./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca902cacc3806160081b315c44f1d7f79e0dd486da477d9c2b4357da911f7e92 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca902cacc3806160081b315c44f1d7f79e0dd486da477d9c2b4357da911f7e92 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:53:36,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:53:36,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:53:36,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:53:36,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:53:36,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:53:36,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:53:36,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:53:36,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:53:36,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:53:36,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:53:36,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:53:36,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:53:36,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:53:36,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:53:36,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:53:36,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:53:36,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:53:36,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:53:36,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:53:36,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:53:36,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:53:36,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:53:36,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:53:36,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:53:36,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:53:36,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:53:36,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:53:36,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:53:36,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:53:36,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:53:36,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:53:36,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:53:36,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:53:36,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:53:36,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:53:36,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:53:36,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:53:36,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:53:36,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:53:36,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:53:36,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:53:36,808 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:53:36,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:53:36,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:53:36,810 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:53:36,810 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:53:36,810 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:53:36,810 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:53:36,810 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:53:36,817 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:53:36,817 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:53:36,818 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:53:36,818 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:53:36,818 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:53:36,819 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:53:36,819 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:53:36,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:53:36,820 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:53:36,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:53:36,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:53:36,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:53:36,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:53:36,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:53:36,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:53:36,821 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:53:36,821 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:53:36,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:53:36,822 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:53:36,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:53:36,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:53:36,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:53:36,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:53:36,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:53:36,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:53:36,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:53:36,825 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:53:36,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:53:36,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:53:36,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:53:36,826 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:53:36,826 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_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca902cacc3806160081b315c44f1d7f79e0dd486da477d9c2b4357da911f7e92 [2021-10-24 09:53:37,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:53:37,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:53:37,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:53:37,172 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:53:37,174 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:53:37,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2021-10-24 09:53:37,272 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/data/e86359062/13e20a6d420b43129111cb8c809c6f65/FLAG2f7230d03 [2021-10-24 09:53:37,825 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:53:37,825 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2021-10-24 09:53:37,838 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/data/e86359062/13e20a6d420b43129111cb8c809c6f65/FLAG2f7230d03 [2021-10-24 09:53:38,156 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/data/e86359062/13e20a6d420b43129111cb8c809c6f65 [2021-10-24 09:53:38,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:53:38,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:53:38,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:53:38,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:53:38,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:53:38,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:53:38" (1/1) ... [2021-10-24 09:53:38,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78fc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:38, skipping insertion in model container [2021-10-24 09:53:38,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:53:38" (1/1) ... [2021-10-24 09:53:38,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:53:38,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:53:38,399 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[2820,2833] [2021-10-24 09:53:38,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:53:38,418 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-24 09:53:38,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@359a39c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:38, skipping insertion in model container [2021-10-24 09:53:38,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:53:38,419 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 09:53:38,421 INFO L168 Benchmark]: Toolchain (without parser) took 259.82 ms. Allocated memory is still 90.2 MB. Free memory was 56.2 MB in the beginning and 66.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:53:38,422 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory was 62.7 MB in the beginning and 62.6 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:53:38,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.56 ms. Allocated memory is still 90.2 MB. Free memory was 56.1 MB in the beginning and 66.3 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:53:38,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory was 62.7 MB in the beginning and 62.6 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 256.56 ms. Allocated memory is still 90.2 MB. Free memory was 56.1 MB in the beginning and 66.3 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 110]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:53:40,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:53:40,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:53:40,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:53:40,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:53:40,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:53:40,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:53:40,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:53:40,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:53:40,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:53:40,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:53:40,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:53:40,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:53:40,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:53:40,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:53:40,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:53:40,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:53:40,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:53:40,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:53:40,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:53:40,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:53:40,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:53:40,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:53:40,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:53:40,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:53:40,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:53:40,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:53:40,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:53:40,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:53:40,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:53:40,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:53:40,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:53:40,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:53:40,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:53:40,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:53:40,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:53:40,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:53:40,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:53:40,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:53:40,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:53:40,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:53:40,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 09:53:40,808 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:53:40,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:53:40,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:53:40,809 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:53:40,810 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:53:40,810 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:53:40,810 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:53:40,810 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:53:40,811 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:53:40,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:53:40,812 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:53:40,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:53:40,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:53:40,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:53:40,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:53:40,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:53:40,813 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:53:40,813 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 09:53:40,813 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 09:53:40,814 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:53:40,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:53:40,814 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:53:40,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:53:40,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:53:40,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 09:53:40,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:53:40,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:53:40,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:53:40,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:53:40,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:53:40,816 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 09:53:40,817 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 09:53:40,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:53:40,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:53:40,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:53:40,818 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca902cacc3806160081b315c44f1d7f79e0dd486da477d9c2b4357da911f7e92 [2021-10-24 09:53:41,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:53:41,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:53:41,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:53:41,261 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:53:41,262 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:53:41,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2021-10-24 09:53:41,337 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/data/2d0caa730/ba1f74a0c70841a6960f77676a7692a6/FLAG1aeb9d462 [2021-10-24 09:53:41,936 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:53:41,936 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2021-10-24 09:53:41,945 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/data/2d0caa730/ba1f74a0c70841a6960f77676a7692a6/FLAG1aeb9d462 [2021-10-24 09:53:42,273 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/data/2d0caa730/ba1f74a0c70841a6960f77676a7692a6 [2021-10-24 09:53:42,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:53:42,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:53:42,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:53:42,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:53:42,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:53:42,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:53:42" (1/1) ... [2021-10-24 09:53:42,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d031f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:42, skipping insertion in model container [2021-10-24 09:53:42,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:53:42" (1/1) ... [2021-10-24 09:53:42,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:53:42,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:53:42,500 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[2820,2833] [2021-10-24 09:53:42,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:53:42,548 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 09:53:42,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:53:42,594 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[2820,2833] [2021-10-24 09:53:42,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:53:42,603 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:53:42,628 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[2820,2833] [2021-10-24 09:53:42,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:53:42,648 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:53:42,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:42 WrapperNode [2021-10-24 09:53:42,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:53:42,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:53:42,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:53:42,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:53:42,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:42" (1/1) ... [2021-10-24 09:53:42,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:42" (1/1) ... [2021-10-24 09:53:42,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:53:42,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:53:42,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:53:42,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:53:42,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:42" (1/1) ... [2021-10-24 09:53:42,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:42" (1/1) ... [2021-10-24 09:53:42,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:42" (1/1) ... [2021-10-24 09:53:42,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:42" (1/1) ... [2021-10-24 09:53:42,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:42" (1/1) ... [2021-10-24 09:53:42,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:42" (1/1) ... [2021-10-24 09:53:42,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:42" (1/1) ... [2021-10-24 09:53:42,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:53:42,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:53:42,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:53:42,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:53:42,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:42" (1/1) ... [2021-10-24 09:53:42,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:53:42,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:53:42,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:53:42,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:53:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 09:53:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:53:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 09:53:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-24 09:53:42,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-24 09:53:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-24 09:53:42,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-24 09:53:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-24 09:53:42,852 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-24 09:53:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 09:53:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:53:42,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:53:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 09:53:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 09:53:42,854 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-24 09:53:43,396 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:53:43,396 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-24 09:53:43,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:53:43 BoogieIcfgContainer [2021-10-24 09:53:43,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:53:43,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:53:43,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:53:43,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:53:43,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:53:42" (1/3) ... [2021-10-24 09:53:43,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794342a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:53:43, skipping insertion in model container [2021-10-24 09:53:43,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:42" (2/3) ... [2021-10-24 09:53:43,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794342a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:53:43, skipping insertion in model container [2021-10-24 09:53:43,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:53:43" (3/3) ... [2021-10-24 09:53:43,407 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2021-10-24 09:53:43,420 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-24 09:53:43,420 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:53:43,420 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:53:43,421 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-24 09:53:43,479 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,480 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,480 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,480 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,481 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,481 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,481 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,482 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,482 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,482 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,482 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,483 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,483 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,484 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,484 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,484 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,484 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,485 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,485 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,485 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,487 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,487 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,487 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,487 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,488 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,488 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,488 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,488 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,489 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,489 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,490 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,490 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,490 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,490 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,491 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,491 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,491 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,491 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,492 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,492 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,492 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,493 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,493 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,493 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,493 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,494 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,494 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,494 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,495 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,495 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,495 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,495 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,496 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,496 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,496 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,496 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,497 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,497 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,497 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,497 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,498 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,498 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,499 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,499 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,502 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,503 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,507 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,507 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,508 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,508 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,508 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,509 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,510 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,511 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,511 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,511 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,512 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,512 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:53:43,520 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-24 09:53:43,590 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:53:43,606 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 [2021-10-24 09:53:43,607 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-24 09:53:43,630 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-24 09:53:43,640 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 183 transitions, 390 flow [2021-10-24 09:53:43,647 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 183 transitions, 390 flow [2021-10-24 09:53:43,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 178 places, 183 transitions, 390 flow [2021-10-24 09:53:43,776 INFO L129 PetriNetUnfolder]: 15/180 cut-off events. [2021-10-24 09:53:43,777 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-24 09:53:43,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 180 events. 15/180 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 166 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2021-10-24 09:53:43,789 INFO L116 LiptonReduction]: Number of co-enabled transitions 2174 [2021-10-24 09:54:02,477 INFO L131 LiptonReduction]: Checked pairs total: 5029 [2021-10-24 09:54:02,477 INFO L133 LiptonReduction]: Total number of compositions: 175 [2021-10-24 09:54:02,487 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 100 flow [2021-10-24 09:54:02,535 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 441 states, 440 states have (on average 3.131818181818182) internal successors, (1378), 440 states have internal predecessors, (1378), 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) [2021-10-24 09:54:02,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 441 states, 440 states have (on average 3.131818181818182) internal successors, (1378), 440 states have internal predecessors, (1378), 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) [2021-10-24 09:54:02,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-24 09:54:02,559 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:02,559 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:02,560 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 09:54:02,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:02,565 INFO L82 PathProgramCache]: Analyzing trace with hash -489514769, now seen corresponding path program 1 times [2021-10-24 09:54:02,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:02,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882214258] [2021-10-24 09:54:02,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:02,579 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:02,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:02,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:02,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 09:54:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:02,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 09:54:02,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:02,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:03,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:03,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882214258] [2021-10-24 09:54:03,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882214258] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:03,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:03,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 09:54:03,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656975700] [2021-10-24 09:54:03,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 09:54:03,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:03,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 09:54:03,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:54:03,127 INFO L87 Difference]: Start difference. First operand has 441 states, 440 states have (on average 3.131818181818182) internal successors, (1378), 440 states have internal predecessors, (1378), 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 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-10-24 09:54:03,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:03,224 INFO L93 Difference]: Finished difference Result 534 states and 1629 transitions. [2021-10-24 09:54:03,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:54:03,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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 23 [2021-10-24 09:54:03,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:03,243 INFO L225 Difference]: With dead ends: 534 [2021-10-24 09:54:03,243 INFO L226 Difference]: Without dead ends: 387 [2021-10-24 09:54:03,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.6ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:54:03,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-10-24 09:54:03,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2021-10-24 09:54:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.0725388601036268) internal successors, (1186), 386 states have internal predecessors, (1186), 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) [2021-10-24 09:54:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1186 transitions. [2021-10-24 09:54:03,313 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1186 transitions. Word has length 23 [2021-10-24 09:54:03,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:03,314 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 1186 transitions. [2021-10-24 09:54:03,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-10-24 09:54:03,315 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1186 transitions. [2021-10-24 09:54:03,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-24 09:54:03,320 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:03,320 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:03,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:03,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:03,532 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 09:54:03,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:03,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1436374237, now seen corresponding path program 2 times [2021-10-24 09:54:03,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:03,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756244200] [2021-10-24 09:54:03,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-24 09:54:03,534 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:03,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:03,536 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:03,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 09:54:03,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-24 09:54:03,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 09:54:03,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-24 09:54:03,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:03,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:03,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:04,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:04,022 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:04,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756244200] [2021-10-24 09:54:04,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756244200] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:04,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:04,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-24 09:54:04,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472390990] [2021-10-24 09:54:04,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:54:04,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:04,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:54:04,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:54:04,025 INFO L87 Difference]: Start difference. First operand 387 states and 1186 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 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) [2021-10-24 09:54:04,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:04,206 INFO L93 Difference]: Finished difference Result 563 states and 1762 transitions. [2021-10-24 09:54:04,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:54:04,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 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 23 [2021-10-24 09:54:04,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:04,218 INFO L225 Difference]: With dead ends: 563 [2021-10-24 09:54:04,222 INFO L226 Difference]: Without dead ends: 563 [2021-10-24 09:54:04,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:54:04,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-24 09:54:04,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 431. [2021-10-24 09:54:04,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 3.1697674418604653) internal successors, (1363), 430 states have internal predecessors, (1363), 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) [2021-10-24 09:54:04,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1363 transitions. [2021-10-24 09:54:04,264 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1363 transitions. Word has length 23 [2021-10-24 09:54:04,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:04,265 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 1363 transitions. [2021-10-24 09:54:04,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 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) [2021-10-24 09:54:04,265 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1363 transitions. [2021-10-24 09:54:04,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-24 09:54:04,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:04,268 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:04,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:04,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:04,481 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 09:54:04,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:04,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1864381997, now seen corresponding path program 1 times [2021-10-24 09:54:04,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:04,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524784451] [2021-10-24 09:54:04,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:04,483 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:04,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:04,484 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:04,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 09:54:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:04,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-24 09:54:04,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:05,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:05,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:05,423 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:05,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524784451] [2021-10-24 09:54:05,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524784451] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:54:05,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [142913812] [2021-10-24 09:54:05,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:05,424 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 09:54:05,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 09:54:05,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 09:54:05,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-24 09:54:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:05,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 09:54:05,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:05,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:05,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:05,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [142913812] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:05,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-24 09:54:05,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 13 [2021-10-24 09:54:05,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516274668] [2021-10-24 09:54:05,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:54:05,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:05,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:54:05,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-24 09:54:05,984 INFO L87 Difference]: Start difference. First operand 431 states and 1363 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-10-24 09:54:06,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:06,107 INFO L93 Difference]: Finished difference Result 537 states and 1608 transitions. [2021-10-24 09:54:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:54:06,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-24 09:54:06,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:06,112 INFO L225 Difference]: With dead ends: 537 [2021-10-24 09:54:06,113 INFO L226 Difference]: Without dead ends: 432 [2021-10-24 09:54:06,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 225.5ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-24 09:54:06,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-10-24 09:54:06,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2021-10-24 09:54:06,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 3.1647331786542923) internal successors, (1364), 431 states have internal predecessors, (1364), 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) [2021-10-24 09:54:06,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1364 transitions. [2021-10-24 09:54:06,147 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1364 transitions. Word has length 26 [2021-10-24 09:54:06,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:06,147 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 1364 transitions. [2021-10-24 09:54:06,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-10-24 09:54:06,147 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1364 transitions. [2021-10-24 09:54:06,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 09:54:06,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:06,150 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:06,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-10-24 09:54:06,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:06,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:06,565 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 09:54:06,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:06,566 INFO L82 PathProgramCache]: Analyzing trace with hash -150463482, now seen corresponding path program 1 times [2021-10-24 09:54:06,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:06,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411497378] [2021-10-24 09:54:06,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:06,567 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:06,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:06,568 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:06,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 09:54:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:06,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-24 09:54:06,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:54:07,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:07,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:54:07,519 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:07,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411497378] [2021-10-24 09:54:07,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411497378] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:54:07,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2120736687] [2021-10-24 09:54:07,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:07,520 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 09:54:07,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 09:54:07,523 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 09:54:07,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-24 09:54:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:07,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 09:54:07,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:08,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:54:08,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:54:08,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2120736687] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:54:08,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126048995] [2021-10-24 09:54:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:08,413 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:54:08,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:54:08,421 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:54:08,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-24 09:54:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:08,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 09:54:08,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:08,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:54:08,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:09,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:54:09,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126048995] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-24 09:54:09,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2021-10-24 09:54:09,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 4, 4, 4] total 17 [2021-10-24 09:54:09,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307831243] [2021-10-24 09:54:09,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:54:09,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:09,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:54:09,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-10-24 09:54:09,225 INFO L87 Difference]: Start difference. First operand 432 states and 1364 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:09,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:09,349 INFO L93 Difference]: Finished difference Result 580 states and 1826 transitions. [2021-10-24 09:54:09,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:54:09,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-24 09:54:09,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:09,355 INFO L225 Difference]: With dead ends: 580 [2021-10-24 09:54:09,355 INFO L226 Difference]: Without dead ends: 580 [2021-10-24 09:54:09,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 302.1ms TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-10-24 09:54:09,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-10-24 09:54:09,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 490. [2021-10-24 09:54:09,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 3.3333333333333335) internal successors, (1630), 489 states have internal predecessors, (1630), 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) [2021-10-24 09:54:09,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1630 transitions. [2021-10-24 09:54:09,378 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1630 transitions. Word has length 27 [2021-10-24 09:54:09,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:09,379 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 1630 transitions. [2021-10-24 09:54:09,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:09,379 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1630 transitions. [2021-10-24 09:54:09,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 09:54:09,381 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:09,382 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:09,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:09,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:09,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-24 09:54:09,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:54:09,986 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 09:54:09,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:09,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1093750078, now seen corresponding path program 2 times [2021-10-24 09:54:09,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:09,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006067293] [2021-10-24 09:54:09,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-24 09:54:09,987 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:09,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:09,988 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:09,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-24 09:54:10,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-24 09:54:10,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 09:54:10,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 09:54:10,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:54:10,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:54:10,596 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:10,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006067293] [2021-10-24 09:54:10,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006067293] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:10,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:10,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-24 09:54:10,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826855105] [2021-10-24 09:54:10,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:54:10,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:10,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:54:10,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:54:10,599 INFO L87 Difference]: Start difference. First operand 490 states and 1630 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 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) [2021-10-24 09:54:10,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:10,721 INFO L93 Difference]: Finished difference Result 664 states and 2158 transitions. [2021-10-24 09:54:10,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:54:10,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 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 [2021-10-24 09:54:10,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:10,729 INFO L225 Difference]: With dead ends: 664 [2021-10-24 09:54:10,729 INFO L226 Difference]: Without dead ends: 664 [2021-10-24 09:54:10,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 40.4ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:54:10,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-10-24 09:54:10,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 490. [2021-10-24 09:54:10,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 3.2842535787321063) internal successors, (1606), 489 states have internal predecessors, (1606), 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) [2021-10-24 09:54:10,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1606 transitions. [2021-10-24 09:54:10,771 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1606 transitions. Word has length 27 [2021-10-24 09:54:10,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:10,771 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 1606 transitions. [2021-10-24 09:54:10,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 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) [2021-10-24 09:54:10,772 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1606 transitions. [2021-10-24 09:54:10,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-24 09:54:10,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:10,775 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:10,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:10,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:10,989 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 09:54:10,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:10,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1005833107, now seen corresponding path program 1 times [2021-10-24 09:54:10,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:10,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934936195] [2021-10-24 09:54:10,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:10,990 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:10,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:10,991 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:10,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 09:54:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:11,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 09:54:11,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:11,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:54:11,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:11,767 INFO L354 Elim1Store]: treesize reduction 395, result has 1.3 percent of original size [2021-10-24 09:54:11,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 73 treesize of output 22 [2021-10-24 09:54:11,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:54:11,810 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:11,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934936195] [2021-10-24 09:54:11,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934936195] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:11,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:11,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-24 09:54:11,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138683453] [2021-10-24 09:54:11,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-24 09:54:11,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:11,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-24 09:54:11,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-24 09:54:11,813 INFO L87 Difference]: Start difference. First operand 490 states and 1606 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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) [2021-10-24 09:54:12,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:12,653 INFO L93 Difference]: Finished difference Result 1082 states and 3473 transitions. [2021-10-24 09:54:12,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 09:54:12,654 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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 30 [2021-10-24 09:54:12,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:12,664 INFO L225 Difference]: With dead ends: 1082 [2021-10-24 09:54:12,664 INFO L226 Difference]: Without dead ends: 1082 [2021-10-24 09:54:12,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 249.4ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-10-24 09:54:12,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2021-10-24 09:54:12,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 637. [2021-10-24 09:54:12,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 3.2547169811320753) internal successors, (2070), 636 states have internal predecessors, (2070), 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) [2021-10-24 09:54:12,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 2070 transitions. [2021-10-24 09:54:12,699 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 2070 transitions. Word has length 30 [2021-10-24 09:54:12,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:12,700 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 2070 transitions. [2021-10-24 09:54:12,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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) [2021-10-24 09:54:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 2070 transitions. [2021-10-24 09:54:12,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-24 09:54:12,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:12,703 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:12,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:12,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:12,916 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 09:54:12,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:12,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1420482579, now seen corresponding path program 2 times [2021-10-24 09:54:12,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:12,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276485978] [2021-10-24 09:54:12,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-24 09:54:12,917 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:12,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:12,918 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:12,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-24 09:54:13,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-24 09:54:13,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 09:54:13,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-24 09:54:13,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:13,383 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 56 treesize of output 54 [2021-10-24 09:54:13,541 INFO L354 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2021-10-24 09:54:13,541 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 3 case distinctions, treesize of input 35 treesize of output 43 [2021-10-24 09:57:06,196 WARN L207 SmtUtils]: Spent 2.73 m on a formula simplification. DAG size of input: 371 DAG size of output: 123 [2021-10-24 09:57:06,198 INFO L354 Elim1Store]: treesize reduction 1732, result has 19.5 percent of original size [2021-10-24 09:57:06,198 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 39 case distinctions, treesize of input 108 treesize of output 463 [2021-10-24 10:00:36,046 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-24 10:00:36,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-24 10:00:36,048 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:00:36,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276485978] [2021-10-24 10:00:36,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-24 10:00:36,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [279246844] [2021-10-24 10:00:36,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-24 10:00:36,049 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:00:36,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:00:36,059 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:00:36,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-24 10:00:36,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-24 10:00:36,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 10:00:36,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-24 10:00:36,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:00:36,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-24 10:00:36,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560146107] [2021-10-24 10:00:36,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-24 10:00:36,898 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:00:36,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:00:36,903 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:00:36,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-24 10:00:37,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-24 10:00:37,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 10:00:37,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 10:00:37,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:00:37,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-24 10:00:37,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:00:37,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-24 10:00:37,357 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-24 10:00:37,357 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-24 10:00:37,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:00:37,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-24 10:00:37,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-24 10:00:37,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-24 10:00:37,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-24 10:00:37,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-24 10:00:37,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-24 10:00:37,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3f057a8-09cf-4894-b8f8-7953329ddb9e/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt [2021-10-24 10:00:37,971 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-24 10:00:37,971 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:00:38,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:00:38 BasicIcfg [2021-10-24 10:00:38,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:00:38,007 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:00:38,007 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:00:38,007 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:00:38,008 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:53:43" (3/4) ... [2021-10-24 10:00:38,010 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:00:38,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:00:38,012 INFO L168 Benchmark]: Toolchain (without parser) took 415732.53 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 34.9 MB in the beginning and 51.4 MB in the end (delta: -16.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:00:38,012 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 56.6 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:00:38,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.54 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 36.8 MB in the end (delta: -2.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:00:38,013 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.97 ms. Allocated memory is still 56.6 MB. Free memory was 36.7 MB in the beginning and 34.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:00:38,014 INFO L168 Benchmark]: Boogie Preprocessor took 73.66 ms. Allocated memory is still 56.6 MB. Free memory was 34.9 MB in the beginning and 33.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:00:38,014 INFO L168 Benchmark]: RCFGBuilder took 631.00 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 33.0 MB in the beginning and 50.6 MB in the end (delta: -17.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:00:38,018 INFO L168 Benchmark]: TraceAbstraction took 414605.83 ms. Allocated memory was 77.6 MB in the beginning and 100.7 MB in the end (delta: 23.1 MB). Free memory was 50.1 MB in the beginning and 51.4 MB in the end (delta: -1.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:00:38,018 INFO L168 Benchmark]: Witness Printer took 3.81 ms. Allocated memory is still 100.7 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:00:38,021 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 56.6 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 367.54 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 36.8 MB in the end (delta: -2.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.97 ms. Allocated memory is still 56.6 MB. Free memory was 36.7 MB in the beginning and 34.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.66 ms. Allocated memory is still 56.6 MB. Free memory was 34.9 MB in the beginning and 33.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 631.00 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 33.0 MB in the beginning and 50.6 MB in the end (delta: -17.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 414605.83 ms. Allocated memory was 77.6 MB in the beginning and 100.7 MB in the end (delta: 23.1 MB). Free memory was 50.1 MB in the beginning and 51.4 MB in the end (delta: -1.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.81 ms. Allocated memory is still 100.7 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18830.5ms, 178 PlacesBefore, 43 PlacesAfterwards, 183 TransitionsBefore, 38 TransitionsAfterwards, 2174 CoEnabledTransitionPairs, 7 FixpointIterations, 105 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 4 ConcurrentYvCompositions, 10 ChoiceCompositions, 175 TotalNumberOfCompositions, 5029 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3239, positive: 3064, positive conditional: 0, positive unconditional: 3064, negative: 175, negative conditional: 0, negative unconditional: 175, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1547, positive: 1493, positive conditional: 0, positive unconditional: 1493, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1547, positive: 1493, positive conditional: 0, positive unconditional: 1493, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 54, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1102, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1102, negative conditional: 0, negative unconditional: 1102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3239, positive: 1571, positive conditional: 0, positive unconditional: 1571, negative: 121, negative conditional: 0, negative unconditional: 121, unknown: 1547, unknown conditional: 0, unknown unconditional: 1547] , Statistics on independence cache: Total cache size (in pairs): 214, Positive cache size: 194, Positive conditional cache size: 0, Positive unconditional cache size: 194, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 101]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L41] 0 int* A; [L42] 0 int min, max, i, j, N; [L43] 0 _Bool v_assert, b1, b2; [L76] 0 pthread_t t1, t2, t3; [L79] 0 min = __VERIFIER_nondet_int() [L80] 0 max = __VERIFIER_nondet_int() [L81] 0 i = __VERIFIER_nondet_int() [L82] 0 j = __VERIFIER_nondet_int() [L83] 0 N = __VERIFIER_nondet_int() [L38] COND FALSE 0 !(!cond) [L85] 0 b1 = __VERIFIER_nondet_bool() [L86] 0 b2 = __VERIFIER_nondet_bool() [L87] 0 v_assert = __VERIFIER_nondet_bool() [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L110] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L111] 0 int i = 0; [L111] COND TRUE 0 i < size [L112] 0 arr[i] = __VERIFIER_nondet_int() [L111] 0 i++ [L111] COND FALSE 0 !(i < size) [L114] 0 return arr; [L88] 0 A = create_fresh_int_array(N) [L91] 0 ( i == j && i == 0 ) && ( min == max && min == A[0] ) [L38] COND TRUE 0 !cond [L93] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L48] EXPR 1 A[0] [L94] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) [L48] 1 min = A[0] [L49] 1 b1 = 1 [L95] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) [L50] COND TRUE 1 ( ( 0 <= i ) && ( i < N ) ) [L51] EXPR 1 A[i] [L51] EXPR 1 ( min < A[i] ) ? min : A[i] [L51] 1 min = ( min < A[i] ) ? min : A[i] [L52] 1 i = ( i + 1 ) [L50] COND FALSE 1 !(( ( 0 <= i ) && ( i < N ) )) [L55] 1 return 0; [L59] EXPR 2 A[0] [L59] 2 max = A[0] [L60] 2 b2 = 1 [L70] 3 v_assert = ( !b1 || !b2 || ( min <= max ) ) [L72] 3 return 0; [L61] COND TRUE 2 ( ( 0 <= j ) && ( j < N ) ) [L62] EXPR 2 A[j] [L62] EXPR 2 ( max > A[j] ) ? max : A[j] [L62] 2 max = ( max > A[j] ) ? max : A[j] [L63] 2 j = ( j + 1 ) [L61] COND FALSE 2 !(( ( 0 <= j ) && ( j < N ) )) [L66] 2 return 0; [L96] 0 \read(t1) [L96] FCALL, JOIN 1 pthread_join(t1, 0) [L97] 0 \read(t2) [L97] FCALL, JOIN 2 pthread_join(t2, 0) [L98] 0 \read(t3) [L98] FCALL, JOIN 3 pthread_join(t3, 0) [L38] COND FALSE 0 !(!cond) [L101] 0 reach_error() - UnprovableResult [Line: 94]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 95]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 93]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 212 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 414380.3ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 41.6ms, AutomataDifference: 1577.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18927.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 215 SDtfs, 503 SDslu, 379 SDs, 0 SdLazy, 283 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1002.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 464 GetRequests, 406 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 886.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=637occurred in iteration=6, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 226.1ms AutomataMinimizationTime, 6 MinimizatonAttempts, 841 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 157.4ms SsaConstructionTime, 597.4ms SatisfiabilityAnalysisTime, 4506.0ms InterpolantComputationTime, 236 NumberOfCodeBlocks, 232 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 454 ConstructedInterpolants, 0 QuantifiedInterpolants, 2837 SizeOfPredicates, 80 NumberOfNonLiveVariables, 952 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 19/26 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...