./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-send-receive-alt.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_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/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_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/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_4fc46f2c-41af-46e5-b205-62e6fac56228/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 d8915194b3978f524e3b82313f6c905aed9b5c215c3d66b411e7857ee0b93981 ............................................................................................................................................ 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_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/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_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/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_4fc46f2c-41af-46e5-b205-62e6fac56228/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 d8915194b3978f524e3b82313f6c905aed9b5c215c3d66b411e7857ee0b93981 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 11:03:08,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:03:08,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:03:08,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:03:08,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:03:08,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:03:08,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:03:08,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:03:08,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:03:08,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:03:08,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:03:08,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:03:08,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:03:08,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:03:08,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:03:08,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:03:08,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:03:08,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:03:08,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:03:08,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:03:08,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:03:08,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:03:08,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:03:08,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:03:08,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:03:08,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:03:08,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:03:08,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:03:08,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:03:08,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:03:08,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:03:08,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:03:08,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:03:08,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:03:08,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:03:08,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:03:08,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:03:08,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:03:08,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:03:08,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:03:08,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:03:08,752 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 11:03:08,798 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:03:08,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:03:08,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:03:08,800 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:03:08,800 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:03:08,801 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:03:08,801 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 11:03:08,801 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:03:08,807 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:03:08,808 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 11:03:08,809 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 11:03:08,809 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:03:08,809 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 11:03:08,809 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 11:03:08,810 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 11:03:08,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:03:08,811 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:03:08,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:03:08,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:03:08,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:03:08,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:03:08,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:03:08,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:03:08,812 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:03:08,812 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:03:08,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:03:08,813 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:03:08,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:03:08,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:03:08,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:03:08,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:03:08,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:03:08,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:03:08,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:03:08,815 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 11:03:08,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 11:03:08,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:03:08,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:03:08,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:03:08,816 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_4fc46f2c-41af-46e5-b205-62e6fac56228/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8915194b3978f524e3b82313f6c905aed9b5c215c3d66b411e7857ee0b93981 [2021-10-24 11:03:09,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:03:09,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:03:09,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:03:09,194 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:03:09,195 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:03:09,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c [2021-10-24 11:03:09,268 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/data/b168a9d18/91d26f56e7d04c8c9f30f3a923a9a685/FLAGb870dea7a [2021-10-24 11:03:09,804 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:03:09,805 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c [2021-10-24 11:03:09,812 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/data/b168a9d18/91d26f56e7d04c8c9f30f3a923a9a685/FLAGb870dea7a [2021-10-24 11:03:10,152 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/data/b168a9d18/91d26f56e7d04c8c9f30f3a923a9a685 [2021-10-24 11:03:10,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:03:10,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:03:10,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:03:10,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:03:10,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:03:10,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:03:10" (1/1) ... [2021-10-24 11:03:10,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f3d4a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:03:10, skipping insertion in model container [2021-10-24 11:03:10,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:03:10" (1/1) ... [2021-10-24 11:03:10,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:03:10,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:03:10,384 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_4fc46f2c-41af-46e5-b205-62e6fac56228/sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c[2650,2663] [2021-10-24 11:03:10,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:03:10,402 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 11:03:10,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24c57033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:03:10, skipping insertion in model container [2021-10-24 11:03:10,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:03:10,403 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 11:03:10,405 INFO L168 Benchmark]: Toolchain (without parser) took 248.06 ms. Allocated memory is still 117.4 MB. Free memory was 83.0 MB in the beginning and 94.3 MB in the end (delta: -11.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 11:03:10,406 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory was 54.2 MB in the beginning and 54.2 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:03:10,407 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.78 ms. Allocated memory is still 117.4 MB. Free memory was 82.7 MB in the beginning and 94.3 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 11:03:10,409 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory was 54.2 MB in the beginning and 54.2 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.78 ms. Allocated memory is still 117.4 MB. Free memory was 82.7 MB in the beginning and 94.3 MB in the end (delta: -11.5 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: 103]: 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 11:03:12,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:03:12,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:03:12,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:03:12,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:03:12,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:03:12,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:03:12,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:03:12,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:03:12,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:03:12,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:03:12,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:03:12,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:03:12,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:03:12,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:03:12,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:03:12,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:03:12,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:03:12,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:03:12,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:03:12,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:03:12,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:03:12,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:03:12,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:03:12,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:03:12,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:03:12,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:03:12,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:03:12,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:03:12,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:03:12,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:03:12,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:03:12,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:03:12,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:03:12,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:03:12,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:03:12,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:03:12,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:03:12,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:03:12,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:03:12,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:03:12,745 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 11:03:12,787 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:03:12,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:03:12,789 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:03:12,789 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:03:12,790 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:03:12,790 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:03:12,790 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:03:12,790 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:03:12,790 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:03:12,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:03:12,793 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:03:12,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:03:12,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:03:12,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:03:12,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:03:12,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:03:12,795 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:03:12,795 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 11:03:12,796 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 11:03:12,797 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:03:12,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:03:12,798 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:03:12,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:03:12,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:03:12,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 11:03:12,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:03:12,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:03:12,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:03:12,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:03:12,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:03:12,807 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 11:03:12,807 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 11:03:12,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:03:12,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:03:12,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:03:12,808 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_4fc46f2c-41af-46e5-b205-62e6fac56228/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8915194b3978f524e3b82313f6c905aed9b5c215c3d66b411e7857ee0b93981 [2021-10-24 11:03:13,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:03:13,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:03:13,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:03:13,203 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:03:13,204 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:03:13,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c [2021-10-24 11:03:13,278 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/data/6ea017c42/1fd36b24298044669c76f2c2cd399f4e/FLAG877e4bdd4 [2021-10-24 11:03:13,813 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:03:13,813 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c [2021-10-24 11:03:13,824 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/data/6ea017c42/1fd36b24298044669c76f2c2cd399f4e/FLAG877e4bdd4 [2021-10-24 11:03:14,203 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/data/6ea017c42/1fd36b24298044669c76f2c2cd399f4e [2021-10-24 11:03:14,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:03:14,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:03:14,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:03:14,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:03:14,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:03:14,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:03:14" (1/1) ... [2021-10-24 11:03:14,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a6cd42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:03:14, skipping insertion in model container [2021-10-24 11:03:14,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:03:14" (1/1) ... [2021-10-24 11:03:14,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:03:14,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:03:14,509 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_4fc46f2c-41af-46e5-b205-62e6fac56228/sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c[2650,2663] [2021-10-24 11:03:14,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:03:14,527 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 11:03:14,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:03:14,571 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_4fc46f2c-41af-46e5-b205-62e6fac56228/sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c[2650,2663] [2021-10-24 11:03:14,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:03:14,603 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:03:14,639 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_4fc46f2c-41af-46e5-b205-62e6fac56228/sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c[2650,2663] [2021-10-24 11:03:14,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:03:14,664 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:03:14,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:03:14 WrapperNode [2021-10-24 11:03:14,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:03:14,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:03:14,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:03:14,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:03:14,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:03:14" (1/1) ... [2021-10-24 11:03:14,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:03:14" (1/1) ... [2021-10-24 11:03:14,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:03:14,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:03:14,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:03:14,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:03:14,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:03:14" (1/1) ... [2021-10-24 11:03:14,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:03:14" (1/1) ... [2021-10-24 11:03:14,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:03:14" (1/1) ... [2021-10-24 11:03:14,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:03:14" (1/1) ... [2021-10-24 11:03:14,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:03:14" (1/1) ... [2021-10-24 11:03:14,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:03:14" (1/1) ... [2021-10-24 11:03:14,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:03:14" (1/1) ... [2021-10-24 11:03:14,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:03:14,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:03:14,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:03:14,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:03:14,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:03:14" (1/1) ... [2021-10-24 11:03:14,822 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:03:14,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:03:14,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:03:14,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:03:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-24 11:03:14,908 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-24 11:03:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-24 11:03:14,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-24 11:03:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 11:03:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:03:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-24 11:03:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-24 11:03:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 11:03:14,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 11:03:14,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:03:14,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:03:14,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 11:03:14,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 11:03:14,914 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 11:03:15,722 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:03:15,723 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-10-24 11:03:15,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:03:15 BoogieIcfgContainer [2021-10-24 11:03:15,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:03:15,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:03:15,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:03:15,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:03:15,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:03:14" (1/3) ... [2021-10-24 11:03:15,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9cacc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:03:15, skipping insertion in model container [2021-10-24 11:03:15,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:03:14" (2/3) ... [2021-10-24 11:03:15,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9cacc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:03:15, skipping insertion in model container [2021-10-24 11:03:15,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:03:15" (3/3) ... [2021-10-24 11:03:15,733 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2021-10-24 11:03:15,738 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-24 11:03:15,738 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:03:15,738 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 11:03:15,739 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-24 11:03:15,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,767 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,767 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,768 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,768 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,768 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,768 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,770 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,770 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,770 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,770 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,771 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,771 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,771 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,771 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,772 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,772 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,773 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,773 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,773 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,775 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,775 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,777 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,777 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,777 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,779 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,779 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,779 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,779 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,780 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,780 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,780 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,780 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,781 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,781 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,781 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,782 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,782 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,782 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,783 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,783 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,783 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,783 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,784 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,784 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,784 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,785 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,785 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,785 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,785 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,786 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,787 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,787 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,787 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,787 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,787 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,788 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,788 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,788 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,789 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,789 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,789 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,792 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,793 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,793 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,793 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~b~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,793 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,794 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,794 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,794 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,795 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,796 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,810 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,811 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,811 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,811 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,811 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,813 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,813 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:03:15,820 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-24 11:03:15,877 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:03:15,883 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 11:03:15,884 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-24 11:03:15,898 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-24 11:03:15,908 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 116 transitions, 248 flow [2021-10-24 11:03:15,911 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 116 transitions, 248 flow [2021-10-24 11:03:15,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 116 transitions, 248 flow [2021-10-24 11:03:15,972 INFO L129 PetriNetUnfolder]: 11/114 cut-off events. [2021-10-24 11:03:15,972 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-24 11:03:15,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 114 events. 11/114 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2021-10-24 11:03:15,978 INFO L116 LiptonReduction]: Number of co-enabled transitions 676 [2021-10-24 11:03:27,060 INFO L131 LiptonReduction]: Checked pairs total: 779 [2021-10-24 11:03:27,060 INFO L133 LiptonReduction]: Total number of compositions: 120 [2021-10-24 11:03:27,067 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 19 transitions, 54 flow [2021-10-24 11:03:27,077 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 27 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:27,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:27,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 11:03:27,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:03:27,085 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:03:27,085 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 11:03:27,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:03:27,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1034382404, now seen corresponding path program 1 times [2021-10-24 11:03:27,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:03:27,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347168770] [2021-10-24 11:03:27,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:27,109 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:03:27,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:03:27,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:03:27,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 11:03:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:27,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 11:03:27,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:27,334 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 11:03:27,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:27,537 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 11:03:27,538 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:03:27,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347168770] [2021-10-24 11:03:27,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347168770] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:03:27,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:03:27,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-24 11:03:27,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324626237] [2021-10-24 11:03:27,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:03:27,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:03:27,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:03:27,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:03:27,566 INFO L87 Difference]: Start difference. First operand has 27 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:27,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:03:27,598 INFO L93 Difference]: Finished difference Result 50 states and 107 transitions. [2021-10-24 11:03:27,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:03:27,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-24 11:03:27,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:03:27,610 INFO L225 Difference]: With dead ends: 50 [2021-10-24 11:03:27,611 INFO L226 Difference]: Without dead ends: 35 [2021-10-24 11:03:27,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:03:27,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-24 11:03:27,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-24 11:03:27,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 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 11:03:27,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 75 transitions. [2021-10-24 11:03:27,652 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 75 transitions. Word has length 13 [2021-10-24 11:03:27,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:03:27,653 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 75 transitions. [2021-10-24 11:03:27,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:27,653 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 75 transitions. [2021-10-24 11:03:27,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-24 11:03:27,656 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:03:27,658 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:03:27,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 11:03:27,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:03:27,870 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 11:03:27,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:03:27,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1326170810, now seen corresponding path program 1 times [2021-10-24 11:03:27,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:03:27,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423611191] [2021-10-24 11:03:27,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:27,873 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:03:27,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:03:27,874 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:03:27,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 11:03:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:27,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 11:03:27,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:28,080 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 11:03:28,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:28,158 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 11:03:28,159 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:03:28,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423611191] [2021-10-24 11:03:28,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423611191] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:03:28,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:03:28,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-24 11:03:28,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298613953] [2021-10-24 11:03:28,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:03:28,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:03:28,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:03:28,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:03:28,166 INFO L87 Difference]: Start difference. First operand 35 states and 75 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:28,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:03:28,188 INFO L93 Difference]: Finished difference Result 29 states and 55 transitions. [2021-10-24 11:03:28,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:03:28,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-24 11:03:28,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:03:28,191 INFO L225 Difference]: With dead ends: 29 [2021-10-24 11:03:28,191 INFO L226 Difference]: Without dead ends: 27 [2021-10-24 11:03:28,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:03:28,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-24 11:03:28,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-24 11:03:28,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 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 11:03:28,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 52 transitions. [2021-10-24 11:03:28,202 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 52 transitions. Word has length 14 [2021-10-24 11:03:28,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:03:28,203 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 52 transitions. [2021-10-24 11:03:28,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:28,203 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 52 transitions. [2021-10-24 11:03:28,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-24 11:03:28,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:03:28,204 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:03:28,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 11:03:28,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:03:28,419 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 11:03:28,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:03:28,424 INFO L82 PathProgramCache]: Analyzing trace with hash 345437017, now seen corresponding path program 1 times [2021-10-24 11:03:28,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:03:28,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188883460] [2021-10-24 11:03:28,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:28,426 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:03:28,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:03:28,427 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:03:28,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 11:03:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:28,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-24 11:03:28,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:28,754 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-24 11:03:28,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-10-24 11:03:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:28,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:29,352 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-24 11:03:29,352 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 198 treesize of output 106 [2021-10-24 11:03:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:41,001 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:03:41,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188883460] [2021-10-24 11:03:41,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188883460] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:03:41,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [415273652] [2021-10-24 11:03:41,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:41,002 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 11:03:41,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 11:03:41,017 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 11:03:41,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-24 11:03:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:41,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 11:03:41,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:41,340 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 11:03:41,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:41,484 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 11:03:41,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [415273652] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:03:41,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-24 11:03:41,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 12 [2021-10-24 11:03:41,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085687048] [2021-10-24 11:03:41,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 11:03:41,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:03:41,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 11:03:41,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-24 11:03:41,487 INFO L87 Difference]: Start difference. First operand 27 states and 52 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:41,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:03:41,589 INFO L93 Difference]: Finished difference Result 35 states and 61 transitions. [2021-10-24 11:03:41,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:03:41,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-24 11:03:41,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:03:41,593 INFO L225 Difference]: With dead ends: 35 [2021-10-24 11:03:41,593 INFO L226 Difference]: Without dead ends: 28 [2021-10-24 11:03:41,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 515.6ms TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-24 11:03:41,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-24 11:03:41,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-24 11:03:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:41,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 53 transitions. [2021-10-24 11:03:41,599 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 53 transitions. Word has length 15 [2021-10-24 11:03:41,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:03:41,600 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 53 transitions. [2021-10-24 11:03:41,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:41,600 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 53 transitions. [2021-10-24 11:03:41,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 11:03:41,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:03:41,601 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:03:41,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-24 11:03:41,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 11:03:42,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:03:42,005 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 11:03:42,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:03:42,006 INFO L82 PathProgramCache]: Analyzing trace with hash -675805499, now seen corresponding path program 1 times [2021-10-24 11:03:42,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:03:42,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331078035] [2021-10-24 11:03:42,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:42,007 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:03:42,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:03:42,008 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:03:42,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 11:03:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:42,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-24 11:03:42,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:42,297 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-24 11:03:42,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-10-24 11:03:42,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 11:03:42,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:42,767 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-24 11:03:42,767 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 198 treesize of output 106 [2021-10-24 11:03:57,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 11:03:57,932 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:03:57,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331078035] [2021-10-24 11:03:57,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331078035] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:03:57,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [35017216] [2021-10-24 11:03:57,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:57,933 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 11:03:57,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 11:03:57,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 11:03:57,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-24 11:03:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:58,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-24 11:03:58,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:58,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:03:58,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:03:58,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:03:58,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:03:58,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:03:58,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:03:58,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2021-10-24 11:04:00,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:04:00,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:04:00,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:04:00,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:04:00,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:04:00,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:04:00,914 INFO L354 Elim1Store]: treesize reduction 923, result has 6.4 percent of original size [2021-10-24 11:04:00,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 78 treesize of output 98 [2021-10-24 11:04:05,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:04:05,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:04:05,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:04:05,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:04:05,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:04:05,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:11,594 WARN L207 SmtUtils]: Spent 3.11 m on a formula simplification. DAG size of input: 347 DAG size of output: 126 [2021-10-24 11:07:11,596 INFO L354 Elim1Store]: treesize reduction 1645, result has 21.1 percent of original size [2021-10-24 11:07:11,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 116 treesize of output 492 [2021-10-24 11:12:26,706 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/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 11:12:26,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/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 11:12:26,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140619541] [2021-10-24 11:12:26,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:12:26,716 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:12:26,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:12:26,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-24 11:12:26,725 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:12:26,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-24 11:12:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:12:27,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-24 11:12:27,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:12:27,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/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 11:12:27,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 11:12:27,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-24 11:12:27,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462743525] [2021-10-24 11:12:27,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 11:12:27,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:12:27,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 11:12:27,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-24 11:12:27,047 INFO L87 Difference]: Start difference. First operand 28 states and 53 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 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 11:12:27,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 11:12:27,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-10-24 11:12:27,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-24 11:12:27,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:12:27,650 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:432) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:275) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:881) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-24 11:12:27,655 INFO L168 Benchmark]: Toolchain (without parser) took 553440.03 ms. Allocated memory was 56.6 MB in the beginning and 109.1 MB in the end (delta: 52.4 MB). Free memory was 33.9 MB in the beginning and 33.7 MB in the end (delta: 277.4 kB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. [2021-10-24 11:12:27,655 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 56.6 MB. Free memory is still 36.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:12:27,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 449.57 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 33.8 MB in the beginning and 54.2 MB in the end (delta: -20.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:12:27,656 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.84 ms. Allocated memory is still 73.4 MB. Free memory was 54.2 MB in the beginning and 52.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:12:27,657 INFO L168 Benchmark]: Boogie Preprocessor took 74.08 ms. Allocated memory is still 73.4 MB. Free memory was 52.4 MB in the beginning and 50.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:12:27,657 INFO L168 Benchmark]: RCFGBuilder took 911.27 ms. Allocated memory is still 73.4 MB. Free memory was 50.5 MB in the beginning and 47.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. [2021-10-24 11:12:27,658 INFO L168 Benchmark]: TraceAbstraction took 551926.70 ms. Allocated memory was 73.4 MB in the beginning and 109.1 MB in the end (delta: 35.7 MB). Free memory was 46.7 MB in the beginning and 33.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 48.9 MB. Max. memory is 16.1 GB. [2021-10-24 11:12:27,661 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 56.6 MB. Free memory is still 36.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 449.57 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 33.8 MB in the beginning and 54.2 MB in the end (delta: -20.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.84 ms. Allocated memory is still 73.4 MB. Free memory was 54.2 MB in the beginning and 52.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.08 ms. Allocated memory is still 73.4 MB. Free memory was 52.4 MB in the beginning and 50.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 911.27 ms. Allocated memory is still 73.4 MB. Free memory was 50.5 MB in the beginning and 47.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 551926.70 ms. Allocated memory was 73.4 MB in the beginning and 109.1 MB in the end (delta: 35.7 MB). Free memory was 46.7 MB in the beginning and 33.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 48.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11149.1ms, 112 PlacesBefore, 23 PlacesAfterwards, 116 TransitionsBefore, 19 TransitionsAfterwards, 676 CoEnabledTransitionPairs, 8 FixpointIterations, 69 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 9 ConcurrentYvCompositions, 8 ChoiceCompositions, 120 TotalNumberOfCompositions, 779 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 775, positive: 758, positive conditional: 0, positive unconditional: 758, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 521, positive: 517, positive conditional: 0, positive unconditional: 517, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 521, positive: 516, positive conditional: 0, positive unconditional: 516, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 187, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 186, negative conditional: 0, negative unconditional: 186, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 775, positive: 241, positive conditional: 0, positive unconditional: 241, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 521, unknown conditional: 0, unknown unconditional: 521] , Statistics on independence cache: Total cache size (in pairs): 22, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc46f2c-41af-46e5-b205-62e6fac56228/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...