./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8259c4061eb15e4ed63bc06f98acbb6dc3f9862bbe262b5cabdd3ad4658d3239 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 22:48:37,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 22:48:37,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 22:48:37,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 22:48:37,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 22:48:37,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 22:48:37,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 22:48:37,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 22:48:37,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 22:48:37,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 22:48:37,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 22:48:37,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 22:48:37,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 22:48:37,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 22:48:37,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 22:48:37,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 22:48:37,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 22:48:37,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 22:48:37,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 22:48:37,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 22:48:37,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 22:48:37,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 22:48:37,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 22:48:37,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 22:48:37,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 22:48:37,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 22:48:37,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 22:48:37,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 22:48:37,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 22:48:37,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 22:48:37,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 22:48:37,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 22:48:37,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 22:48:37,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 22:48:37,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 22:48:37,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 22:48:37,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 22:48:37,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 22:48:37,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 22:48:37,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 22:48:37,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 22:48:37,821 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/config/svcomp-DataRace-32bit-Taipan_Default.epf [2021-11-20 22:48:37,874 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 22:48:37,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 22:48:37,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 22:48:37,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 22:48:37,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 22:48:37,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 22:48:37,876 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 22:48:37,877 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 22:48:37,877 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 22:48:37,877 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 22:48:37,878 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 22:48:37,879 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 22:48:37,879 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 22:48:37,879 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 22:48:37,879 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 22:48:37,880 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 22:48:37,880 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 22:48:37,880 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 22:48:37,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 22:48:37,881 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 22:48:37,881 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 22:48:37,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 22:48:37,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 22:48:37,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 22:48:37,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 22:48:37,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 22:48:37,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 22:48:37,884 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2021-11-20 22:48:37,885 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 22:48:37,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 22:48:37,885 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 22:48:37,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 22:48:37,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 22:48:37,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 22:48:37,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:48:37,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 22:48:37,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 22:48:37,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 22:48:37,887 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 22:48:37,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 22:48:37,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 22:48:37,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 22:48:37,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 22:48:37,888 INFO L138 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_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8259c4061eb15e4ed63bc06f98acbb6dc3f9862bbe262b5cabdd3ad4658d3239 [2021-11-20 22:48:38,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 22:48:38,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 22:48:38,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 22:48:38,155 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 22:48:38,156 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 22:48:38,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i [2021-11-20 22:48:38,216 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/data/e13f32126/d3a7c09cfbbc422e9a8cccd8d783c06d/FLAG677451cff [2021-11-20 22:48:38,766 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 22:48:38,767 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i [2021-11-20 22:48:38,801 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/data/e13f32126/d3a7c09cfbbc422e9a8cccd8d783c06d/FLAG677451cff [2021-11-20 22:48:39,063 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/data/e13f32126/d3a7c09cfbbc422e9a8cccd8d783c06d [2021-11-20 22:48:39,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 22:48:39,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 22:48:39,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 22:48:39,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 22:48:39,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 22:48:39,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:48:39" (1/1) ... [2021-11-20 22:48:39,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30db1ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:39, skipping insertion in model container [2021-11-20 22:48:39,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:48:39" (1/1) ... [2021-11-20 22:48:39,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 22:48:39,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 22:48:39,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:48:39,727 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 22:48:39,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:48:39,872 INFO L208 MainTranslator]: Completed translation [2021-11-20 22:48:39,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:39 WrapperNode [2021-11-20 22:48:39,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 22:48:39,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 22:48:39,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 22:48:39,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 22:48:39,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:39" (1/1) ... [2021-11-20 22:48:39,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:39" (1/1) ... [2021-11-20 22:48:39,961 INFO L137 Inliner]: procedures = 262, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 112 [2021-11-20 22:48:39,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 22:48:39,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 22:48:39,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 22:48:39,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 22:48:39,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:39" (1/1) ... [2021-11-20 22:48:39,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:39" (1/1) ... [2021-11-20 22:48:39,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:39" (1/1) ... [2021-11-20 22:48:39,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:39" (1/1) ... [2021-11-20 22:48:40,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:39" (1/1) ... [2021-11-20 22:48:40,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:39" (1/1) ... [2021-11-20 22:48:40,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:39" (1/1) ... [2021-11-20 22:48:40,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 22:48:40,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 22:48:40,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 22:48:40,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 22:48:40,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:39" (1/1) ... [2021-11-20 22:48:40,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:48:40,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:48:40,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 22:48:40,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 22:48:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 22:48:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 22:48:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 22:48:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 22:48:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-20 22:48:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 22:48:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-11-20 22:48:40,112 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-11-20 22:48:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 22:48:40,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 22:48:40,113 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 22:48:40,230 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 22:48:40,232 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 22:48:40,516 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 22:48:40,525 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 22:48:40,525 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 22:48:40,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:48:40 BoogieIcfgContainer [2021-11-20 22:48:40,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 22:48:40,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 22:48:40,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 22:48:40,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 22:48:40,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:48:39" (1/3) ... [2021-11-20 22:48:40,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dce1cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:48:40, skipping insertion in model container [2021-11-20 22:48:40,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:39" (2/3) ... [2021-11-20 22:48:40,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dce1cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:48:40, skipping insertion in model container [2021-11-20 22:48:40,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:48:40" (3/3) ... [2021-11-20 22:48:40,535 INFO L111 eAbstractionObserver]: Analyzing ICFG 06-symbeq_03-funloop_simple.i [2021-11-20 22:48:40,540 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 22:48:40,540 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 22:48:40,540 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-20 22:48:40,541 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 22:48:40,574 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,574 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,574 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,575 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,575 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,575 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,575 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,575 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,576 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,576 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,576 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,576 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,577 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,577 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,577 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,577 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,577 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,578 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,578 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,578 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,578 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,578 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,579 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,579 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,579 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,579 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,580 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,580 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,580 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,580 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,580 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,580 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,580 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,581 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,581 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,581 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,581 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,581 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,581 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,582 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,582 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,582 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,582 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,582 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,583 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,583 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,583 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,583 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,583 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,584 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,584 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,584 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,584 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,584 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,585 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,585 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,585 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,585 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,585 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,586 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,586 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,586 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,586 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,586 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,587 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,587 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,587 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,587 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,588 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,588 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,588 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,588 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,589 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,589 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,589 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,589 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,589 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,590 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,590 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,590 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,591 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,591 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,591 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,591 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,592 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,592 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,592 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,592 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,592 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,593 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,593 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,593 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,593 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,593 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,594 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,594 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,594 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,594 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,594 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,595 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,595 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,595 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,596 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,596 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,596 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,597 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,597 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,598 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,598 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,598 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,598 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,598 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,599 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,599 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,599 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,599 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,599 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,600 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,600 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,600 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,600 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,601 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,601 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,601 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,601 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,602 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,602 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,602 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,602 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,603 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,603 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,603 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,604 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,604 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,604 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,604 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,604 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,605 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,605 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,605 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,605 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,606 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,606 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,606 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,606 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,607 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,607 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,607 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,607 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,607 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,608 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,608 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,611 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,611 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,612 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,612 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,612 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,612 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,612 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,613 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,613 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,613 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,613 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,613 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,614 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,614 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:48:40,616 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-20 22:48:40,663 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 22:48:40,669 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 22:48:40,670 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-20 22:48:40,704 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-20 22:48:40,718 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 125 transitions, 255 flow [2021-11-20 22:48:40,728 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 125 transitions, 255 flow [2021-11-20 22:48:40,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 125 transitions, 255 flow [2021-11-20 22:48:40,831 INFO L129 PetriNetUnfolder]: 6/124 cut-off events. [2021-11-20 22:48:40,831 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-20 22:48:40,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 124 events. 6/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 218 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2021-11-20 22:48:40,849 INFO L116 LiptonReduction]: Number of co-enabled transitions 4636 [2021-11-20 22:48:43,101 INFO L131 LiptonReduction]: Checked pairs total: 13464 [2021-11-20 22:48:43,101 INFO L133 LiptonReduction]: Total number of compositions: 74 [2021-11-20 22:48:43,110 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 54 transitions, 113 flow [2021-11-20 22:48:43,150 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 560 states, 546 states have (on average 2.0476190476190474) internal successors, (1118), 559 states have internal predecessors, (1118), 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) [2021-11-20 22:48:43,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 560 states, 546 states have (on average 2.0476190476190474) internal successors, (1118), 559 states have internal predecessors, (1118), 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) [2021-11-20 22:48:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 22:48:43,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:48:43,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:48:43,162 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:48:43,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:48:43,167 INFO L85 PathProgramCache]: Analyzing trace with hash 708503634, now seen corresponding path program 1 times [2021-11-20 22:48:43,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:48:43,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200125619] [2021-11-20 22:48:43,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:43,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:48:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:48:43,391 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:48:43,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200125619] [2021-11-20 22:48:43,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200125619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:48:43,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:48:43,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 22:48:43,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381721747] [2021-11-20 22:48:43,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:48:43,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:48:43,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:48:43,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:48:43,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:48:43,419 INFO L87 Difference]: Start difference. First operand has 560 states, 546 states have (on average 2.0476190476190474) internal successors, (1118), 559 states have internal predecessors, (1118), 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 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-20 22:48:43,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:48:43,508 INFO L93 Difference]: Finished difference Result 561 states and 1119 transitions. [2021-11-20 22:48:43,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:48:43,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-20 22:48:43,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:48:43,535 INFO L225 Difference]: With dead ends: 561 [2021-11-20 22:48:43,538 INFO L226 Difference]: Without dead ends: 561 [2021-11-20 22:48:43,539 INFO L932 BasicCegarLoop]: 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 [2021-11-20 22:48:43,543 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 22:48:43,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 22:48:43,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-11-20 22:48:43,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2021-11-20 22:48:43,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 547 states have (on average 2.045703839122486) internal successors, (1119), 560 states have internal predecessors, (1119), 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) [2021-11-20 22:48:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 1119 transitions. [2021-11-20 22:48:43,629 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 1119 transitions. Word has length 10 [2021-11-20 22:48:43,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:48:43,630 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 1119 transitions. [2021-11-20 22:48:43,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-20 22:48:43,630 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 1119 transitions. [2021-11-20 22:48:43,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 22:48:43,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:48:43,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:48:43,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 22:48:43,632 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:48:43,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:48:43,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1212709316, now seen corresponding path program 1 times [2021-11-20 22:48:43,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:48:43,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162877551] [2021-11-20 22:48:43,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:43,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:48:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:43,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:48:43,683 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:48:43,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162877551] [2021-11-20 22:48:43,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162877551] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:48:43,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791276450] [2021-11-20 22:48:43,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:43,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:48:43,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:48:43,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:48:43,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 22:48:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:43,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 22:48:43,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:48:43,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 22:48:43,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 22:48:43,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791276450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:48:43,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 22:48:43,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-11-20 22:48:43,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311725259] [2021-11-20 22:48:43,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:48:43,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:48:43,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:48:43,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:48:43,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:48:43,809 INFO L87 Difference]: Start difference. First operand 561 states and 1119 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-11-20 22:48:43,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:48:43,897 INFO L93 Difference]: Finished difference Result 849 states and 1695 transitions. [2021-11-20 22:48:43,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:48:43,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-11-20 22:48:43,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:48:43,905 INFO L225 Difference]: With dead ends: 849 [2021-11-20 22:48:43,906 INFO L226 Difference]: Without dead ends: 849 [2021-11-20 22:48:43,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:48:43,907 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 33 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:48:43,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 70 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:48:43,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-11-20 22:48:43,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 579. [2021-11-20 22:48:43,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 565 states have (on average 2.0442477876106193) internal successors, (1155), 578 states have internal predecessors, (1155), 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) [2021-11-20 22:48:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 1155 transitions. [2021-11-20 22:48:43,982 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 1155 transitions. Word has length 11 [2021-11-20 22:48:43,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:48:43,982 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 1155 transitions. [2021-11-20 22:48:43,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-11-20 22:48:43,983 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 1155 transitions. [2021-11-20 22:48:43,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 22:48:43,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:48:43,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:48:44,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 22:48:44,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:48:44,209 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:48:44,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:48:44,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1012489544, now seen corresponding path program 1 times [2021-11-20 22:48:44,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:48:44,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441902081] [2021-11-20 22:48:44,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:44,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:48:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:48:44,282 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:48:44,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441902081] [2021-11-20 22:48:44,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441902081] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:48:44,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392506658] [2021-11-20 22:48:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:44,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:48:44,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:48:44,298 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:48:44,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 22:48:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:44,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 22:48:44,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:48:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:48:44,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:48:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:48:44,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392506658] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:48:44,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1159772883] [2021-11-20 22:48:44,519 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-11-20 22:48:44,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:48:44,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-20 22:48:44,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270100617] [2021-11-20 22:48:44,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:48:44,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:48:44,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:48:44,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:48:44,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:48:44,529 INFO L87 Difference]: Start difference. First operand 579 states and 1155 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-20 22:48:44,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:48:44,612 INFO L93 Difference]: Finished difference Result 582 states and 1158 transitions. [2021-11-20 22:48:44,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:48:44,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 12 [2021-11-20 22:48:44,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:48:44,619 INFO L225 Difference]: With dead ends: 582 [2021-11-20 22:48:44,619 INFO L226 Difference]: Without dead ends: 582 [2021-11-20 22:48:44,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:48:44,628 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:48:44,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:48:44,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-11-20 22:48:44,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2021-11-20 22:48:44,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 568 states have (on average 2.038732394366197) internal successors, (1158), 581 states have internal predecessors, (1158), 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) [2021-11-20 22:48:44,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1158 transitions. [2021-11-20 22:48:44,693 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1158 transitions. Word has length 12 [2021-11-20 22:48:44,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:48:44,693 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 1158 transitions. [2021-11-20 22:48:44,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-20 22:48:44,694 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1158 transitions. [2021-11-20 22:48:44,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 22:48:44,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:48:44,698 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:48:44,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 22:48:44,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:48:44,914 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:48:44,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:48:44,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1991926642, now seen corresponding path program 2 times [2021-11-20 22:48:44,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:48:44,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90367551] [2021-11-20 22:48:44,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:44,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:48:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:48:44,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:48:44,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90367551] [2021-11-20 22:48:44,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90367551] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:48:44,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940715195] [2021-11-20 22:48:44,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 22:48:44,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:48:44,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:48:44,998 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:48:45,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 22:48:45,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-20 22:48:45,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 22:48:45,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 22:48:45,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:48:45,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 22:48:45,127 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 22:48:45,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 22:48:45,166 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-11-20 22:48:45,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 22:48:45,224 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-11-20 22:48:45,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2021-11-20 22:48:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-20 22:48:45,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 22:48:45,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940715195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:48:45,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 22:48:45,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2021-11-20 22:48:45,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171781246] [2021-11-20 22:48:45,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:48:45,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:48:45,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:48:45,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:48:45,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-20 22:48:45,255 INFO L87 Difference]: Start difference. First operand 582 states and 1158 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2021-11-20 22:48:45,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:48:45,567 INFO L93 Difference]: Finished difference Result 683 states and 1360 transitions. [2021-11-20 22:48:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:48:45,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 15 [2021-11-20 22:48:45,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:48:45,573 INFO L225 Difference]: With dead ends: 683 [2021-11-20 22:48:45,573 INFO L226 Difference]: Without dead ends: 683 [2021-11-20 22:48:45,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-20 22:48:45,574 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 46 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 22:48:45,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 26 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 22:48:45,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-11-20 22:48:45,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 649. [2021-11-20 22:48:45,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 635 states have (on average 2.0346456692913386) internal successors, (1292), 648 states have internal predecessors, (1292), 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) [2021-11-20 22:48:45,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1292 transitions. [2021-11-20 22:48:45,602 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1292 transitions. Word has length 15 [2021-11-20 22:48:45,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:48:45,603 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 1292 transitions. [2021-11-20 22:48:45,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2021-11-20 22:48:45,603 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1292 transitions. [2021-11-20 22:48:45,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 22:48:45,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:48:45,607 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:48:45,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 22:48:45,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:48:45,823 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:48:45,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:48:45,824 INFO L85 PathProgramCache]: Analyzing trace with hash -298502129, now seen corresponding path program 1 times [2021-11-20 22:48:45,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:48:45,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610879752] [2021-11-20 22:48:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:45,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:48:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:48:45,935 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:48:45,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610879752] [2021-11-20 22:48:45,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610879752] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:48:45,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423560720] [2021-11-20 22:48:45,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:45,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:48:45,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:48:45,937 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:48:45,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 22:48:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:46,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 22:48:46,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:48:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:48:46,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:48:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:48:46,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423560720] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:48:46,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1685967480] [2021-11-20 22:48:46,120 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-11-20 22:48:46,121 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:48:46,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-11-20 22:48:46,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888689642] [2021-11-20 22:48:46,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:48:46,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 22:48:46,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:48:46,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 22:48:46,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-20 22:48:46,123 INFO L87 Difference]: Start difference. First operand 649 states and 1292 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 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) [2021-11-20 22:48:46,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:48:46,181 INFO L93 Difference]: Finished difference Result 655 states and 1298 transitions. [2021-11-20 22:48:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 22:48:46,181 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 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 15 [2021-11-20 22:48:46,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:48:46,186 INFO L225 Difference]: With dead ends: 655 [2021-11-20 22:48:46,186 INFO L226 Difference]: Without dead ends: 655 [2021-11-20 22:48:46,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-20 22:48:46,188 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 22:48:46,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 22:48:46,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2021-11-20 22:48:46,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2021-11-20 22:48:46,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 641 states have (on average 2.0249609984399375) internal successors, (1298), 654 states have internal predecessors, (1298), 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) [2021-11-20 22:48:46,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1298 transitions. [2021-11-20 22:48:46,211 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1298 transitions. Word has length 15 [2021-11-20 22:48:46,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:48:46,212 INFO L470 AbstractCegarLoop]: Abstraction has 655 states and 1298 transitions. [2021-11-20 22:48:46,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 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) [2021-11-20 22:48:46,212 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1298 transitions. [2021-11-20 22:48:46,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 22:48:46,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:48:46,213 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:48:46,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 22:48:46,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:48:46,435 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:48:46,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:48:46,436 INFO L85 PathProgramCache]: Analyzing trace with hash -808728497, now seen corresponding path program 2 times [2021-11-20 22:48:46,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:48:46,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383449835] [2021-11-20 22:48:46,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:46,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:48:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:46,613 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:48:46,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:48:46,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383449835] [2021-11-20 22:48:46,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383449835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:48:46,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:48:46,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 22:48:46,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013708811] [2021-11-20 22:48:46,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:48:46,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:48:46,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:48:46,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:48:46,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:48:46,617 INFO L87 Difference]: Start difference. First operand 655 states and 1298 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2021-11-20 22:48:46,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:48:46,974 INFO L93 Difference]: Finished difference Result 822 states and 1632 transitions. [2021-11-20 22:48:46,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:48:46,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 [2021-11-20 22:48:46,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:48:46,980 INFO L225 Difference]: With dead ends: 822 [2021-11-20 22:48:46,980 INFO L226 Difference]: Without dead ends: 822 [2021-11-20 22:48:46,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:48:46,981 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 68 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 22:48:46,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 26 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 22:48:46,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-11-20 22:48:47,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 764. [2021-11-20 22:48:47,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 751 states have (on average 2.018641810918775) internal successors, (1516), 763 states have internal predecessors, (1516), 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) [2021-11-20 22:48:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1516 transitions. [2021-11-20 22:48:47,009 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1516 transitions. Word has length 21 [2021-11-20 22:48:47,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:48:47,009 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 1516 transitions. [2021-11-20 22:48:47,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2021-11-20 22:48:47,010 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1516 transitions. [2021-11-20 22:48:47,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 22:48:47,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:48:47,011 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:48:47,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 22:48:47,011 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:48:47,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:48:47,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1420397870, now seen corresponding path program 1 times [2021-11-20 22:48:47,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:48:47,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688873599] [2021-11-20 22:48:47,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:47,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:48:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:48:47,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:48:47,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688873599] [2021-11-20 22:48:47,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688873599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:48:47,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:48:47,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 22:48:47,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63336468] [2021-11-20 22:48:47,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:48:47,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:48:47,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:48:47,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:48:47,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:48:47,120 INFO L87 Difference]: Start difference. First operand 764 states and 1516 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-20 22:48:47,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:48:47,432 INFO L93 Difference]: Finished difference Result 850 states and 1688 transitions. [2021-11-20 22:48:47,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:48:47,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 [2021-11-20 22:48:47,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:48:47,439 INFO L225 Difference]: With dead ends: 850 [2021-11-20 22:48:47,439 INFO L226 Difference]: Without dead ends: 850 [2021-11-20 22:48:47,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:48:47,440 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 42 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 22:48:47,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 26 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 22:48:47,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2021-11-20 22:48:47,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 830. [2021-11-20 22:48:47,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 817 states have (on average 2.0171358629130967) internal successors, (1648), 829 states have internal predecessors, (1648), 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) [2021-11-20 22:48:47,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1648 transitions. [2021-11-20 22:48:47,467 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1648 transitions. Word has length 27 [2021-11-20 22:48:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:48:47,468 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 1648 transitions. [2021-11-20 22:48:47,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-20 22:48:47,468 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1648 transitions. [2021-11-20 22:48:47,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 22:48:47,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:48:47,469 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:48:47,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 22:48:47,470 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:48:47,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:48:47,470 INFO L85 PathProgramCache]: Analyzing trace with hash 755035473, now seen corresponding path program 1 times [2021-11-20 22:48:47,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:48:47,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900942060] [2021-11-20 22:48:47,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:47,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:48:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:48:47,622 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:48:47,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900942060] [2021-11-20 22:48:47,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900942060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:48:47,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:48:47,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 22:48:47,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198212823] [2021-11-20 22:48:47,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:48:47,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:48:47,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:48:47,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:48:47,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:48:47,625 INFO L87 Difference]: Start difference. First operand 830 states and 1648 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-20 22:48:48,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:48:48,071 INFO L93 Difference]: Finished difference Result 982 states and 1952 transitions. [2021-11-20 22:48:48,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:48:48,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 [2021-11-20 22:48:48,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:48:48,079 INFO L225 Difference]: With dead ends: 982 [2021-11-20 22:48:48,079 INFO L226 Difference]: Without dead ends: 966 [2021-11-20 22:48:48,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:48:48,081 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 62 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 22:48:48,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 27 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 22:48:48,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-11-20 22:48:48,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 931. [2021-11-20 22:48:48,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 918 states have (on average 2.0130718954248366) internal successors, (1848), 930 states have internal predecessors, (1848), 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) [2021-11-20 22:48:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1848 transitions. [2021-11-20 22:48:48,113 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1848 transitions. Word has length 27 [2021-11-20 22:48:48,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:48:48,114 INFO L470 AbstractCegarLoop]: Abstraction has 931 states and 1848 transitions. [2021-11-20 22:48:48,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-20 22:48:48,114 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1848 transitions. [2021-11-20 22:48:48,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 22:48:48,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:48:48,115 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:48:48,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 22:48:48,116 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:48:48,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:48:48,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1529919405, now seen corresponding path program 1 times [2021-11-20 22:48:48,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:48:48,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198355972] [2021-11-20 22:48:48,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:48,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:48:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-20 22:48:48,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:48:48,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198355972] [2021-11-20 22:48:48,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198355972] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:48:48,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186054035] [2021-11-20 22:48:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:48,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:48:48,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:48:48,451 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:48:48,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 22:48:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:48,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 22:48:48,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:48:48,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-11-20 22:48:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:48:48,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 22:48:48,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186054035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:48:48,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 22:48:48,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2021-11-20 22:48:48,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709564767] [2021-11-20 22:48:48,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:48:48,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:48:48,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:48:48,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:48:48,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-20 22:48:48,771 INFO L87 Difference]: Start difference. First operand 931 states and 1848 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-11-20 22:48:48,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:48:48,915 INFO L93 Difference]: Finished difference Result 1799 states and 3558 transitions. [2021-11-20 22:48:48,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 22:48:48,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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 31 [2021-11-20 22:48:48,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:48:48,933 INFO L225 Difference]: With dead ends: 1799 [2021-11-20 22:48:48,933 INFO L226 Difference]: Without dead ends: 1799 [2021-11-20 22:48:48,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-20 22:48:48,935 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 158 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:48:48,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 122 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:48:48,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2021-11-20 22:48:48,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 971. [2021-11-20 22:48:48,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 958 states have (on average 1.9853862212943632) internal successors, (1902), 970 states have internal predecessors, (1902), 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) [2021-11-20 22:48:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1902 transitions. [2021-11-20 22:48:48,991 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1902 transitions. Word has length 31 [2021-11-20 22:48:48,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:48:48,992 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 1902 transitions. [2021-11-20 22:48:48,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-11-20 22:48:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1902 transitions. [2021-11-20 22:48:48,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 22:48:48,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:48:48,996 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:48:49,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 22:48:49,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:48:49,219 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:48:49,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:48:49,220 INFO L85 PathProgramCache]: Analyzing trace with hash -496452185, now seen corresponding path program 2 times [2021-11-20 22:48:49,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:48:49,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218137215] [2021-11-20 22:48:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:49,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:48:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:49,478 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-20 22:48:49,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:48:49,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218137215] [2021-11-20 22:48:49,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218137215] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:48:49,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138191356] [2021-11-20 22:48:49,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 22:48:49,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:48:49,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:48:49,480 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:48:49,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 22:48:49,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-20 22:48:49,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 22:48:49,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 22:48:49,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:48:49,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-11-20 22:48:49,779 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:48:49,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 22:48:49,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138191356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:48:49,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 22:48:49,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2021-11-20 22:48:49,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719805428] [2021-11-20 22:48:49,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:48:49,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:48:49,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:48:49,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:48:49,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-20 22:48:49,784 INFO L87 Difference]: Start difference. First operand 971 states and 1902 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-11-20 22:48:50,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:48:50,002 INFO L93 Difference]: Finished difference Result 2404 states and 4741 transitions. [2021-11-20 22:48:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:48:50,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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 31 [2021-11-20 22:48:50,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:48:50,018 INFO L225 Difference]: With dead ends: 2404 [2021-11-20 22:48:50,019 INFO L226 Difference]: Without dead ends: 2404 [2021-11-20 22:48:50,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-20 22:48:50,020 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 156 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 22:48:50,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 138 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 22:48:50,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2021-11-20 22:48:50,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 1013. [2021-11-20 22:48:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1000 states have (on average 1.986) internal successors, (1986), 1012 states have internal predecessors, (1986), 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) [2021-11-20 22:48:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1986 transitions. [2021-11-20 22:48:50,068 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1986 transitions. Word has length 31 [2021-11-20 22:48:50,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:48:50,069 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1986 transitions. [2021-11-20 22:48:50,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-11-20 22:48:50,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1986 transitions. [2021-11-20 22:48:50,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 22:48:50,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:48:50,071 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:48:50,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 22:48:50,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 22:48:50,287 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:48:50,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:48:50,288 INFO L85 PathProgramCache]: Analyzing trace with hash -820462645, now seen corresponding path program 3 times [2021-11-20 22:48:50,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:48:50,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162256220] [2021-11-20 22:48:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:50,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:48:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-20 22:48:50,517 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:48:50,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162256220] [2021-11-20 22:48:50,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162256220] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:48:50,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299496177] [2021-11-20 22:48:50,517 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 22:48:50,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:48:50,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:48:50,518 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:48:50,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 22:48:50,663 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 22:48:50,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 22:48:50,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 22:48:50,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:48:50,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-11-20 22:48:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:48:50,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 22:48:50,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299496177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:48:50,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 22:48:50,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2021-11-20 22:48:50,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890073593] [2021-11-20 22:48:50,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:48:50,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:48:50,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:48:50,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:48:50,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-20 22:48:50,989 INFO L87 Difference]: Start difference. First operand 1013 states and 1986 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-11-20 22:48:51,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:48:51,166 INFO L93 Difference]: Finished difference Result 1787 states and 3493 transitions. [2021-11-20 22:48:51,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:48:51,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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 31 [2021-11-20 22:48:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:48:51,178 INFO L225 Difference]: With dead ends: 1787 [2021-11-20 22:48:51,178 INFO L226 Difference]: Without dead ends: 1787 [2021-11-20 22:48:51,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-20 22:48:51,179 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 150 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:48:51,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 142 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:48:51,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2021-11-20 22:48:51,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1012. [2021-11-20 22:48:51,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 999 states have (on average 1.985985985985986) internal successors, (1984), 1011 states have internal predecessors, (1984), 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) [2021-11-20 22:48:51,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1984 transitions. [2021-11-20 22:48:51,218 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1984 transitions. Word has length 31 [2021-11-20 22:48:51,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:48:51,219 INFO L470 AbstractCegarLoop]: Abstraction has 1012 states and 1984 transitions. [2021-11-20 22:48:51,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-11-20 22:48:51,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1984 transitions. [2021-11-20 22:48:51,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 22:48:51,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:48:51,220 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:48:51,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 22:48:51,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:48:51,441 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:48:51,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:48:51,441 INFO L85 PathProgramCache]: Analyzing trace with hash 579202072, now seen corresponding path program 1 times [2021-11-20 22:48:51,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:48:51,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858895411] [2021-11-20 22:48:51,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:51,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:48:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:48:51,477 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:48:51,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858895411] [2021-11-20 22:48:51,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858895411] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:48:51,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617954765] [2021-11-20 22:48:51,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:51,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:48:51,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:48:51,480 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:48:51,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 22:48:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:51,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 22:48:51,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:48:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:48:51,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:48:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:48:51,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617954765] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:48:51,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2103639390] [2021-11-20 22:48:51,719 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-11-20 22:48:51,720 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:48:51,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-20 22:48:51,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288554158] [2021-11-20 22:48:51,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:48:51,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 22:48:51,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:48:51,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 22:48:51,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-20 22:48:51,723 INFO L87 Difference]: Start difference. First operand 1012 states and 1984 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2021-11-20 22:48:51,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:48:51,860 INFO L93 Difference]: Finished difference Result 2592 states and 5144 transitions. [2021-11-20 22:48:51,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:48:51,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 34 [2021-11-20 22:48:51,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:48:51,877 INFO L225 Difference]: With dead ends: 2592 [2021-11-20 22:48:51,877 INFO L226 Difference]: Without dead ends: 2592 [2021-11-20 22:48:51,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-20 22:48:51,879 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 172 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:48:51,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 154 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:48:51,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2021-11-20 22:48:51,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 2457. [2021-11-20 22:48:51,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2457 states, 2444 states have (on average 2.049509001636661) internal successors, (5009), 2456 states have internal predecessors, (5009), 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) [2021-11-20 22:48:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 5009 transitions. [2021-11-20 22:48:51,966 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 5009 transitions. Word has length 34 [2021-11-20 22:48:51,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:48:51,966 INFO L470 AbstractCegarLoop]: Abstraction has 2457 states and 5009 transitions. [2021-11-20 22:48:51,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2021-11-20 22:48:51,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 5009 transitions. [2021-11-20 22:48:51,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 22:48:51,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:48:51,969 INFO L514 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:48:52,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 22:48:52,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:48:52,193 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:48:52,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:48:52,193 INFO L85 PathProgramCache]: Analyzing trace with hash -39408191, now seen corresponding path program 1 times [2021-11-20 22:48:52,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:48:52,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853160997] [2021-11-20 22:48:52,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:52,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:48:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:48:52,529 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:48:52,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853160997] [2021-11-20 22:48:52,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853160997] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:48:52,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348853688] [2021-11-20 22:48:52,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:48:52,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:48:52,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:48:52,530 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:48:52,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 22:48:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:48:52,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 22:48:52,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:48:53,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 22:48:53,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:48:53,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-20 22:48:53,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:48:53,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:48:53,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:48:53,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 22:48:53,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:48:53,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:48:53,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:48:53,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:48:53,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:48:53,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:48:53,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-20 22:48:53,498 INFO L354 Elim1Store]: treesize reduction 204, result has 14.6 percent of original size [2021-11-20 22:48:53,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 70 [2021-11-20 22:48:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:48:53,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:49:00,060 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_269| Int)) (or (let ((.cse1 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3))) (let ((.cse0 (select (let ((.cse2 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse1 |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|)))) (store .cse2 |c_~#cache~0.base| (store (select .cse2 |c_~#cache~0.base|) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_269| 0))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (and (= (select .cse0 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2)) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|) (= |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| (select .cse0 .cse1)) (= (select .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|) (= (select .cse0 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1)) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|)))) (< (+ |c_~#cache~0.offset| (* 28 |c_ULTIMATE.start_main_~i~2#1|)) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_269|))) is different from false [2021-11-20 22:49:22,818 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2021-11-20 22:49:22,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348853688] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:49:22,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1453496361] [2021-11-20 22:49:22,820 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-11-20 22:49:22,821 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:49:22,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2021-11-20 22:49:22,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863219575] [2021-11-20 22:49:22,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:49:22,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-20 22:49:22,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:49:22,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-20 22:49:22,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=758, Unknown=12, NotChecked=58, Total=992 [2021-11-20 22:49:22,824 INFO L87 Difference]: Start difference. First operand 2457 states and 5009 transitions. Second operand has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 states have internal predecessors, (103), 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) [2021-11-20 22:49:24,623 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (let ((.cse2 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1)) (.cse1 (store .cse0 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|)) (.cse3 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2))) (and (<= |c_ULTIMATE.start_main_~i~2#1| 0) (= (select .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|) (= |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| (select .cse1 .cse2)) (= |c_~#cache~0.base| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (<= (+ |c_~#cache~0.offset| 28) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) (= |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| (select .cse1 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|)) (= |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| (select .cse0 .cse3)) (forall ((|v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_269| Int)) (or (let ((.cse5 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3))) (let ((.cse4 (select (let ((.cse6 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse5 |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|)))) (store .cse6 |c_~#cache~0.base| (store (select .cse6 |c_~#cache~0.base|) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_269| 0))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (and (= (select .cse4 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2)) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|) (= |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| (select .cse4 .cse5)) (= (select .cse4 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|) (= (select .cse4 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1)) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|)))) (< (+ |c_~#cache~0.offset| (* 28 |c_ULTIMATE.start_main_~i~2#1|)) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_269|))) (= (select .cse0 .cse2) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|) (= |c_ULTIMATE.start_main_~i~2#1| 0) (<= 1 (div (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (* |c_~#cache~0.offset| (- 1))) 28)) (<= 1 |c_t_funThread1of1ForFork0_~i~0#1|) (= (select .cse1 .cse3) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|) (= |c_~#cache~0.base| 1)))) is different from false [2021-11-20 22:49:35,627 WARN L227 SmtUtils]: Spent 6.34s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 22:49:57,988 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 22:50:26,678 WARN L227 SmtUtils]: Spent 6.90s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 22:50:54,222 WARN L227 SmtUtils]: Spent 7.59s on a formula simplification that was a NOOP. DAG size: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 22:51:10,335 WARN L227 SmtUtils]: Spent 14.21s on a formula simplification. DAG size of input: 66 DAG size of output: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 22:51:25,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:25,803 INFO L93 Difference]: Finished difference Result 9713 states and 19712 transitions. [2021-11-20 22:51:25,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-20 22:51:25,803 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 states have internal predecessors, (103), 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 45 [2021-11-20 22:51:25,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:25,899 INFO L225 Difference]: With dead ends: 9713 [2021-11-20 22:51:25,899 INFO L226 Difference]: Without dead ends: 9713 [2021-11-20 22:51:25,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 78 SyntacticMatches, 8 SemanticMatches, 75 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1831 ImplicationChecksByTransitivity, 149.6s TimeCoverageRelationStatistics Valid=958, Invalid=4555, Unknown=45, NotChecked=294, Total=5852 [2021-11-20 22:51:25,902 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 762 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 2062 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 4630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2433 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:25,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [762 Valid, 456 Invalid, 4630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2062 Invalid, 0 Unknown, 2433 Unchecked, 2.2s Time] [2021-11-20 22:51:25,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9713 states. [2021-11-20 22:51:26,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9713 to 4954. [2021-11-20 22:51:26,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4954 states, 4941 states have (on average 2.1497672535923904) internal successors, (10622), 4953 states have internal predecessors, (10622), 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) [2021-11-20 22:51:26,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4954 states to 4954 states and 10622 transitions. [2021-11-20 22:51:26,135 INFO L78 Accepts]: Start accepts. Automaton has 4954 states and 10622 transitions. Word has length 45 [2021-11-20 22:51:26,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:26,137 INFO L470 AbstractCegarLoop]: Abstraction has 4954 states and 10622 transitions. [2021-11-20 22:51:26,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 states have internal predecessors, (103), 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) [2021-11-20 22:51:26,137 INFO L276 IsEmpty]: Start isEmpty. Operand 4954 states and 10622 transitions. [2021-11-20 22:51:26,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 22:51:26,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:26,140 INFO L514 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:26,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 22:51:26,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 22:51:26,360 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:51:26,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:26,361 INFO L85 PathProgramCache]: Analyzing trace with hash 28515289, now seen corresponding path program 2 times [2021-11-20 22:51:26,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:26,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689109227] [2021-11-20 22:51:26,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:26,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:26,767 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:51:26,767 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:26,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689109227] [2021-11-20 22:51:26,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689109227] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:51:26,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711751500] [2021-11-20 22:51:26,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 22:51:26,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:51:26,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:51:26,768 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:51:26,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 22:51:26,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-20 22:51:26,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 22:51:26,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-20 22:51:26,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:51:27,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-11-20 22:51:27,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 22:51:27,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:27,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-20 22:51:27,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:27,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:27,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:27,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 22:51:27,469 INFO L354 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2021-11-20 22:51:27,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 11 [2021-11-20 22:51:27,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:27,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:27,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:27,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:27,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:27,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:27,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-20 22:51:27,704 INFO L354 Elim1Store]: treesize reduction 148, result has 19.1 percent of original size [2021-11-20 22:51:27,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 67 [2021-11-20 22:51:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-20 22:51:27,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:51:28,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:28,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:28,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:28,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:28,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:28,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:28,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:28,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:28,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:28,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 59 [2021-11-20 22:51:28,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 64 treesize of output 57 [2021-11-20 22:51:28,856 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-20 22:51:28,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711751500] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 22:51:28,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 22:51:28,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 9] total 26 [2021-11-20 22:51:28,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585071237] [2021-11-20 22:51:28,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:28,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 22:51:28,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:28,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 22:51:28,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2021-11-20 22:51:28,860 INFO L87 Difference]: Start difference. First operand 4954 states and 10622 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-11-20 22:51:33,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:33,190 INFO L93 Difference]: Finished difference Result 6278 states and 13350 transitions. [2021-11-20 22:51:33,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 22:51:33,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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 45 [2021-11-20 22:51:33,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:33,212 INFO L225 Difference]: With dead ends: 6278 [2021-11-20 22:51:33,212 INFO L226 Difference]: Without dead ends: 6278 [2021-11-20 22:51:33,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 22:51:33,213 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 110 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:33,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 29 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-20 22:51:33,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6278 states. [2021-11-20 22:51:33,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6278 to 5079. [2021-11-20 22:51:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5079 states, 5066 states have (on average 2.1504145282273983) internal successors, (10894), 5078 states have internal predecessors, (10894), 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) [2021-11-20 22:51:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5079 states to 5079 states and 10894 transitions. [2021-11-20 22:51:33,395 INFO L78 Accepts]: Start accepts. Automaton has 5079 states and 10894 transitions. Word has length 45 [2021-11-20 22:51:33,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:33,395 INFO L470 AbstractCegarLoop]: Abstraction has 5079 states and 10894 transitions. [2021-11-20 22:51:33,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-11-20 22:51:33,395 INFO L276 IsEmpty]: Start isEmpty. Operand 5079 states and 10894 transitions. [2021-11-20 22:51:33,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 22:51:33,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:33,398 INFO L514 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:33,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 22:51:33,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-20 22:51:33,616 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:51:33,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:33,617 INFO L85 PathProgramCache]: Analyzing trace with hash 29222089, now seen corresponding path program 3 times [2021-11-20 22:51:33,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:33,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908713519] [2021-11-20 22:51:33,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:33,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:51:33,967 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:33,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908713519] [2021-11-20 22:51:33,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908713519] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:51:33,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066629281] [2021-11-20 22:51:33,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 22:51:33,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:51:33,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:51:33,968 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:51:33,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 22:51:34,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 22:51:34,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 22:51:34,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-20 22:51:34,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:51:34,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 22:51:34,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:34,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-20 22:51:34,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:34,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:34,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:34,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 22:51:35,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:35,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:35,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:35,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:35,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:35,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:35,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-20 22:51:35,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:35,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:35,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:35,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:35,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:35,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:35,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:35,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:35,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:35,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:35,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-20 22:51:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:51:35,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:51:35,565 INFO L354 Elim1Store]: treesize reduction 222, result has 16.2 percent of original size [2021-11-20 22:51:35,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 case distinctions, treesize of input 62 treesize of output 57 [2021-11-20 22:51:35,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 65 treesize of output 53 [2021-11-20 22:51:35,574 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-20 22:51:35,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 60 treesize of output 42 [2021-11-20 22:51:35,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:35,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:35,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:35,642 INFO L354 Elim1Store]: treesize reduction 107, result has 29.6 percent of original size [2021-11-20 22:51:35,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 59 [2021-11-20 22:51:35,651 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 22:51:35,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 67 treesize of output 59 [2021-11-20 22:51:35,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:35,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:35,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:35,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:35,671 INFO L354 Elim1Store]: treesize reduction 37, result has 9.8 percent of original size [2021-11-20 22:51:35,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 30 [2021-11-20 22:51:35,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:35,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:35,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:35,723 INFO L354 Elim1Store]: treesize reduction 107, result has 29.6 percent of original size [2021-11-20 22:51:35,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 60 treesize of output 57 [2021-11-20 22:51:35,738 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 22:51:35,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 65 treesize of output 57 [2021-11-20 22:51:35,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:35,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:35,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:35,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:51:35,755 INFO L354 Elim1Store]: treesize reduction 37, result has 9.8 percent of original size [2021-11-20 22:51:35,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 28 [2021-11-20 22:51:36,157 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:51:36,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066629281] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:51:36,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [56333532] [2021-11-20 22:51:36,158 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-11-20 22:51:36,158 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:51:36,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2021-11-20 22:51:36,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289206866] [2021-11-20 22:51:36,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:51:36,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-20 22:51:36,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:36,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-20 22:51:36,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2021-11-20 22:51:36,161 INFO L87 Difference]: Start difference. First operand 5079 states and 10894 transitions. Second operand has 31 states, 30 states have (on average 3.4) internal successors, (102), 31 states have internal predecessors, (102), 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) [2021-11-20 22:51:43,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:43,601 INFO L93 Difference]: Finished difference Result 10281 states and 21613 transitions. [2021-11-20 22:51:43,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-20 22:51:43,602 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.4) internal successors, (102), 31 states have internal predecessors, (102), 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 45 [2021-11-20 22:51:43,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:43,629 INFO L225 Difference]: With dead ends: 10281 [2021-11-20 22:51:43,630 INFO L226 Difference]: Without dead ends: 10281 [2021-11-20 22:51:43,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=920, Invalid=3502, Unknown=0, NotChecked=0, Total=4422 [2021-11-20 22:51:43,632 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 575 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 4122 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 4262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 4122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:43,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 458 Invalid, 4262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 4122 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-20 22:51:43,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10281 states. [2021-11-20 22:51:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10281 to 8159. [2021-11-20 22:51:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8159 states, 8146 states have (on average 2.1864718880432115) internal successors, (17811), 8158 states have internal predecessors, (17811), 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) [2021-11-20 22:51:43,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8159 states to 8159 states and 17811 transitions. [2021-11-20 22:51:43,870 INFO L78 Accepts]: Start accepts. Automaton has 8159 states and 17811 transitions. Word has length 45 [2021-11-20 22:51:43,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:43,870 INFO L470 AbstractCegarLoop]: Abstraction has 8159 states and 17811 transitions. [2021-11-20 22:51:43,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.4) internal successors, (102), 31 states have internal predecessors, (102), 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) [2021-11-20 22:51:43,870 INFO L276 IsEmpty]: Start isEmpty. Operand 8159 states and 17811 transitions. [2021-11-20 22:51:43,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 22:51:43,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:43,873 INFO L514 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:43,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 22:51:44,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 22:51:44,099 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:51:44,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:44,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2133118497, now seen corresponding path program 4 times [2021-11-20 22:51:44,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:44,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271656123] [2021-11-20 22:51:44,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:44,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:44,515 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:51:44,515 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:44,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271656123] [2021-11-20 22:51:44,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271656123] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:51:44,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710298332] [2021-11-20 22:51:44,515 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 22:51:44,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:51:44,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:51:44,519 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:51:44,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 22:51:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:44,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 22:51:44,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:51:45,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 22:51:45,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:45,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-20 22:51:45,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:45,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:45,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:45,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 22:51:45,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:45,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:45,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:45,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:45,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:45,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:51:45,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-20 22:51:45,384 INFO L354 Elim1Store]: treesize reduction 204, result has 14.6 percent of original size [2021-11-20 22:51:45,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 70 [2021-11-20 22:51:45,492 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:51:45,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:52:05,862 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_272| Int)) (or (let ((.cse2 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1)) (.cse1 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2)) (.cse3 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3))) (let ((.cse0 (select (let ((.cse4 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse2 |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|) .cse1 |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|) .cse3 |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|)))) (store .cse4 |c_~#cache~0.base| (store (select .cse4 |c_~#cache~0.base|) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_272| 0))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (and (= |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| (select .cse0 .cse1)) (= |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| (select .cse0 .cse2)) (= (select .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|) (= (select .cse0 .cse3) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|)))) (< (+ |c_~#cache~0.offset| (* 28 |c_ULTIMATE.start_main_~i~2#1|)) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_272|))) is different from false [2021-11-20 22:52:08,853 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2021-11-20 22:52:08,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710298332] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:52:08,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [974916391] [2021-11-20 22:52:08,854 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-11-20 22:52:08,855 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:52:08,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2021-11-20 22:52:08,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618578355] [2021-11-20 22:52:08,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:52:08,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-20 22:52:08,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:08,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-20 22:52:08,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=783, Unknown=10, NotChecked=58, Total=992 [2021-11-20 22:52:08,857 INFO L87 Difference]: Start difference. First operand 8159 states and 17811 transitions. Second operand has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 states have internal predecessors, (103), 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) [2021-11-20 22:52:13,399 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (and (forall ((|v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_272| Int)) (or (let ((.cse2 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1)) (.cse1 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2)) (.cse3 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3))) (let ((.cse0 (select (let ((.cse4 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse2 |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|) .cse1 |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|) .cse3 |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|)))) (store .cse4 |c_~#cache~0.base| (store (select .cse4 |c_~#cache~0.base|) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_272| 0))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (and (= |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| (select .cse0 .cse1)) (= |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| (select .cse0 .cse2)) (= (select .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|) (= (select .cse0 .cse3) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|)))) (< (+ |c_~#cache~0.offset| (* 28 |c_ULTIMATE.start_main_~i~2#1|)) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_272|))) (<= |c_ULTIMATE.start_main_~i~2#1| 0) (= (select .cse5 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|) (= |c_~#cache~0.base| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (<= (+ |c_~#cache~0.offset| 28) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) (= |c_ULTIMATE.start_main_~i~2#1| 0) (<= 1 (div (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (* |c_~#cache~0.offset| (- 1))) 28)) (<= 1 |c_t_funThread1of1ForFork0_~i~0#1|) (= (select (store .cse5 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1|) (= |c_~#cache~0.base| 1))) is different from false [2021-11-20 22:52:52,047 WARN L227 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 22:52:56,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:56,701 INFO L93 Difference]: Finished difference Result 21995 states and 47549 transitions. [2021-11-20 22:52:56,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-20 22:52:56,702 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 states have internal predecessors, (103), 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 45 [2021-11-20 22:52:56,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:56,760 INFO L225 Difference]: With dead ends: 21995 [2021-11-20 22:52:56,760 INFO L226 Difference]: Without dead ends: 21995 [2021-11-20 22:52:56,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1265 ImplicationChecksByTransitivity, 67.8s TimeCoverageRelationStatistics Valid=690, Invalid=3583, Unknown=25, NotChecked=258, Total=4556 [2021-11-20 22:52:56,762 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 569 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 3848 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 5662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 3848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1669 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:56,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 518 Invalid, 5662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 3848 Invalid, 0 Unknown, 1669 Unchecked, 3.3s Time] [2021-11-20 22:52:56,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21995 states. [2021-11-20 22:52:57,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21995 to 13734. [2021-11-20 22:52:57,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13734 states, 13721 states have (on average 2.212083667371183) internal successors, (30352), 13733 states have internal predecessors, (30352), 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) [2021-11-20 22:52:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13734 states to 13734 states and 30352 transitions. [2021-11-20 22:52:57,421 INFO L78 Accepts]: Start accepts. Automaton has 13734 states and 30352 transitions. Word has length 45 [2021-11-20 22:52:57,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:57,421 INFO L470 AbstractCegarLoop]: Abstraction has 13734 states and 30352 transitions. [2021-11-20 22:52:57,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 states have internal predecessors, (103), 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) [2021-11-20 22:52:57,422 INFO L276 IsEmpty]: Start isEmpty. Operand 13734 states and 30352 transitions. [2021-11-20 22:52:57,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 22:52:57,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:57,425 INFO L514 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:52:57,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 22:52:57,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:52:57,643 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:52:57,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:57,644 INFO L85 PathProgramCache]: Analyzing trace with hash 434585403, now seen corresponding path program 5 times [2021-11-20 22:52:57,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:57,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196768352] [2021-11-20 22:52:57,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:57,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:58,132 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:52:58,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:58,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196768352] [2021-11-20 22:52:58,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196768352] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:52:58,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588491867] [2021-11-20 22:52:58,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 22:52:58,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:52:58,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:52:58,134 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:52:58,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 22:52:58,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-20 22:52:58,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 22:52:58,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-20 22:52:58,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:52:58,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-11-20 22:52:58,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 22:52:58,556 INFO L354 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2021-11-20 22:52:58,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 11 [2021-11-20 22:52:58,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:58,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-20 22:52:58,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:58,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:58,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:58,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 22:52:58,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:58,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:58,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:58,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:58,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:58,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:58,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-20 22:52:58,922 INFO L354 Elim1Store]: treesize reduction 148, result has 19.1 percent of original size [2021-11-20 22:52:58,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 67 [2021-11-20 22:52:58,984 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-20 22:52:58,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:52:59,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:52:59,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:52:59,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:52:59,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:52:59,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:52:59,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:52:59,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:52:59,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:52:59,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:52:59,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 59 [2021-11-20 22:52:59,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 64 treesize of output 57 [2021-11-20 22:52:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-20 22:52:59,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588491867] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 22:52:59,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 22:52:59,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 9] total 26 [2021-11-20 22:52:59,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496349232] [2021-11-20 22:52:59,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:59,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 22:52:59,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:59,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 22:52:59,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2021-11-20 22:52:59,758 INFO L87 Difference]: Start difference. First operand 13734 states and 30352 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-11-20 22:53:04,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:53:04,391 INFO L93 Difference]: Finished difference Result 16505 states and 36188 transitions. [2021-11-20 22:53:04,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 22:53:04,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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 45 [2021-11-20 22:53:04,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:53:04,432 INFO L225 Difference]: With dead ends: 16505 [2021-11-20 22:53:04,432 INFO L226 Difference]: Without dead ends: 16505 [2021-11-20 22:53:04,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=194, Invalid=996, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 22:53:04,433 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 88 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 22:53:04,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 29 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-20 22:53:04,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16505 states. [2021-11-20 22:53:04,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16505 to 13858. [2021-11-20 22:53:04,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13858 states, 13845 states have (on average 2.2101841820151678) internal successors, (30600), 13857 states have internal predecessors, (30600), 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) [2021-11-20 22:53:05,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13858 states to 13858 states and 30600 transitions. [2021-11-20 22:53:05,007 INFO L78 Accepts]: Start accepts. Automaton has 13858 states and 30600 transitions. Word has length 45 [2021-11-20 22:53:05,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:53:05,007 INFO L470 AbstractCegarLoop]: Abstraction has 13858 states and 30600 transitions. [2021-11-20 22:53:05,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-11-20 22:53:05,008 INFO L276 IsEmpty]: Start isEmpty. Operand 13858 states and 30600 transitions. [2021-11-20 22:53:05,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 22:53:05,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:53:05,010 INFO L514 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:53:05,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-20 22:53:05,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 22:53:05,235 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:53:05,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:53:05,235 INFO L85 PathProgramCache]: Analyzing trace with hash 435292203, now seen corresponding path program 6 times [2021-11-20 22:53:05,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:53:05,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707405315] [2021-11-20 22:53:05,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:53:05,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:53:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:53:05,509 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:53:05,509 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:53:05,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707405315] [2021-11-20 22:53:05,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707405315] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:53:05,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724107156] [2021-11-20 22:53:05,510 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 22:53:05,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:53:05,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:53:05,511 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:53:05,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 22:53:05,697 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 22:53:05,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 22:53:05,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-20 22:53:05,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:53:06,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 22:53:06,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-20 22:53:06,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 22:53:06,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-20 22:53:06,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:06,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-20 22:53:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:53:06,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:53:06,933 INFO L354 Elim1Store]: treesize reduction 222, result has 16.2 percent of original size [2021-11-20 22:53:06,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 case distinctions, treesize of input 62 treesize of output 57 [2021-11-20 22:53:06,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 65 treesize of output 53 [2021-11-20 22:53:06,941 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-20 22:53:06,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 60 treesize of output 42 [2021-11-20 22:53:06,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:06,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:06,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:06,984 INFO L354 Elim1Store]: treesize reduction 107, result has 29.6 percent of original size [2021-11-20 22:53:06,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 60 treesize of output 57 [2021-11-20 22:53:06,992 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 22:53:06,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 65 treesize of output 57 [2021-11-20 22:53:06,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:06,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:06,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:06,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:07,006 INFO L354 Elim1Store]: treesize reduction 37, result has 9.8 percent of original size [2021-11-20 22:53:07,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 28 [2021-11-20 22:53:07,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:07,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:07,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:07,059 INFO L354 Elim1Store]: treesize reduction 109, result has 28.3 percent of original size [2021-11-20 22:53:07,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 57 [2021-11-20 22:53:07,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 49 [2021-11-20 22:53:07,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:07,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:07,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:07,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:07,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2021-11-20 22:53:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:53:07,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724107156] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:53:07,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1805877458] [2021-11-20 22:53:07,346 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-11-20 22:53:07,347 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:53:07,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2021-11-20 22:53:07,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547587337] [2021-11-20 22:53:07,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:53:07,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-20 22:53:07,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:53:07,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-20 22:53:07,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2021-11-20 22:53:07,349 INFO L87 Difference]: Start difference. First operand 13858 states and 30600 transitions. Second operand has 31 states, 30 states have (on average 3.4) internal successors, (102), 31 states have internal predecessors, (102), 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) [2021-11-20 22:53:14,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:53:14,540 INFO L93 Difference]: Finished difference Result 16893 states and 36447 transitions. [2021-11-20 22:53:14,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-20 22:53:14,541 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.4) internal successors, (102), 31 states have internal predecessors, (102), 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 45 [2021-11-20 22:53:14,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:53:14,575 INFO L225 Difference]: With dead ends: 16893 [2021-11-20 22:53:14,575 INFO L226 Difference]: Without dead ends: 16893 [2021-11-20 22:53:14,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=914, Invalid=3778, Unknown=0, NotChecked=0, Total=4692 [2021-11-20 22:53:14,578 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 526 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 3336 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 3507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 3336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-20 22:53:14,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 381 Invalid, 3507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 3336 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-20 22:53:14,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16893 states. [2021-11-20 22:53:14,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16893 to 13955. [2021-11-20 22:53:15,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13955 states, 13942 states have (on average 2.2092239277004735) internal successors, (30801), 13954 states have internal predecessors, (30801), 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) [2021-11-20 22:53:15,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13955 states to 13955 states and 30801 transitions. [2021-11-20 22:53:15,044 INFO L78 Accepts]: Start accepts. Automaton has 13955 states and 30801 transitions. Word has length 45 [2021-11-20 22:53:15,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:53:15,044 INFO L470 AbstractCegarLoop]: Abstraction has 13955 states and 30801 transitions. [2021-11-20 22:53:15,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.4) internal successors, (102), 31 states have internal predecessors, (102), 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) [2021-11-20 22:53:15,045 INFO L276 IsEmpty]: Start isEmpty. Operand 13955 states and 30801 transitions. [2021-11-20 22:53:15,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 22:53:15,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:53:15,048 INFO L514 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:53:15,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-20 22:53:15,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 22:53:15,263 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:53:15,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:53:15,264 INFO L85 PathProgramCache]: Analyzing trace with hash -641929563, now seen corresponding path program 7 times [2021-11-20 22:53:15,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:53:15,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311817928] [2021-11-20 22:53:15,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:53:15,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:53:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:53:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:53:15,637 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:53:15,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311817928] [2021-11-20 22:53:15,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311817928] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:53:15,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278643462] [2021-11-20 22:53:15,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 22:53:15,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:53:15,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:53:15,643 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:53:15,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-20 22:53:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:53:15,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 22:53:15,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:53:16,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 22:53:16,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:16,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-20 22:53:16,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:16,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:16,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:16,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 22:53:16,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:16,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:16,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:16,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:16,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:16,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:16,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-20 22:53:16,513 INFO L354 Elim1Store]: treesize reduction 204, result has 14.6 percent of original size [2021-11-20 22:53:16,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 70 [2021-11-20 22:53:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:53:16,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:53:16,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:16,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:16,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:16,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:16,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:16,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:16,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:16,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:16,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:53:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:53:17,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278643462] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:53:17,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [621588747] [2021-11-20 22:53:17,217 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-11-20 22:53:17,217 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:53:17,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2021-11-20 22:53:17,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188824489] [2021-11-20 22:53:17,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:53:17,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-20 22:53:17,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:53:17,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-20 22:53:17,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2021-11-20 22:53:17,219 INFO L87 Difference]: Start difference. First operand 13955 states and 30801 transitions. Second operand has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 states have internal predecessors, (103), 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) [2021-11-20 22:53:26,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:53:26,125 INFO L93 Difference]: Finished difference Result 22728 states and 49256 transitions. [2021-11-20 22:53:26,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-20 22:53:26,125 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 states have internal predecessors, (103), 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 45 [2021-11-20 22:53:26,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:53:26,153 INFO L225 Difference]: With dead ends: 22728 [2021-11-20 22:53:26,153 INFO L226 Difference]: Without dead ends: 22728 [2021-11-20 22:53:26,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1063, Invalid=4943, Unknown=0, NotChecked=0, Total=6006 [2021-11-20 22:53:26,156 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 735 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 5894 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 6121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 5894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-20 22:53:26,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 448 Invalid, 6121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 5894 Invalid, 0 Unknown, 76 Unchecked, 6.3s Time] [2021-11-20 22:53:26,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22728 states. [2021-11-20 22:53:26,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22728 to 15268. [2021-11-20 22:53:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15268 states, 15255 states have (on average 2.1956735496558504) internal successors, (33495), 15267 states have internal predecessors, (33495), 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) [2021-11-20 22:53:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15268 states to 15268 states and 33495 transitions. [2021-11-20 22:53:26,597 INFO L78 Accepts]: Start accepts. Automaton has 15268 states and 33495 transitions. Word has length 45 [2021-11-20 22:53:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:53:26,598 INFO L470 AbstractCegarLoop]: Abstraction has 15268 states and 33495 transitions. [2021-11-20 22:53:26,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 states have internal predecessors, (103), 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) [2021-11-20 22:53:26,598 INFO L276 IsEmpty]: Start isEmpty. Operand 15268 states and 33495 transitions. [2021-11-20 22:53:26,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 22:53:26,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:53:26,602 INFO L514 BasicCegarLoop]: trace histogram [10, 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] [2021-11-20 22:53:26,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-20 22:53:26,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:53:26,815 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:53:26,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:53:26,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1804731285, now seen corresponding path program 1 times [2021-11-20 22:53:26,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:53:26,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790882571] [2021-11-20 22:53:26,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:53:26,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:53:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:53:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:53:27,005 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:53:27,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790882571] [2021-11-20 22:53:27,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790882571] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:53:27,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123545932] [2021-11-20 22:53:27,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:53:27,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:53:27,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:53:27,006 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:53:27,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-20 22:53:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:53:27,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 22:53:27,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:53:27,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 22:53:27,720 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-20 22:53:27,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2021-11-20 22:53:27,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:27,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-20 22:53:27,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:27,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:27,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:27,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 22:53:27,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:27,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:27,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:27,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:27,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:27,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:27,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-20 22:53:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:53:27,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:53:27,988 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-20 22:53:27,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 36 treesize of output 29 [2021-11-20 22:53:27,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 19 [2021-11-20 22:53:27,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 22:53:28,202 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:53:28,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123545932] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:53:28,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [138247900] [2021-11-20 22:53:28,203 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-11-20 22:53:28,204 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:53:28,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2021-11-20 22:53:28,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497422564] [2021-11-20 22:53:28,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:53:28,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-20 22:53:28,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:53:28,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-20 22:53:28,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2021-11-20 22:53:28,206 INFO L87 Difference]: Start difference. First operand 15268 states and 33495 transitions. Second operand has 29 states, 28 states have (on average 3.5714285714285716) internal successors, (100), 29 states have internal predecessors, (100), 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) [2021-11-20 22:53:31,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:53:31,854 INFO L93 Difference]: Finished difference Result 23528 states and 50710 transitions. [2021-11-20 22:53:31,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-20 22:53:31,855 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 3.5714285714285716) internal successors, (100), 29 states have internal predecessors, (100), 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 45 [2021-11-20 22:53:31,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:53:31,888 INFO L225 Difference]: With dead ends: 23528 [2021-11-20 22:53:31,888 INFO L226 Difference]: Without dead ends: 23528 [2021-11-20 22:53:31,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2507 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1276, Invalid=5864, Unknown=0, NotChecked=0, Total=7140 [2021-11-20 22:53:31,891 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 868 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 3296 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 3731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 3296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 22:53:31,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [868 Valid, 176 Invalid, 3731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 3296 Invalid, 0 Unknown, 167 Unchecked, 2.2s Time] [2021-11-20 22:53:31,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23528 states. [2021-11-20 22:53:32,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23528 to 15551. [2021-11-20 22:53:32,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15551 states, 15538 states have (on average 2.1934611919165916) internal successors, (34082), 15550 states have internal predecessors, (34082), 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) [2021-11-20 22:53:32,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15551 states to 15551 states and 34082 transitions. [2021-11-20 22:53:32,406 INFO L78 Accepts]: Start accepts. Automaton has 15551 states and 34082 transitions. Word has length 45 [2021-11-20 22:53:32,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:53:32,406 INFO L470 AbstractCegarLoop]: Abstraction has 15551 states and 34082 transitions. [2021-11-20 22:53:32,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 3.5714285714285716) internal successors, (100), 29 states have internal predecessors, (100), 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) [2021-11-20 22:53:32,412 INFO L276 IsEmpty]: Start isEmpty. Operand 15551 states and 34082 transitions. [2021-11-20 22:53:32,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 22:53:32,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:53:32,420 INFO L514 BasicCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1] [2021-11-20 22:53:32,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-20 22:53:32,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:53:32,643 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:53:32,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:53:32,644 INFO L85 PathProgramCache]: Analyzing trace with hash 458078166, now seen corresponding path program 1 times [2021-11-20 22:53:32,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:53:32,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198765192] [2021-11-20 22:53:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:53:32,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:53:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:53:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:53:33,233 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:53:33,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198765192] [2021-11-20 22:53:33,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198765192] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:53:33,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032160112] [2021-11-20 22:53:33,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:53:33,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:53:33,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:53:33,235 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:53:33,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-20 22:53:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:53:33,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 22:53:33,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:53:33,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 22:53:33,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-20 22:53:33,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 22:53:33,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-20 22:53:33,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-20 22:53:33,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:33,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2021-11-20 22:53:34,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 78 [2021-11-20 22:53:34,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:53:34,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 90 [2021-11-20 22:53:34,543 INFO L354 Elim1Store]: treesize reduction 783, result has 9.3 percent of original size [2021-11-20 22:53:34,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 121 treesize of output 127 [2021-11-20 22:53:47,946 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:53:47,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:53:50,705 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| Int)) (or (< (+ |c_~#cache~0.offset| (* 28 |c_ULTIMATE.start_main_~i~2#1|)) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) (and (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130| Int)) (= (select (select (store |c_#race| |c_~#cache~0.base| (store (store (store (store (select |c_#race| |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130|)) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130| Int)) (= (select (select (store |c_#race| |c_~#cache~0.base| (store (store (store (store (select |c_#race| |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130|)) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130| Int)) (= (select (select (store |c_#race| |c_~#cache~0.base| (store (store (store (store (select |c_#race| |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130|)) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130| Int)) (= (select (select (store |c_#race| |c_~#cache~0.base| (store (store (store (store (select |c_#race| |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130|)) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2)) 0))))) is different from false [2021-11-20 22:54:26,032 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:54:26,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032160112] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:54:26,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [84108110] [2021-11-20 22:54:26,033 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-11-20 22:54:26,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:54:26,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 14] total 38 [2021-11-20 22:54:26,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141512448] [2021-11-20 22:54:26,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:54:26,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-20 22:54:26,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:54:26,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-20 22:54:26,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1165, Unknown=17, NotChecked=72, Total=1482 [2021-11-20 22:54:26,037 INFO L87 Difference]: Start difference. First operand 15551 states and 34082 transitions. Second operand has 39 states, 38 states have (on average 2.710526315789474) internal successors, (103), 39 states have internal predecessors, (103), 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) [2021-11-20 22:54:29,522 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (and (<= |c_ULTIMATE.start_main_~i~2#1| 0) (= (select .cse0 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2)) 0) (= (select .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= |c_~#cache~0.base| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (<= (+ |c_~#cache~0.offset| 28) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) (= (select .cse0 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3)) 0) (= |c_ULTIMATE.start_main_~i~2#1| 0) (<= 1 (div (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (* |c_~#cache~0.offset| (- 1))) 28)) (forall ((|v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| Int)) (or (< (+ |c_~#cache~0.offset| (* 28 |c_ULTIMATE.start_main_~i~2#1|)) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) (and (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130| Int)) (= (select (select (store |c_#race| |c_~#cache~0.base| (store (store (store (store (select |c_#race| |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130|)) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130| Int)) (= (select (select (store |c_#race| |c_~#cache~0.base| (store (store (store (store (select |c_#race| |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130|)) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130| Int)) (= (select (select (store |c_#race| |c_~#cache~0.base| (store (store (store (store (select |c_#race| |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130|)) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130| Int)) (= (select (select (store |c_#race| |c_~#cache~0.base| (store (store (store (store (select |c_#race| |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130|)) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2)) 0))))) (<= 1 |c_t_funThread1of1ForFork0_~i~0#1|) (= (select .cse0 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1)) 0) (= |c_~#cache~0.base| 1))) is different from false [2021-11-20 22:54:35,548 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (and (<= |c_ULTIMATE.start_main_~i~2#1| 0) (= (select .cse0 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2)) 0) (= (select .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= |c_~#cache~0.base| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (= (select .cse0 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3)) 0) (<= 1 (div (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (* |c_~#cache~0.offset| (- 1))) 28)) (forall ((|v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| Int)) (or (< (+ |c_~#cache~0.offset| (* 28 |c_ULTIMATE.start_main_~i~2#1|)) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) (and (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130| Int)) (= (select (select (store |c_#race| |c_~#cache~0.base| (store (store (store (store (select |c_#race| |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130|)) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130| Int)) (= (select (select (store |c_#race| |c_~#cache~0.base| (store (store (store (store (select |c_#race| |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130|)) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130| Int)) (= (select (select (store |c_#race| |c_~#cache~0.base| (store (store (store (store (select |c_#race| |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130|)) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130| Int)) (= (select (select (store |c_#race| |c_~#cache~0.base| (store (store (store (store (select |c_#race| |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_277| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_130|)) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2)) 0))))) (<= 1 |c_t_funThread1of1ForFork0_~i~0#1|) (= (select .cse0 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1)) 0) (= |c_~#cache~0.base| 1))) is different from false [2021-11-20 22:54:50,303 WARN L227 SmtUtils]: Spent 8.38s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 22:55:12,244 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 22:55:36,072 WARN L227 SmtUtils]: Spent 8.22s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 22:56:45,500 WARN L227 SmtUtils]: Spent 6.13s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 22:56:48,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:56:48,750 INFO L93 Difference]: Finished difference Result 48652 states and 106185 transitions. [2021-11-20 22:56:48,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-20 22:56:48,751 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.710526315789474) internal successors, (103), 39 states have internal predecessors, (103), 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 45 [2021-11-20 22:56:48,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:56:48,822 INFO L225 Difference]: With dead ends: 48652 [2021-11-20 22:56:48,822 INFO L226 Difference]: Without dead ends: 48652 [2021-11-20 22:56:48,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 67 SyntacticMatches, 6 SemanticMatches, 73 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 191.4s TimeCoverageRelationStatistics Valid=767, Invalid=4301, Unknown=56, NotChecked=426, Total=5550 [2021-11-20 22:56:48,824 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 758 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 3453 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 6969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3389 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 22:56:48,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 495 Invalid, 6969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3453 Invalid, 0 Unknown, 3389 Unchecked, 2.3s Time] [2021-11-20 22:56:48,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48652 states. [2021-11-20 22:56:49,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48652 to 32259. [2021-11-20 22:56:49,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32259 states, 32246 states have (on average 2.209173230788315) internal successors, (71237), 32258 states have internal predecessors, (71237), 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) [2021-11-20 22:56:49,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32259 states to 32259 states and 71237 transitions. [2021-11-20 22:56:49,646 INFO L78 Accepts]: Start accepts. Automaton has 32259 states and 71237 transitions. Word has length 45 [2021-11-20 22:56:49,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:56:49,646 INFO L470 AbstractCegarLoop]: Abstraction has 32259 states and 71237 transitions. [2021-11-20 22:56:49,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.710526315789474) internal successors, (103), 39 states have internal predecessors, (103), 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) [2021-11-20 22:56:49,646 INFO L276 IsEmpty]: Start isEmpty. Operand 32259 states and 71237 transitions. [2021-11-20 22:56:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 22:56:49,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:56:49,650 INFO L514 BasicCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1] [2021-11-20 22:56:49,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-20 22:56:49,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:56:49,875 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:56:49,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:56:49,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1859814048, now seen corresponding path program 2 times [2021-11-20 22:56:49,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:56:49,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575932477] [2021-11-20 22:56:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:56:49,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:56:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:56:50,435 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:56:50,435 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:56:50,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575932477] [2021-11-20 22:56:50,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575932477] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:56:50,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295206373] [2021-11-20 22:56:50,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 22:56:50,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:56:50,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:56:50,436 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:56:50,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-20 22:56:50,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-20 22:56:50,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 22:56:50,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-20 22:56:50,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:56:50,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-11-20 22:56:50,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 22:56:50,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:50,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-20 22:56:50,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:50,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:50,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:50,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 22:56:51,023 INFO L354 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2021-11-20 22:56:51,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 11 [2021-11-20 22:56:51,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-20 22:56:51,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-20 22:56:51,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2021-11-20 22:56:51,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 78 [2021-11-20 22:56:51,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:56:51,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 90 [2021-11-20 22:56:51,770 INFO L354 Elim1Store]: treesize reduction 456, result has 12.0 percent of original size [2021-11-20 22:56:51,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 93 treesize of output 106 [2021-11-20 22:57:01,862 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-20 22:57:01,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:57:04,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:04,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:04,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:04,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:04,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:04,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:04,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:04,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:04,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:04,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 59 [2021-11-20 22:57:04,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 64 treesize of output 57 [2021-11-20 22:57:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-20 22:57:05,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295206373] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 22:57:05,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 22:57:05,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11, 13] total 34 [2021-11-20 22:57:05,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408837962] [2021-11-20 22:57:05,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:57:05,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 22:57:05,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:57:05,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 22:57:05,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=977, Unknown=4, NotChecked=0, Total=1190 [2021-11-20 22:57:05,036 INFO L87 Difference]: Start difference. First operand 32259 states and 71237 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 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) [2021-11-20 22:57:06,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:57:06,182 INFO L93 Difference]: Finished difference Result 54507 states and 119164 transitions. [2021-11-20 22:57:06,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 22:57:06,183 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 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 45 [2021-11-20 22:57:06,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:57:06,272 INFO L225 Difference]: With dead ends: 54507 [2021-11-20 22:57:06,272 INFO L226 Difference]: Without dead ends: 54507 [2021-11-20 22:57:06,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 66 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=220, Invalid=1108, Unknown=4, NotChecked=0, Total=1332 [2021-11-20 22:57:06,273 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 52 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 467 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 22:57:06,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 37 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 220 Invalid, 0 Unknown, 467 Unchecked, 0.2s Time] [2021-11-20 22:57:06,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54507 states. [2021-11-20 22:57:07,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54507 to 32673. [2021-11-20 22:57:07,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32673 states, 32660 states have (on average 2.2065217391304346) internal successors, (72065), 32672 states have internal predecessors, (72065), 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) [2021-11-20 22:57:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32673 states to 32673 states and 72065 transitions. [2021-11-20 22:57:07,217 INFO L78 Accepts]: Start accepts. Automaton has 32673 states and 72065 transitions. Word has length 45 [2021-11-20 22:57:07,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:57:07,217 INFO L470 AbstractCegarLoop]: Abstraction has 32673 states and 72065 transitions. [2021-11-20 22:57:07,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 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) [2021-11-20 22:57:07,217 INFO L276 IsEmpty]: Start isEmpty. Operand 32673 states and 72065 transitions. [2021-11-20 22:57:07,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 22:57:07,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:57:07,219 INFO L514 BasicCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1] [2021-11-20 22:57:07,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-20 22:57:07,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:57:07,447 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:57:07,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:57:07,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1915128076, now seen corresponding path program 3 times [2021-11-20 22:57:07,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:57:07,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596301101] [2021-11-20 22:57:07,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:57:07,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:57:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:57:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:57:08,191 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:57:08,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596301101] [2021-11-20 22:57:08,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596301101] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:57:08,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862032767] [2021-11-20 22:57:08,192 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 22:57:08,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:57:08,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:57:08,195 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:57:08,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-20 22:57:08,501 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 22:57:08,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 22:57:08,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-20 22:57:08,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:57:08,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 22:57:08,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:08,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-20 22:57:08,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:08,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:08,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:08,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 22:57:09,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-20 22:57:09,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-20 22:57:09,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2021-11-20 22:57:09,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 78 [2021-11-20 22:57:09,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 90 [2021-11-20 22:57:09,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:09,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 87 [2021-11-20 22:57:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:57:09,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:57:14,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:14,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:14,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:14,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:14,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:14,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:14,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:14,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:14,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:57:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:57:14,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862032767] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:57:14,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1191574834] [2021-11-20 22:57:14,958 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-11-20 22:57:14,958 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:57:14,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 14] total 38 [2021-11-20 22:57:14,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019821664] [2021-11-20 22:57:14,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:57:14,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-20 22:57:14,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:57:14,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-20 22:57:14,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1238, Unknown=0, NotChecked=0, Total=1482 [2021-11-20 22:57:14,961 INFO L87 Difference]: Start difference. First operand 32673 states and 72065 transitions. Second operand has 39 states, 38 states have (on average 2.710526315789474) internal successors, (103), 39 states have internal predecessors, (103), 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) [2021-11-20 22:57:23,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:57:23,622 INFO L93 Difference]: Finished difference Result 53151 states and 116543 transitions. [2021-11-20 22:57:23,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-20 22:57:23,622 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.710526315789474) internal successors, (103), 39 states have internal predecessors, (103), 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 45 [2021-11-20 22:57:23,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:57:23,709 INFO L225 Difference]: With dead ends: 53151 [2021-11-20 22:57:23,710 INFO L226 Difference]: Without dead ends: 53151 [2021-11-20 22:57:23,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 68 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1684 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=1185, Invalid=4217, Unknown=0, NotChecked=0, Total=5402 [2021-11-20 22:57:23,712 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 541 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 4354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1952 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 22:57:23,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 312 Invalid, 4354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2282 Invalid, 0 Unknown, 1952 Unchecked, 1.8s Time] [2021-11-20 22:57:23,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53151 states. [2021-11-20 22:57:24,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53151 to 48953. [2021-11-20 22:57:24,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48953 states, 48940 states have (on average 2.213608500204332) internal successors, (108334), 48952 states have internal predecessors, (108334), 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) [2021-11-20 22:57:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48953 states to 48953 states and 108334 transitions. [2021-11-20 22:57:24,964 INFO L78 Accepts]: Start accepts. Automaton has 48953 states and 108334 transitions. Word has length 45 [2021-11-20 22:57:24,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:57:24,964 INFO L470 AbstractCegarLoop]: Abstraction has 48953 states and 108334 transitions. [2021-11-20 22:57:24,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.710526315789474) internal successors, (103), 39 states have internal predecessors, (103), 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) [2021-11-20 22:57:24,964 INFO L276 IsEmpty]: Start isEmpty. Operand 48953 states and 108334 transitions. [2021-11-20 22:57:24,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 22:57:24,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:57:24,967 INFO L514 BasicCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1] [2021-11-20 22:57:25,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-20 22:57:25,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-20 22:57:25,183 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:57:25,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:57:25,184 INFO L85 PathProgramCache]: Analyzing trace with hash -4979788, now seen corresponding path program 4 times [2021-11-20 22:57:25,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:57:25,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969309844] [2021-11-20 22:57:25,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:57:25,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:57:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:57:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:57:26,096 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:57:26,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969309844] [2021-11-20 22:57:26,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969309844] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:57:26,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614438105] [2021-11-20 22:57:26,097 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 22:57:26,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:57:26,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:57:26,098 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:57:26,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-20 22:57:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:57:26,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 22:57:26,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:57:26,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 22:57:26,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-20 22:57:26,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 22:57:26,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-20 22:57:26,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-20 22:57:26,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:26,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2021-11-20 22:57:27,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 78 [2021-11-20 22:57:27,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:57:27,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 90 [2021-11-20 22:57:27,429 INFO L354 Elim1Store]: treesize reduction 783, result has 9.3 percent of original size [2021-11-20 22:57:27,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 121 treesize of output 127 [2021-11-20 22:57:39,376 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:57:39,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:57:43,262 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| Int)) (or (and (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136| Int)) (= (let ((.cse1 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2))) (select (select (let ((.cse0 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse1 0) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3) 0)))) (store .cse0 |c_~#cache~0.base| (store (store (store (store (select .cse0 |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136|))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse1)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136| Int)) (= (select (select (let ((.cse2 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2) 0) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3) 0)))) (store .cse2 |c_~#cache~0.base| (store (store (store (store (select .cse2 |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136|))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136| Int)) (= (let ((.cse4 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3))) (select (select (let ((.cse3 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2) 0) .cse4 0)))) (store .cse3 |c_~#cache~0.base| (store (store (store (store (select .cse3 |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136|))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse4)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136| Int)) (= (select (select (let ((.cse5 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2) 0) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3) 0)))) (store .cse5 |c_~#cache~0.base| (store (store (store (store (select .cse5 |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136|))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 0))) (< (+ |c_~#cache~0.offset| (* 28 |c_ULTIMATE.start_main_~i~2#1|)) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|))) is different from false [2021-11-20 22:57:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:57:58,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614438105] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:57:58,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [986314456] [2021-11-20 22:57:58,932 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-11-20 22:57:58,933 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:57:58,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 14] total 38 [2021-11-20 22:57:58,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638767904] [2021-11-20 22:57:58,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:57:58,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-20 22:57:58,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:57:58,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-20 22:57:58,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1167, Unknown=9, NotChecked=72, Total=1482 [2021-11-20 22:57:58,935 INFO L87 Difference]: Start difference. First operand 48953 states and 108334 transitions. Second operand has 39 states, 38 states have (on average 2.710526315789474) internal successors, (103), 39 states have internal predecessors, (103), 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) [2021-11-20 22:58:01,822 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (let ((.cse7 (store .cse6 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2) 0)) (.cse8 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1))) (and (<= |c_ULTIMATE.start_main_~i~2#1| 0) (forall ((|v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| Int)) (or (and (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136| Int)) (= (let ((.cse1 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2))) (select (select (let ((.cse0 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse1 0) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3) 0)))) (store .cse0 |c_~#cache~0.base| (store (store (store (store (select .cse0 |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136|))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse1)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136| Int)) (= (select (select (let ((.cse2 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2) 0) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3) 0)))) (store .cse2 |c_~#cache~0.base| (store (store (store (store (select .cse2 |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136|))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136| Int)) (= (let ((.cse4 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3))) (select (select (let ((.cse3 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2) 0) .cse4 0)))) (store .cse3 |c_~#cache~0.base| (store (store (store (store (select .cse3 |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136|))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse4)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136| Int)) (= (select (select (let ((.cse5 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2) 0) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3) 0)))) (store .cse5 |c_~#cache~0.base| (store (store (store (store (select .cse5 |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136|))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 0))) (< (+ |c_~#cache~0.offset| (* 28 |c_ULTIMATE.start_main_~i~2#1|)) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|))) (= (select .cse6 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= |c_~#cache~0.base| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (<= (+ |c_~#cache~0.offset| 28) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) (= |c_ULTIMATE.start_main_~i~2#1| 0) (= (select .cse7 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 0) (<= 1 (div (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (* |c_~#cache~0.offset| (- 1))) 28)) (<= 1 |c_t_funThread1of1ForFork0_~i~0#1|) (= (select .cse6 .cse8) 0) (= (select .cse7 .cse8) 0) (= |c_~#cache~0.base| 1)))) is different from false [2021-11-20 22:58:09,206 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (and (<= |c_ULTIMATE.start_main_~i~2#1| 0) (forall ((|v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| Int)) (or (and (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136| Int)) (= (let ((.cse1 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2))) (select (select (let ((.cse0 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse1 0) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3) 0)))) (store .cse0 |c_~#cache~0.base| (store (store (store (store (select .cse0 |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136|))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse1)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136| Int)) (= (select (select (let ((.cse2 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2) 0) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3) 0)))) (store .cse2 |c_~#cache~0.base| (store (store (store (store (select .cse2 |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136|))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136| Int)) (= (let ((.cse4 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3))) (select (select (let ((.cse3 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2) 0) .cse4 0)))) (store .cse3 |c_~#cache~0.base| (store (store (store (store (select .cse3 |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136|))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse4)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136| Int)) (= (select (select (let ((.cse5 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2) 0) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3) 0)))) (store .cse5 |c_~#cache~0.base| (store (store (store (store (select .cse5 |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136|))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 0))) (< (+ |c_~#cache~0.offset| (* 28 |c_ULTIMATE.start_main_~i~2#1|)) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|))) (= (select .cse6 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= |c_~#cache~0.base| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (<= 1 (div (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (* |c_~#cache~0.offset| (- 1))) 28)) (<= 1 |c_t_funThread1of1ForFork0_~i~0#1|) (= (select .cse6 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1)) 0) (= |c_~#cache~0.base| 1))) is different from false [2021-11-20 22:58:28,750 WARN L227 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 22:58:30,774 WARN L838 $PredicateComparison]: unable to prove that (and (< |c_ULTIMATE.start_main_~i~2#1| (+ |c_t_funThread1of1ForFork0_~i~0#1| 1)) (forall ((|v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| Int)) (or (and (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136| Int)) (= (let ((.cse1 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2))) (select (select (let ((.cse0 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse1 0) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3) 0)))) (store .cse0 |c_~#cache~0.base| (store (store (store (store (select .cse0 |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136|))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse1)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136| Int)) (= (select (select (let ((.cse2 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2) 0) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3) 0)))) (store .cse2 |c_~#cache~0.base| (store (store (store (store (select .cse2 |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136|))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136| Int)) (= (let ((.cse4 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3))) (select (select (let ((.cse3 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2) 0) .cse4 0)))) (store .cse3 |c_~#cache~0.base| (store (store (store (store (select .cse3 |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136|))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse4)) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136| Int)) (= (select (select (let ((.cse5 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2) 0) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3) 0)))) (store .cse5 |c_~#cache~0.base| (store (store (store (store (select .cse5 |c_~#cache~0.base|) (+ |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| 1) 0) (+ 2 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|) 0) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280| |v_ULTIMATE.start_cache_entry_addref_#t~nondet33#1_136|))) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 0))) (< (+ |c_~#cache~0.offset| (* 28 |c_ULTIMATE.start_main_~i~2#1|)) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_280|))) (= |c_~#cache~0.base| 1)) is different from false [2021-11-20 22:58:46,850 WARN L227 SmtUtils]: Spent 9.71s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 22:59:08,066 WARN L227 SmtUtils]: Spent 10.54s on a formula simplification that was a NOOP. DAG size: 84 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 22:59:18,812 WARN L227 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 57 DAG size of output: 53 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 22:59:23,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:59:23,086 INFO L93 Difference]: Finished difference Result 197162 states and 437249 transitions. [2021-11-20 22:59:23,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-20 22:59:23,087 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.710526315789474) internal successors, (103), 39 states have internal predecessors, (103), 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 45 [2021-11-20 22:59:23,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:59:23,596 INFO L225 Difference]: With dead ends: 197162 [2021-11-20 22:59:23,596 INFO L226 Difference]: Without dead ends: 197162 [2021-11-20 22:59:23,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 67 SyntacticMatches, 8 SemanticMatches, 73 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1738 ImplicationChecksByTransitivity, 112.3s TimeCoverageRelationStatistics Valid=691, Invalid=4275, Unknown=20, NotChecked=564, Total=5550 [2021-11-20 22:59:23,598 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 823 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 3069 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 6147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2988 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 22:59:23,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [823 Valid, 475 Invalid, 6147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3069 Invalid, 0 Unknown, 2988 Unchecked, 2.3s Time] [2021-11-20 22:59:23,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197162 states. [2021-11-20 22:59:27,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197162 to 144332. [2021-11-20 22:59:27,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144332 states, 144319 states have (on average 2.2291590157914065) internal successors, (321710), 144331 states have internal predecessors, (321710), 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) [2021-11-20 22:59:28,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144332 states to 144332 states and 321710 transitions. [2021-11-20 22:59:28,531 INFO L78 Accepts]: Start accepts. Automaton has 144332 states and 321710 transitions. Word has length 45 [2021-11-20 22:59:28,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:59:28,531 INFO L470 AbstractCegarLoop]: Abstraction has 144332 states and 321710 transitions. [2021-11-20 22:59:28,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.710526315789474) internal successors, (103), 39 states have internal predecessors, (103), 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) [2021-11-20 22:59:28,531 INFO L276 IsEmpty]: Start isEmpty. Operand 144332 states and 321710 transitions. [2021-11-20 22:59:28,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 22:59:28,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:59:28,538 INFO L514 BasicCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1] [2021-11-20 22:59:28,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-20 22:59:28,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-20 22:59:28,759 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:59:28,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:59:28,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1893467714, now seen corresponding path program 5 times [2021-11-20 22:59:28,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:59:28,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060126755] [2021-11-20 22:59:28,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:59:28,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:59:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:59:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:59:29,363 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:59:29,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060126755] [2021-11-20 22:59:29,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060126755] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:59:29,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620714203] [2021-11-20 22:59:29,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 22:59:29,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:59:29,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:59:29,364 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:59:29,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-20 22:59:29,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-20 22:59:29,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 22:59:29,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-20 22:59:29,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:59:29,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-11-20 22:59:29,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 22:59:29,659 INFO L354 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2021-11-20 22:59:29,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 11 [2021-11-20 22:59:29,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:29,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-20 22:59:29,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:29,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:29,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:29,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 22:59:29,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:29,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:29,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:29,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:29,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:29,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:29,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-20 22:59:30,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-20 22:59:30,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2021-11-20 22:59:30,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 78 [2021-11-20 22:59:30,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:30,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 90 [2021-11-20 22:59:30,806 INFO L354 Elim1Store]: treesize reduction 456, result has 12.0 percent of original size [2021-11-20 22:59:30,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 93 treesize of output 106 [2021-11-20 22:59:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-20 22:59:40,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:59:44,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:44,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:44,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:44,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:44,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:44,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:44,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:44,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:44,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:44,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 59 [2021-11-20 22:59:44,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 64 treesize of output 57 [2021-11-20 22:59:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-20 22:59:44,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620714203] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 22:59:44,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 22:59:44,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11, 13] total 34 [2021-11-20 22:59:44,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883062114] [2021-11-20 22:59:44,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:59:44,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 22:59:44,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:59:44,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 22:59:44,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=952, Unknown=4, NotChecked=0, Total=1190 [2021-11-20 22:59:44,292 INFO L87 Difference]: Start difference. First operand 144332 states and 321710 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 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) [2021-11-20 22:59:46,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:59:46,258 INFO L93 Difference]: Finished difference Result 212826 states and 471808 transitions. [2021-11-20 22:59:46,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 22:59:46,259 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 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 45 [2021-11-20 22:59:46,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:59:46,771 INFO L225 Difference]: With dead ends: 212826 [2021-11-20 22:59:46,771 INFO L226 Difference]: Without dead ends: 212826 [2021-11-20 22:59:46,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 66 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=243, Invalid=1085, Unknown=4, NotChecked=0, Total=1332 [2021-11-20 22:59:46,771 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 54 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 201 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 22:59:46,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 39 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 226 Invalid, 0 Unknown, 201 Unchecked, 0.2s Time] [2021-11-20 22:59:46,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212826 states. [2021-11-20 22:59:50,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212826 to 144688. [2021-11-20 22:59:50,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144688 states, 144675 states have (on average 2.2285951270088127) internal successors, (322422), 144687 states have internal predecessors, (322422), 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) [2021-11-20 22:59:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144688 states to 144688 states and 322422 transitions. [2021-11-20 22:59:51,436 INFO L78 Accepts]: Start accepts. Automaton has 144688 states and 322422 transitions. Word has length 45 [2021-11-20 22:59:51,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:59:51,436 INFO L470 AbstractCegarLoop]: Abstraction has 144688 states and 322422 transitions. [2021-11-20 22:59:51,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 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) [2021-11-20 22:59:51,436 INFO L276 IsEmpty]: Start isEmpty. Operand 144688 states and 322422 transitions. [2021-11-20 22:59:51,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 22:59:51,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:59:51,441 INFO L514 BasicCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1] [2021-11-20 22:59:51,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-20 22:59:51,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-20 22:59:51,651 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 22:59:51,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:59:51,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1881474410, now seen corresponding path program 6 times [2021-11-20 22:59:51,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:59:51,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037836239] [2021-11-20 22:59:51,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:59:51,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:59:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:59:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:59:52,262 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:59:52,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037836239] [2021-11-20 22:59:52,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037836239] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:59:52,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814259103] [2021-11-20 22:59:52,262 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 22:59:52,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:59:52,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:59:52,263 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:59:52,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-20 22:59:52,443 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 22:59:52,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 22:59:52,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-20 22:59:52,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:59:52,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 22:59:52,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:52,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-20 22:59:52,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:52,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:52,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:52,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 22:59:53,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-20 22:59:53,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-20 22:59:53,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2021-11-20 22:59:53,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 78 [2021-11-20 22:59:53,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 90 [2021-11-20 22:59:53,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:59:53,954 INFO L244 Elim1Store]: Index analysis took 389 ms [2021-11-20 22:59:53,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 87 [2021-11-20 22:59:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:59:54,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:59:58,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:58,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:58,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:58,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:58,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:58,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:58,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:58,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:58,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 22:59:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 22:59:58,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814259103] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:59:58,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1604984517] [2021-11-20 22:59:58,696 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-11-20 22:59:58,697 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:59:58,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 14] total 38 [2021-11-20 22:59:58,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896558279] [2021-11-20 22:59:58,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:59:58,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-20 22:59:58,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:59:58,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-20 22:59:58,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1220, Unknown=0, NotChecked=0, Total=1482 [2021-11-20 22:59:58,698 INFO L87 Difference]: Start difference. First operand 144688 states and 322422 transitions. Second operand has 39 states, 38 states have (on average 2.710526315789474) internal successors, (103), 39 states have internal predecessors, (103), 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) [2021-11-20 23:00:08,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:00:08,161 INFO L93 Difference]: Finished difference Result 152112 states and 337379 transitions. [2021-11-20 23:00:08,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 23:00:08,162 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.710526315789474) internal successors, (103), 39 states have internal predecessors, (103), 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 45 [2021-11-20 23:00:08,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:00:08,488 INFO L225 Difference]: With dead ends: 152112 [2021-11-20 23:00:08,488 INFO L226 Difference]: Without dead ends: 152112 [2021-11-20 23:00:08,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1597 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=1199, Invalid=4057, Unknown=0, NotChecked=0, Total=5256 [2021-11-20 23:00:08,489 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 514 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 3909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1634 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:00:08,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 282 Invalid, 3909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2173 Invalid, 0 Unknown, 1634 Unchecked, 1.8s Time] [2021-11-20 23:00:08,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152112 states. [2021-11-20 23:00:11,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152112 to 144907. [2021-11-20 23:00:11,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144907 states, 144894 states have (on average 2.2282565185583945) internal successors, (322861), 144906 states have internal predecessors, (322861), 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) [2021-11-20 23:00:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144907 states to 144907 states and 322861 transitions. [2021-11-20 23:00:12,605 INFO L78 Accepts]: Start accepts. Automaton has 144907 states and 322861 transitions. Word has length 45 [2021-11-20 23:00:12,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:00:12,606 INFO L470 AbstractCegarLoop]: Abstraction has 144907 states and 322861 transitions. [2021-11-20 23:00:12,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.710526315789474) internal successors, (103), 39 states have internal predecessors, (103), 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) [2021-11-20 23:00:12,606 INFO L276 IsEmpty]: Start isEmpty. Operand 144907 states and 322861 transitions. [2021-11-20 23:00:12,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 23:00:12,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:00:12,610 INFO L514 BasicCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1] [2021-11-20 23:00:12,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-20 23:00:12,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-20 23:00:12,835 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 23:00:12,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:00:12,835 INFO L85 PathProgramCache]: Analyzing trace with hash -471176476, now seen corresponding path program 7 times [2021-11-20 23:00:12,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:00:12,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453641855] [2021-11-20 23:00:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:00:12,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:00:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:00:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 23:00:13,490 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:00:13,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453641855] [2021-11-20 23:00:13,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453641855] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:00:13,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317533524] [2021-11-20 23:00:13,490 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 23:00:13,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:00:13,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:00:13,492 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:00:13,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-20 23:00:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:00:13,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-20 23:00:13,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:00:13,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 23:00:14,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-20 23:00:14,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-20 23:00:14,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-20 23:00:14,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-20 23:00:14,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2021-11-20 23:00:14,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 78 [2021-11-20 23:00:14,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 90 [2021-11-20 23:00:14,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:14,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 87 [2021-11-20 23:00:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 23:00:14,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:00:19,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:19,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:19,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:19,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:19,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:19,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:19,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:19,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:19,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:20,094 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 23:00:20,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317533524] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:00:20,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1640299923] [2021-11-20 23:00:20,095 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-11-20 23:00:20,096 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:00:20,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 14] total 38 [2021-11-20 23:00:20,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251884343] [2021-11-20 23:00:20,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:00:20,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-20 23:00:20,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:00:20,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-20 23:00:20,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1222, Unknown=0, NotChecked=0, Total=1482 [2021-11-20 23:00:20,098 INFO L87 Difference]: Start difference. First operand 144907 states and 322861 transitions. Second operand has 39 states, 38 states have (on average 2.710526315789474) internal successors, (103), 39 states have internal predecessors, (103), 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) [2021-11-20 23:00:28,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:00:28,851 INFO L93 Difference]: Finished difference Result 195903 states and 435308 transitions. [2021-11-20 23:00:28,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-20 23:00:28,852 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.710526315789474) internal successors, (103), 39 states have internal predecessors, (103), 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 45 [2021-11-20 23:00:28,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:00:29,281 INFO L225 Difference]: With dead ends: 195903 [2021-11-20 23:00:29,282 INFO L226 Difference]: Without dead ends: 195903 [2021-11-20 23:00:29,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 70 SyntacticMatches, 14 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1992 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=1380, Invalid=4472, Unknown=0, NotChecked=0, Total=5852 [2021-11-20 23:00:29,283 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 473 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 2115 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 744 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:00:29,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 424 Invalid, 2943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2115 Invalid, 0 Unknown, 744 Unchecked, 1.8s Time] [2021-11-20 23:00:29,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195903 states. [2021-11-20 23:00:33,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195903 to 179145. [2021-11-20 23:00:33,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179145 states, 179132 states have (on average 2.2237288703302593) internal successors, (398341), 179144 states have internal predecessors, (398341), 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) [2021-11-20 23:00:34,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179145 states to 179145 states and 398341 transitions. [2021-11-20 23:00:34,798 INFO L78 Accepts]: Start accepts. Automaton has 179145 states and 398341 transitions. Word has length 45 [2021-11-20 23:00:34,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:00:34,798 INFO L470 AbstractCegarLoop]: Abstraction has 179145 states and 398341 transitions. [2021-11-20 23:00:34,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.710526315789474) internal successors, (103), 39 states have internal predecessors, (103), 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) [2021-11-20 23:00:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 179145 states and 398341 transitions. [2021-11-20 23:00:34,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 23:00:34,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:00:34,831 INFO L514 BasicCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1] [2021-11-20 23:00:34,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-20 23:00:35,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:00:35,051 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 23:00:35,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:00:35,051 INFO L85 PathProgramCache]: Analyzing trace with hash -527481466, now seen corresponding path program 8 times [2021-11-20 23:00:35,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:00:35,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286806911] [2021-11-20 23:00:35,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:00:35,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:00:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:00:35,602 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 23:00:35,602 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:00:35,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286806911] [2021-11-20 23:00:35,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286806911] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:00:35,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791382324] [2021-11-20 23:00:35,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:00:35,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:00:35,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:00:35,611 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:00:35,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-20 23:00:35,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-20 23:00:35,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:00:35,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-20 23:00:35,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:00:35,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-11-20 23:00:35,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 23:00:35,932 INFO L354 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2021-11-20 23:00:35,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 11 [2021-11-20 23:00:35,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:35,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-20 23:00:36,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-20 23:00:36,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-20 23:00:36,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-20 23:00:36,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2021-11-20 23:00:36,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 78 [2021-11-20 23:00:36,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:36,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 90 [2021-11-20 23:00:36,767 INFO L354 Elim1Store]: treesize reduction 456, result has 12.0 percent of original size [2021-11-20 23:00:36,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 93 treesize of output 106 [2021-11-20 23:00:38,836 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-20 23:00:38,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:00:42,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:42,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:42,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:42,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:42,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:42,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:42,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:42,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:42,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:43,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 59 [2021-11-20 23:00:43,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 64 treesize of output 57 [2021-11-20 23:00:43,176 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-20 23:00:43,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791382324] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:00:43,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:00:43,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11, 13] total 34 [2021-11-20 23:00:43,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845371925] [2021-11-20 23:00:43,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:00:43,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:00:43,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:00:43,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:00:43,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=963, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 23:00:43,178 INFO L87 Difference]: Start difference. First operand 179145 states and 398341 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 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) [2021-11-20 23:00:45,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:00:45,449 INFO L93 Difference]: Finished difference Result 246117 states and 546117 transitions. [2021-11-20 23:00:45,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:00:45,450 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 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 45 [2021-11-20 23:00:45,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:00:46,498 INFO L225 Difference]: With dead ends: 246117 [2021-11-20 23:00:46,499 INFO L226 Difference]: Without dead ends: 246117 [2021-11-20 23:00:46,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 66 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=236, Invalid=1096, Unknown=0, NotChecked=0, Total=1332 [2021-11-20 23:00:46,499 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 79 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 463 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:00:46,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 39 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 245 Invalid, 0 Unknown, 463 Unchecked, 0.3s Time] [2021-11-20 23:00:46,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246117 states. [2021-11-20 23:00:51,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246117 to 179954. [2021-11-20 23:00:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179954 states, 179941 states have (on average 2.222723003651197) internal successors, (399959), 179953 states have internal predecessors, (399959), 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) [2021-11-20 23:00:52,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179954 states to 179954 states and 399959 transitions. [2021-11-20 23:00:52,148 INFO L78 Accepts]: Start accepts. Automaton has 179954 states and 399959 transitions. Word has length 45 [2021-11-20 23:00:52,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:00:52,149 INFO L470 AbstractCegarLoop]: Abstraction has 179954 states and 399959 transitions. [2021-11-20 23:00:52,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 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) [2021-11-20 23:00:52,149 INFO L276 IsEmpty]: Start isEmpty. Operand 179954 states and 399959 transitions. [2021-11-20 23:00:52,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 23:00:52,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:00:52,153 INFO L514 BasicCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1] [2021-11-20 23:00:52,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-20 23:00:52,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-20 23:00:52,367 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-11-20 23:00:52,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:00:52,367 INFO L85 PathProgramCache]: Analyzing trace with hash -526462186, now seen corresponding path program 9 times [2021-11-20 23:00:52,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:00:52,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717731053] [2021-11-20 23:00:52,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:00:52,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:00:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:00:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 23:00:52,877 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:00:52,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717731053] [2021-11-20 23:00:52,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717731053] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:00:52,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95433191] [2021-11-20 23:00:52,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 23:00:52,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:00:52,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:00:52,878 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:00:52,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55626288-3918-4cf3-82d8-d54ca38fb555/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-20 23:00:53,075 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 23:00:53,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:00:53,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-20 23:00:53,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:00:53,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-20 23:00:53,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:53,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-20 23:00:54,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-20 23:00:54,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-20 23:00:54,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-20 23:00:54,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2021-11-20 23:00:54,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 78 [2021-11-20 23:00:54,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 75 [2021-11-20 23:00:54,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:00:54,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 74 [2021-11-20 23:00:54,840 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 23:00:54,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:00:57,634 INFO L354 Elim1Store]: treesize reduction 1235, result has 4.7 percent of original size [2021-11-20 23:00:57,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 case distinctions, treesize of input 264 treesize of output 73 [2021-11-20 23:00:57,640 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:00:57,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 57 [2021-11-20 23:00:57,655 INFO L354 Elim1Store]: treesize reduction 84, result has 1.2 percent of original size [2021-11-20 23:00:57,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 60 treesize of output 40 [2021-11-20 23:00:57,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,837 INFO L354 Elim1Store]: treesize reduction 635, result has 11.7 percent of original size [2021-11-20 23:00:57,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 266 treesize of output 98 [2021-11-20 23:00:57,847 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:00:57,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 86 treesize of output 78 [2021-11-20 23:00:57,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,868 INFO L354 Elim1Store]: treesize reduction 129, result has 0.8 percent of original size [2021-11-20 23:00:57,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 69 treesize of output 38 [2021-11-20 23:00:57,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:57,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:58,040 INFO L354 Elim1Store]: treesize reduction 645, result has 10.3 percent of original size [2021-11-20 23:00:58,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 266 treesize of output 88 [2021-11-20 23:00:58,052 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:00:58,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 76 treesize of output 70 [2021-11-20 23:00:58,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:58,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:58,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:58,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:58,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:00:58,069 INFO L354 Elim1Store]: treesize reduction 84, result has 1.2 percent of original size [2021-11-20 23:00:58,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 34 [2021-11-20 23:00:58,415 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-20 23:00:58,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95433191] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:00:58,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1075286969] [2021-11-20 23:00:58,416 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-11-20 23:00:58,416 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:00:58,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 15] total 38 [2021-11-20 23:00:58,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730350897] [2021-11-20 23:00:58,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:00:58,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-20 23:00:58,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:00:58,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-20 23:00:58,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1252, Unknown=0, NotChecked=0, Total=1482 [2021-11-20 23:00:58,418 INFO L87 Difference]: Start difference. First operand 179954 states and 399959 transitions. Second operand has 39 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 39 states have internal predecessors, (102), 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)