./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8 --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 51759f83c5c8a18147c4d3cfcc22a931ec36cde5 ............................................................................................................................................ 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_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8 --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 51759f83c5c8a18147c4d3cfcc22a931ec36cde5 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:26:05,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:26:05,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:26:05,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:26:05,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:26:05,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:26:05,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:26:05,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:26:05,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:26:05,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:26:05,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:26:05,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:26:05,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:26:05,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:26:05,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:26:05,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:26:05,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:26:05,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:26:05,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:26:05,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:26:05,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:26:05,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:26:05,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:26:05,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:26:05,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:26:05,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:26:05,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:26:05,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:26:05,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:26:05,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:26:05,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:26:05,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:26:05,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:26:05,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:26:05,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:26:05,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:26:05,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:26:05,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:26:05,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:26:05,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:26:05,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:26:05,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:26:05,742 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:26:05,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:26:05,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:26:05,744 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:26:05,744 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:26:05,744 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:26:05,745 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:26:05,745 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:26:05,745 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:26:05,745 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:26:05,745 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:26:05,746 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:26:05,746 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:26:05,746 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:26:05,746 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:26:05,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:26:05,747 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:26:05,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:26:05,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:26:05,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:26:05,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:26:05,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:26:05,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:26:05,749 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:26:05,749 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:26:05,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:26:05,750 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:26:05,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:26:05,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:26:05,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:26:05,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:26:05,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:26:05,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:26:05,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:26:05,752 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:26:05,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:26:05,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:26:05,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:26:05,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:26:05,753 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_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51759f83c5c8a18147c4d3cfcc22a931ec36cde5 [2021-10-13 07:26:06,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:26:06,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:26:06,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:26:06,081 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:26:06,081 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:26:06,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c [2021-10-13 07:26:06,153 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/data/53a15ccb1/be1c830480d642edbc66a30525f5bdc1/FLAG16537bc9a [2021-10-13 07:26:06,787 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:26:06,788 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c [2021-10-13 07:26:06,803 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/data/53a15ccb1/be1c830480d642edbc66a30525f5bdc1/FLAG16537bc9a [2021-10-13 07:26:07,058 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/data/53a15ccb1/be1c830480d642edbc66a30525f5bdc1 [2021-10-13 07:26:07,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:26:07,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:26:07,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:26:07,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:26:07,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:26:07,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:26:07" (1/1) ... [2021-10-13 07:26:07,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d0c91e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:07, skipping insertion in model container [2021-10-13 07:26:07,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:26:07" (1/1) ... [2021-10-13 07:26:07,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:26:07,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:26:07,440 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_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c[18106,18119] [2021-10-13 07:26:07,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:26:07,454 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) [2021-10-13 07:26:07,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d026a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:07, skipping insertion in model container [2021-10-13 07:26:07,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:26:07,455 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 07:26:07,457 INFO L168 Benchmark]: Toolchain (without parser) took 393.96 ms. Allocated memory is still 94.4 MB. Free memory was 54.7 MB in the beginning and 67.4 MB in the end (delta: -12.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:26:07,458 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 72.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:26:07,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.14 ms. Allocated memory is still 94.4 MB. Free memory was 54.5 MB in the beginning and 67.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:26:07,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 72.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 382.14 ms. Allocated memory is still 94.4 MB. Free memory was 54.5 MB in the beginning and 67.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 203]: 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-4e77c04 [2021-10-13 07:26:09,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:26:09,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:26:09,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:26:09,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:26:09,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:26:09,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:26:09,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:26:09,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:26:09,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:26:09,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:26:09,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:26:09,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:26:09,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:26:09,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:26:09,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:26:09,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:26:09,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:26:09,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:26:09,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:26:09,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:26:09,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:26:09,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:26:09,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:26:09,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:26:09,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:26:09,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:26:09,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:26:09,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:26:09,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:26:09,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:26:09,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:26:09,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:26:09,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:26:09,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:26:09,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:26:09,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:26:09,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:26:09,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:26:09,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:26:09,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:26:09,780 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:26:09,827 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:26:09,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:26:09,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:26:09,829 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:26:09,829 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:26:09,829 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:26:09,829 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:26:09,830 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:26:09,830 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:26:09,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:26:09,832 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:26:09,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:26:09,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:26:09,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:26:09,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:26:09,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:26:09,834 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:26:09,834 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:26:09,834 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:26:09,835 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:26:09,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:26:09,835 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:26:09,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:26:09,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:26:09,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:26:09,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:26:09,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:26:09,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:26:09,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:26:09,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:26:09,837 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:26:09,838 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:26:09,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:26:09,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:26:09,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:26:09,839 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_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51759f83c5c8a18147c4d3cfcc22a931ec36cde5 [2021-10-13 07:26:10,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:26:10,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:26:10,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:26:10,266 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:26:10,267 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:26:10,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c [2021-10-13 07:26:10,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/data/ce0e1e4f9/16a9bb2e50f24c4b9957e51572be873d/FLAG77e8a6880 [2021-10-13 07:26:10,906 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:26:10,907 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c [2021-10-13 07:26:10,925 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/data/ce0e1e4f9/16a9bb2e50f24c4b9957e51572be873d/FLAG77e8a6880 [2021-10-13 07:26:11,183 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/data/ce0e1e4f9/16a9bb2e50f24c4b9957e51572be873d [2021-10-13 07:26:11,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:26:11,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:26:11,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:26:11,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:26:11,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:26:11,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:26:11" (1/1) ... [2021-10-13 07:26:11,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f2d711f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:11, skipping insertion in model container [2021-10-13 07:26:11,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:26:11" (1/1) ... [2021-10-13 07:26:11,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:26:11,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:26:11,660 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_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c[18106,18119] [2021-10-13 07:26:11,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:26:11,685 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 07:26:11,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:26:11,790 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_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c[18106,18119] [2021-10-13 07:26:11,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:26:11,811 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:26:11,908 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_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c[18106,18119] [2021-10-13 07:26:11,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:26:11,929 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:26:11,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:11 WrapperNode [2021-10-13 07:26:11,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:26:11,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:26:11,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:26:11,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:26:11,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:11" (1/1) ... [2021-10-13 07:26:11,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:11" (1/1) ... [2021-10-13 07:26:11,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:26:11,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:26:11,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:26:11,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:26:12,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:11" (1/1) ... [2021-10-13 07:26:12,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:11" (1/1) ... [2021-10-13 07:26:12,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:11" (1/1) ... [2021-10-13 07:26:12,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:11" (1/1) ... [2021-10-13 07:26:12,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:11" (1/1) ... [2021-10-13 07:26:12,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:11" (1/1) ... [2021-10-13 07:26:12,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:11" (1/1) ... [2021-10-13 07:26:12,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:26:12,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:26:12,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:26:12,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:26:12,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:11" (1/1) ... [2021-10-13 07:26:12,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:26:12,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:26:12,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:26:12,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:26:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:26:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:26:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:26:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:26:14,436 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:26:14,436 INFO L299 CfgBuilder]: Removed 156 assume(true) statements. [2021-10-13 07:26:14,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:26:14 BoogieIcfgContainer [2021-10-13 07:26:14,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:26:14,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:26:14,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:26:14,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:26:14,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:26:11" (1/3) ... [2021-10-13 07:26:14,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddc44e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:26:14, skipping insertion in model container [2021-10-13 07:26:14,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:11" (2/3) ... [2021-10-13 07:26:14,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddc44e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:26:14, skipping insertion in model container [2021-10-13 07:26:14,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:26:14" (3/3) ... [2021-10-13 07:26:14,448 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2021-10-13 07:26:14,453 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:26:14,453 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 07:26:14,499 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:26:14,505 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, mConcurrency=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 [2021-10-13 07:26:14,506 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 07:26:14,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 113 states have (on average 1.5663716814159292) internal successors, (177), 116 states have internal predecessors, (177), 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) [2021-10-13 07:26:14,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:26:14,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:14,530 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:14,530 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:14,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:14,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1641629540, now seen corresponding path program 1 times [2021-10-13 07:26:14,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:14,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090801499] [2021-10-13 07:26:14,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:14,551 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:14,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:14,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:14,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:26:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:14,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:26:14,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:14,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:14,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:14,867 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:14,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090801499] [2021-10-13 07:26:14,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090801499] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:14,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:14,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:26:14,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102605122] [2021-10-13 07:26:14,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:26:14,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:14,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:26:14,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:26:14,890 INFO L87 Difference]: Start difference. First operand has 117 states, 113 states have (on average 1.5663716814159292) internal successors, (177), 116 states have internal predecessors, (177), 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 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-10-13 07:26:14,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:14,920 INFO L93 Difference]: Finished difference Result 228 states and 347 transitions. [2021-10-13 07:26:14,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:26:14,921 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2021-10-13 07:26:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:14,938 INFO L225 Difference]: With dead ends: 228 [2021-10-13 07:26:14,938 INFO L226 Difference]: Without dead ends: 113 [2021-10-13 07:26:14,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:26:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-13 07:26:14,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-10-13 07:26:14,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 110 states have (on average 1.5) internal successors, (165), 112 states have internal predecessors, (165), 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) [2021-10-13 07:26:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2021-10-13 07:26:14,985 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 16 [2021-10-13 07:26:14,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:14,986 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2021-10-13 07:26:14,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-10-13 07:26:14,986 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2021-10-13 07:26:14,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:26:14,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:14,988 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:15,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:15,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:15,201 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:15,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:15,202 INFO L82 PathProgramCache]: Analyzing trace with hash 594872643, now seen corresponding path program 1 times [2021-10-13 07:26:15,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:15,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198591170] [2021-10-13 07:26:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:15,204 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:15,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:15,205 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:15,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:26:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:15,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:15,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:15,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:15,547 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:15,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198591170] [2021-10-13 07:26:15,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198591170] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:15,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:15,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:26:15,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565378337] [2021-10-13 07:26:15,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:15,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:15,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:15,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:15,557 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:15,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:15,588 INFO L93 Difference]: Finished difference Result 113 states and 165 transitions. [2021-10-13 07:26:15,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:26:15,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 07:26:15,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:15,590 INFO L225 Difference]: With dead ends: 113 [2021-10-13 07:26:15,590 INFO L226 Difference]: Without dead ends: 47 [2021-10-13 07:26:15,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:15,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-13 07:26:15,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-13 07:26:15,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 46 states have internal predecessors, (68), 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) [2021-10-13 07:26:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2021-10-13 07:26:15,603 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2021-10-13 07:26:15,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:15,604 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2021-10-13 07:26:15,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:15,604 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2021-10-13 07:26:15,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:26:15,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:15,605 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:15,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:15,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:15,806 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:15,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:15,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1404483435, now seen corresponding path program 1 times [2021-10-13 07:26:15,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:15,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709495091] [2021-10-13 07:26:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:15,808 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:15,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:15,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:15,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:26:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:16,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:16,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:16,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:16,259 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:16,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709495091] [2021-10-13 07:26:16,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709495091] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:16,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:16,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:26:16,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14720615] [2021-10-13 07:26:16,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:16,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:16,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:16,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:16,266 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:16,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:16,285 INFO L93 Difference]: Finished difference Result 88 states and 130 transitions. [2021-10-13 07:26:16,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:26:16,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 07:26:16,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:16,289 INFO L225 Difference]: With dead ends: 88 [2021-10-13 07:26:16,289 INFO L226 Difference]: Without dead ends: 47 [2021-10-13 07:26:16,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:16,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-13 07:26:16,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-13 07:26:16,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 46 states have internal predecessors, (67), 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) [2021-10-13 07:26:16,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 67 transitions. [2021-10-13 07:26:16,305 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 67 transitions. Word has length 22 [2021-10-13 07:26:16,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:16,305 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 67 transitions. [2021-10-13 07:26:16,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:16,306 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 67 transitions. [2021-10-13 07:26:16,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 07:26:16,308 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:16,309 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:16,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:16,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:16,527 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:16,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:16,528 INFO L82 PathProgramCache]: Analyzing trace with hash -764351347, now seen corresponding path program 1 times [2021-10-13 07:26:16,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:16,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248416353] [2021-10-13 07:26:16,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:16,534 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:16,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:16,536 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:16,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:26:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:16,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:16,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:16,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:16,850 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:16,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248416353] [2021-10-13 07:26:16,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248416353] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:16,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:16,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:26:16,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076141603] [2021-10-13 07:26:16,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:26:16,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:16,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:26:16,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:16,854 INFO L87 Difference]: Start difference. First operand 47 states and 67 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-13 07:26:16,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:16,906 INFO L93 Difference]: Finished difference Result 109 states and 158 transitions. [2021-10-13 07:26:16,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:26:16,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-10-13 07:26:16,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:16,907 INFO L225 Difference]: With dead ends: 109 [2021-10-13 07:26:16,907 INFO L226 Difference]: Without dead ends: 68 [2021-10-13 07:26:16,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:16,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-13 07:26:16,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2021-10-13 07:26:16,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 65 states have internal predecessors, (93), 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) [2021-10-13 07:26:16,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2021-10-13 07:26:16,916 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 24 [2021-10-13 07:26:16,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:16,917 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2021-10-13 07:26:16,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-13 07:26:16,917 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2021-10-13 07:26:16,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 07:26:16,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:16,918 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:16,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:17,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:17,131 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:17,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:17,132 INFO L82 PathProgramCache]: Analyzing trace with hash -805303330, now seen corresponding path program 1 times [2021-10-13 07:26:17,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:17,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345121592] [2021-10-13 07:26:17,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:17,133 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:17,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:17,134 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:17,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:26:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:17,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:26:17,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:17,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:17,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:17,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:17,560 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:17,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345121592] [2021-10-13 07:26:17,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345121592] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:17,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:17,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 07:26:17,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615151392] [2021-10-13 07:26:17,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:26:17,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:17,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:26:17,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:26:17,567 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2021-10-13 07:26:17,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:17,654 INFO L93 Difference]: Finished difference Result 175 states and 245 transitions. [2021-10-13 07:26:17,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:26:17,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-13 07:26:17,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:17,656 INFO L225 Difference]: With dead ends: 175 [2021-10-13 07:26:17,656 INFO L226 Difference]: Without dead ends: 115 [2021-10-13 07:26:17,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:26:17,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-13 07:26:17,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 72. [2021-10-13 07:26:17,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.3943661971830985) internal successors, (99), 71 states have internal predecessors, (99), 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) [2021-10-13 07:26:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 99 transitions. [2021-10-13 07:26:17,676 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 99 transitions. Word has length 30 [2021-10-13 07:26:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:17,678 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 99 transitions. [2021-10-13 07:26:17,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2021-10-13 07:26:17,678 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 99 transitions. [2021-10-13 07:26:17,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 07:26:17,684 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:17,685 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:17,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:17,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:17,909 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:17,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:17,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1857207713, now seen corresponding path program 1 times [2021-10-13 07:26:17,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:17,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626744730] [2021-10-13 07:26:17,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:17,911 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:17,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:17,921 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:17,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:26:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:18,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:26:18,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:18,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:18,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:18,401 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:18,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626744730] [2021-10-13 07:26:18,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626744730] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:18,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:18,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:26:18,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070174490] [2021-10-13 07:26:18,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:26:18,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:18,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:26:18,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:26:18,404 INFO L87 Difference]: Start difference. First operand 72 states and 99 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2021-10-13 07:26:18,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:18,490 INFO L93 Difference]: Finished difference Result 382 states and 538 transitions. [2021-10-13 07:26:18,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:26:18,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-13 07:26:18,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:18,493 INFO L225 Difference]: With dead ends: 382 [2021-10-13 07:26:18,493 INFO L226 Difference]: Without dead ends: 316 [2021-10-13 07:26:18,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 38.9ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:26:18,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-13 07:26:18,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 132. [2021-10-13 07:26:18,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.381679389312977) internal successors, (181), 131 states have internal predecessors, (181), 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) [2021-10-13 07:26:18,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 181 transitions. [2021-10-13 07:26:18,514 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 181 transitions. Word has length 30 [2021-10-13 07:26:18,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:18,514 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 181 transitions. [2021-10-13 07:26:18,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2021-10-13 07:26:18,515 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 181 transitions. [2021-10-13 07:26:18,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 07:26:18,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:18,516 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:18,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:18,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:18,729 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:18,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:18,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1765991081, now seen corresponding path program 1 times [2021-10-13 07:26:18,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:18,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23305336] [2021-10-13 07:26:18,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:18,731 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:18,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:18,732 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:18,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:26:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:18,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:26:18,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:19,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:19,156 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:19,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23305336] [2021-10-13 07:26:19,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23305336] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:19,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:19,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 07:26:19,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721573070] [2021-10-13 07:26:19,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:26:19,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:19,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:26:19,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:26:19,159 INFO L87 Difference]: Start difference. First operand 132 states and 181 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:19,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:19,328 INFO L93 Difference]: Finished difference Result 378 states and 520 transitions. [2021-10-13 07:26:19,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:26:19,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-13 07:26:19,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:19,335 INFO L225 Difference]: With dead ends: 378 [2021-10-13 07:26:19,336 INFO L226 Difference]: Without dead ends: 376 [2021-10-13 07:26:19,338 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 43.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:26:19,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-10-13 07:26:19,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 132. [2021-10-13 07:26:19,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.3740458015267176) internal successors, (180), 131 states have internal predecessors, (180), 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) [2021-10-13 07:26:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 180 transitions. [2021-10-13 07:26:19,375 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 180 transitions. Word has length 31 [2021-10-13 07:26:19,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:19,376 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 180 transitions. [2021-10-13 07:26:19,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:19,376 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 180 transitions. [2021-10-13 07:26:19,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 07:26:19,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:19,383 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:19,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-13 07:26:19,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:19,599 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:19,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:19,600 INFO L82 PathProgramCache]: Analyzing trace with hash -526561838, now seen corresponding path program 1 times [2021-10-13 07:26:19,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:19,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473954601] [2021-10-13 07:26:19,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:19,601 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:19,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:19,609 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:19,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:26:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:19,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:26:19,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:19,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:20,031 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:20,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473954601] [2021-10-13 07:26:20,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473954601] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:20,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:20,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:26:20,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251435563] [2021-10-13 07:26:20,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:26:20,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:20,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:26:20,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:26:20,033 INFO L87 Difference]: Start difference. First operand 132 states and 180 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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) [2021-10-13 07:26:20,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:20,093 INFO L93 Difference]: Finished difference Result 354 states and 478 transitions. [2021-10-13 07:26:20,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:26:20,094 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-13 07:26:20,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:20,095 INFO L225 Difference]: With dead ends: 354 [2021-10-13 07:26:20,095 INFO L226 Difference]: Without dead ends: 228 [2021-10-13 07:26:20,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:26:20,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-13 07:26:20,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 140. [2021-10-13 07:26:20,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.3525179856115108) internal successors, (188), 139 states have internal predecessors, (188), 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) [2021-10-13 07:26:20,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 188 transitions. [2021-10-13 07:26:20,114 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 188 transitions. Word has length 31 [2021-10-13 07:26:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:20,114 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 188 transitions. [2021-10-13 07:26:20,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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) [2021-10-13 07:26:20,115 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 188 transitions. [2021-10-13 07:26:20,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 07:26:20,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:20,116 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:20,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:20,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:20,329 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:20,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:20,329 INFO L82 PathProgramCache]: Analyzing trace with hash -268396400, now seen corresponding path program 1 times [2021-10-13 07:26:20,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:20,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025035283] [2021-10-13 07:26:20,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:20,331 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:20,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:20,332 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:20,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:26:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:20,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:20,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:20,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:20,790 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:20,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025035283] [2021-10-13 07:26:20,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025035283] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:20,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:20,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:26:20,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011123836] [2021-10-13 07:26:20,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:20,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:20,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:20,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:20,792 INFO L87 Difference]: Start difference. First operand 140 states and 188 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-10-13 07:26:20,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:20,863 INFO L93 Difference]: Finished difference Result 430 states and 580 transitions. [2021-10-13 07:26:20,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:26:20,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-13 07:26:20,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:20,866 INFO L225 Difference]: With dead ends: 430 [2021-10-13 07:26:20,866 INFO L226 Difference]: Without dead ends: 296 [2021-10-13 07:26:20,867 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:20,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-10-13 07:26:20,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 244. [2021-10-13 07:26:20,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.337448559670782) internal successors, (325), 243 states have internal predecessors, (325), 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) [2021-10-13 07:26:20,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 325 transitions. [2021-10-13 07:26:20,894 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 325 transitions. Word has length 31 [2021-10-13 07:26:20,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:20,895 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 325 transitions. [2021-10-13 07:26:20,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-10-13 07:26:20,895 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 325 transitions. [2021-10-13 07:26:20,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 07:26:20,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:20,896 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:20,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:21,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:21,109 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:21,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:21,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1913811026, now seen corresponding path program 1 times [2021-10-13 07:26:21,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:21,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967324743] [2021-10-13 07:26:21,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:21,110 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:21,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:21,111 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:21,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:26:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:26:22,544 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:26:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:26:23,495 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:26:23,495 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:26:23,496 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:26:23,498 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:26:23,498 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:26:23,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:23,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:23,722 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:26:23,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:26:23 BoogieIcfgContainer [2021-10-13 07:26:23,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:26:23,884 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:26:23,884 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:26:23,884 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:26:23,885 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:26:14" (3/4) ... [2021-10-13 07:26:23,887 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:26:23,998 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:26:23,999 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:26:24,000 INFO L168 Benchmark]: Toolchain (without parser) took 12812.59 ms. Allocated memory was 60.8 MB in the beginning and 109.1 MB in the end (delta: 48.2 MB). Free memory was 38.4 MB in the beginning and 86.2 MB in the end (delta: -47.8 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:26:24,001 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 60.8 MB. Free memory is still 41.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:26:24,002 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.60 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 38.2 MB in the beginning and 50.7 MB in the end (delta: -12.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:26:24,002 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.09 ms. Allocated memory is still 81.8 MB. Free memory was 50.7 MB in the beginning and 47.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:26:24,002 INFO L168 Benchmark]: Boogie Preprocessor took 88.14 ms. Allocated memory is still 81.8 MB. Free memory was 47.1 MB in the beginning and 44.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:26:24,003 INFO L168 Benchmark]: RCFGBuilder took 2352.71 ms. Allocated memory is still 81.8 MB. Free memory was 44.3 MB in the beginning and 59.1 MB in the end (delta: -14.8 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:26:24,003 INFO L168 Benchmark]: TraceAbstraction took 9443.01 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 58.6 MB in the beginning and 44.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 42.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:26:24,003 INFO L168 Benchmark]: Witness Printer took 114.73 ms. Allocated memory is still 109.1 MB. Free memory was 44.4 MB in the beginning and 86.2 MB in the end (delta: -41.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:26:24,006 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 60.8 MB. Free memory is still 41.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 741.60 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 38.2 MB in the beginning and 50.7 MB in the end (delta: -12.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.09 ms. Allocated memory is still 81.8 MB. Free memory was 50.7 MB in the beginning and 47.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 88.14 ms. Allocated memory is still 81.8 MB. Free memory was 47.1 MB in the beginning and 44.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2352.71 ms. Allocated memory is still 81.8 MB. Free memory was 44.3 MB in the beginning and 59.1 MB in the end (delta: -14.8 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9443.01 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 58.6 MB in the beginning and 44.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 42.4 MB. Max. memory is 16.1 GB. * Witness Printer took 114.73 ms. Allocated memory is still 109.1 MB. Free memory was 44.4 MB in the beginning and 86.2 MB in the end (delta: -41.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 952]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L71] int cleanupTimeShifts = 4; [L344] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L547] int pumpRunning = 0; [L548] int systemActive = 1; [L845] int waterLevel = 1; [L846] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L152] int retValue_acc ; [L153] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L835] int retValue_acc ; [L838] retValue_acc = 1 [L839] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L159] tmp = valid_product() [L161] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L745] int splverifierCounter ; [L746] int tmp ; [L747] int tmp___0 ; [L748] int tmp___1 ; [L749] int tmp___2 ; [L752] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L754] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L756] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L762] tmp = __VERIFIER_nondet_int() [L764] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L863] COND TRUE waterLevel < 2 [L864] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L772] tmp___0 = __VERIFIER_nondet_int() [L774] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L875] COND FALSE !(\read(methaneLevelCritical)) [L878] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L782] tmp___2 = __VERIFIER_nondet_int() [L784] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L554] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L561] COND TRUE \read(systemActive) [L609] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L612] COND FALSE !(\read(pumpRunning)) [L583] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L586] COND TRUE ! pumpRunning [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L925] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L928] COND FALSE !(waterLevel < 2) [L932] retValue_acc = 0 [L933] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L588] tmp = isHighWaterLevel() [L590] COND TRUE \read(tmp) [L637] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L46] int tmp ; [L47] int tmp___0 ; [L884] int retValue_acc ; [L887] retValue_acc = methaneLevelCritical [L888] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L51] tmp = isMethaneLevelCritical() [L53] COND TRUE \read(tmp) [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L952] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 952]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 952]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 117 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 9222.9ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 31.8ms, AutomataDifference: 689.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 847 SDtfs, 1050 SDslu, 1172 SDs, 0 SdLazy, 153 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 208.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 462 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 166.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=9, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 184.7ms AutomataMinimizationTime, 9 MinimizatonAttempts, 613 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 212.7ms SsaConstructionTime, 2257.7ms SatisfiabilityAnalysisTime, 1704.8ms InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 446 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1824 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 07:26:24,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7c02e8-bbb7-4bdc-baf8-e98fa71350bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...