./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8 --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 c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:17:11,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:17:11,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:17:11,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:17:11,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:17:11,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:17:11,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:17:11,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:17:11,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:17:11,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:17:11,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:17:11,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:17:11,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:17:11,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:17:11,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:17:11,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:17:11,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:17:11,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:17:11,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:17:11,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:17:11,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:17:11,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:17:11,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:17:11,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:17:11,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:17:11,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:17:11,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:17:11,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:17:11,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:17:11,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:17:11,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:17:11,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:17:11,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:17:11,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:17:11,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:17:11,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:17:11,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:17:11,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:17:11,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:17:11,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:17:11,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:17:11,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:17:11,250 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:17:11,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:17:11,251 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:17:11,251 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:17:11,251 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:17:11,252 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:17:11,252 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:17:11,252 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:17:11,252 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:17:11,253 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:17:11,253 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:17:11,253 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:17:11,253 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:17:11,254 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:17:11,254 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:17:11,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:17:11,255 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:17:11,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:17:11,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:17:11,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:17:11,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:17:11,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:17:11,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:17:11,256 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:17:11,264 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:17:11,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:17:11,265 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:17:11,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:17:11,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:17:11,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:17:11,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:17:11,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:17:11,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:17:11,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:17:11,267 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:17:11,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:17:11,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:17:11,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:17:11,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:17:11,268 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_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e [2021-11-07 01:17:11,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:17:11,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:17:11,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:17:11,621 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:17:11,622 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:17:11,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-11-07 01:17:11,698 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/data/2979b1446/7f968de0840b489883f3e5bc7f8ca49e/FLAG75298f51c [2021-11-07 01:17:12,170 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:17:12,171 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-11-07 01:17:12,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/data/2979b1446/7f968de0840b489883f3e5bc7f8ca49e/FLAG75298f51c [2021-11-07 01:17:12,548 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/data/2979b1446/7f968de0840b489883f3e5bc7f8ca49e [2021-11-07 01:17:12,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:17:12,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:17:12,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:17:12,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:17:12,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:17:12,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:12" (1/1) ... [2021-11-07 01:17:12,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3174a143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:12, skipping insertion in model container [2021-11-07 01:17:12,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:12" (1/1) ... [2021-11-07 01:17:12,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:17:12,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:17:12,826 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_833d7e69-836c-40aa-b493-def3eadcfc43/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2021-11-07 01:17:12,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:17:12,856 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) [2021-11-07 01:17:12,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@11a2d49e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:12, skipping insertion in model container [2021-11-07 01:17:12,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:17:12,857 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:17:12,859 INFO L168 Benchmark]: Toolchain (without parser) took 305.56 ms. Allocated memory is still 98.6 MB. Free memory was 58.7 MB in the beginning and 75.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:17:12,860 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 74.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:17:12,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.87 ms. Allocated memory is still 98.6 MB. Free memory was 58.5 MB in the beginning and 75.0 MB in the end (delta: -16.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:17:12,863 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 74.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.87 ms. Allocated memory is still 98.6 MB. Free memory was 58.5 MB in the beginning and 75.0 MB in the end (delta: -16.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 96]: 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8 --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 c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:17:15,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:17:15,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:17:15,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:17:15,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:17:15,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:17:15,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:17:15,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:17:15,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:17:15,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:17:15,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:17:15,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:17:15,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:17:15,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:17:15,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:17:15,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:17:15,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:17:15,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:17:15,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:17:15,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:17:15,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:17:15,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:17:15,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:17:15,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:17:15,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:17:15,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:17:15,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:17:15,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:17:15,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:17:15,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:17:15,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:17:15,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:17:15,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:17:15,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:17:15,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:17:15,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:17:15,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:17:15,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:17:15,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:17:15,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:17:15,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:17:15,539 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:17:15,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:17:15,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:17:15,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:17:15,590 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:17:15,590 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:17:15,591 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:17:15,591 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:17:15,591 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:17:15,591 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:17:15,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:17:15,594 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:17:15,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:17:15,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:17:15,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:17:15,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:17:15,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:17:15,596 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:17:15,596 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:17:15,596 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:17:15,597 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:17:15,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:17:15,597 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:17:15,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:17:15,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:17:15,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:17:15,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:17:15,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:17:15,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:17:15,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:17:15,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:17:15,599 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:17:15,600 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:15,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:17:15,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:17:15,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:17:15,601 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_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e [2021-11-07 01:17:15,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:17:16,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:17:16,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:17:16,032 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:17:16,033 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:17:16,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-11-07 01:17:16,121 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/data/0fc0fa663/9f17733c81a5450daf01cfb55f82a487/FLAG46ad2c7f3 [2021-11-07 01:17:16,723 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:17:16,728 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-11-07 01:17:16,740 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/data/0fc0fa663/9f17733c81a5450daf01cfb55f82a487/FLAG46ad2c7f3 [2021-11-07 01:17:17,047 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/data/0fc0fa663/9f17733c81a5450daf01cfb55f82a487 [2021-11-07 01:17:17,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:17:17,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:17:17,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:17:17,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:17:17,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:17:17,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:17" (1/1) ... [2021-11-07 01:17:17,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0dc1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:17, skipping insertion in model container [2021-11-07 01:17:17,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:17" (1/1) ... [2021-11-07 01:17:17,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:17:17,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:17:17,324 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_833d7e69-836c-40aa-b493-def3eadcfc43/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2021-11-07 01:17:17,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:17:17,369 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:17:17,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:17:17,404 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_833d7e69-836c-40aa-b493-def3eadcfc43/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2021-11-07 01:17:17,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:17:17,441 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:17:17,467 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_833d7e69-836c-40aa-b493-def3eadcfc43/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2021-11-07 01:17:17,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:17:17,494 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:17:17,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:17 WrapperNode [2021-11-07 01:17:17,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:17:17,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:17:17,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:17:17,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:17:17,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:17" (1/1) ... [2021-11-07 01:17:17,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:17" (1/1) ... [2021-11-07 01:17:17,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:17:17,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:17:17,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:17:17,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:17:17,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:17" (1/1) ... [2021-11-07 01:17:17,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:17" (1/1) ... [2021-11-07 01:17:17,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:17" (1/1) ... [2021-11-07 01:17:17,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:17" (1/1) ... [2021-11-07 01:17:17,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:17" (1/1) ... [2021-11-07 01:17:17,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:17" (1/1) ... [2021-11-07 01:17:17,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:17" (1/1) ... [2021-11-07 01:17:17,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:17:17,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:17:17,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:17:17,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:17:17,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:17" (1/1) ... [2021-11-07 01:17:17,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:17:17,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:17:17,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:17:17,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:17:17,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:17:17,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:17:17,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:17:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 01:17:17,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 01:17:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 01:17:17,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 01:17:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 01:17:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 01:17:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:17:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:17:17,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:17:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:17:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:17:17,716 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 01:17:18,829 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:17:18,829 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-11-07 01:17:18,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:17:18 BoogieIcfgContainer [2021-11-07 01:17:18,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:17:18,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:17:18,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:17:18,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:17:18,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:17:17" (1/3) ... [2021-11-07 01:17:18,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35189b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:17:18, skipping insertion in model container [2021-11-07 01:17:18,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:17" (2/3) ... [2021-11-07 01:17:18,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35189b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:17:18, skipping insertion in model container [2021-11-07 01:17:18,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:17:18" (3/3) ... [2021-11-07 01:17:18,842 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2021-11-07 01:17:18,849 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 01:17:18,849 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:17:18,849 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:17:18,850 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 01:17:18,881 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,882 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,882 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,883 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,883 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,883 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,884 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,884 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,884 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,884 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,885 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,885 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,885 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,885 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,886 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,886 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,886 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,886 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,886 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,887 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,887 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,887 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,888 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,888 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,888 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,888 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,889 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,889 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,889 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,889 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,890 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,890 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,890 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,891 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,891 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,891 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,892 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,893 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,894 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,894 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,894 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,895 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,895 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,895 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,895 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,896 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,897 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,897 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,898 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,898 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~tmp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,898 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,898 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,898 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,899 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,899 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,900 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,900 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,900 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~tmp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,902 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~tmp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,902 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~tmp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,902 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,903 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,904 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,904 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,908 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,908 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,908 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,909 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~tmp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,909 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,909 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,910 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,911 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,911 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,911 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,911 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,914 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,914 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,914 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,915 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,915 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,915 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,915 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,916 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,916 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,916 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,916 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,917 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,917 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,917 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:18,923 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-07 01:17:18,973 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:17:18,980 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:17:18,980 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 01:17:18,995 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 01:17:19,004 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 105 transitions, 226 flow [2021-11-07 01:17:19,007 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 105 transitions, 226 flow [2021-11-07 01:17:19,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 105 transitions, 226 flow [2021-11-07 01:17:19,067 INFO L129 PetriNetUnfolder]: 9/103 cut-off events. [2021-11-07 01:17:19,068 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-07 01:17:19,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 103 events. 9/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2021-11-07 01:17:19,075 INFO L116 LiptonReduction]: Number of co-enabled transitions 572 [2021-11-07 01:17:30,131 INFO L131 LiptonReduction]: Checked pairs total: 849 [2021-11-07 01:17:30,131 INFO L133 LiptonReduction]: Total number of compositions: 96 [2021-11-07 01:17:30,141 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 22 transitions, 60 flow [2021-11-07 01:17:30,168 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 53 states, 52 states have (on average 2.269230769230769) internal successors, (118), 52 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:30,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 52 states have (on average 2.269230769230769) internal successors, (118), 52 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:30,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:17:30,180 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:30,181 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:30,182 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:17:30,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:30,189 INFO L85 PathProgramCache]: Analyzing trace with hash 149904867, now seen corresponding path program 1 times [2021-11-07 01:17:30,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:30,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577880044] [2021-11-07 01:17:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:30,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:30,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:30,212 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:30,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:17:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:30,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:17:30,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:30,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:30,574 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:30,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577880044] [2021-11-07 01:17:30,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577880044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:30,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:30,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-11-07 01:17:30,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918366011] [2021-11-07 01:17:30,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:17:30,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:30,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:17:30,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:17:30,601 INFO L87 Difference]: Start difference. First operand has 53 states, 52 states have (on average 2.269230769230769) internal successors, (118), 52 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:30,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:30,668 INFO L93 Difference]: Finished difference Result 98 states and 222 transitions. [2021-11-07 01:17:30,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:17:30,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-07 01:17:30,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:30,681 INFO L225 Difference]: With dead ends: 98 [2021-11-07 01:17:30,681 INFO L226 Difference]: Without dead ends: 93 [2021-11-07 01:17:30,683 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:17:30,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-07 01:17:30,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 75. [2021-11-07 01:17:30,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 2.2837837837837838) internal successors, (169), 74 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:30,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 169 transitions. [2021-11-07 01:17:30,729 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 169 transitions. Word has length 14 [2021-11-07 01:17:30,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:30,729 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 169 transitions. [2021-11-07 01:17:30,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:30,730 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 169 transitions. [2021-11-07 01:17:30,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:17:30,732 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:30,732 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:30,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:30,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:17:30,944 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:17:30,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:30,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1047876715, now seen corresponding path program 1 times [2021-11-07 01:17:30,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:30,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102614112] [2021-11-07 01:17:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:30,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:30,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:30,957 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:30,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:17:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:31,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:17:31,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:31,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:31,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:31,351 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:31,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102614112] [2021-11-07 01:17:31,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102614112] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:31,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:31,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:17:31,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002419790] [2021-11-07 01:17:31,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:17:31,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:31,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:17:31,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:17:31,355 INFO L87 Difference]: Start difference. First operand 75 states and 169 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:31,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:31,699 INFO L93 Difference]: Finished difference Result 125 states and 285 transitions. [2021-11-07 01:17:31,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:17:31,700 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 01:17:31,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:31,703 INFO L225 Difference]: With dead ends: 125 [2021-11-07 01:17:31,703 INFO L226 Difference]: Without dead ends: 125 [2021-11-07 01:17:31,704 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:17:31,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-07 01:17:31,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 73. [2021-11-07 01:17:31,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 2.388888888888889) internal successors, (172), 72 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:31,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 172 transitions. [2021-11-07 01:17:31,739 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 172 transitions. Word has length 16 [2021-11-07 01:17:31,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:31,740 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 172 transitions. [2021-11-07 01:17:31,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:31,740 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 172 transitions. [2021-11-07 01:17:31,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:17:31,742 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:31,742 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:31,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:31,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:17:31,955 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:17:31,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:31,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2002108657, now seen corresponding path program 1 times [2021-11-07 01:17:31,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:31,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991455211] [2021-11-07 01:17:31,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:31,958 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:31,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:31,959 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:31,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:17:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:32,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:17:32,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:32,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:32,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:32,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:32,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991455211] [2021-11-07 01:17:32,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991455211] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:32,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:32,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:17:32,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641445420] [2021-11-07 01:17:32,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:17:32,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:32,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:17:32,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:17:32,367 INFO L87 Difference]: Start difference. First operand 73 states and 172 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:32,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:32,669 INFO L93 Difference]: Finished difference Result 119 states and 264 transitions. [2021-11-07 01:17:32,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:17:32,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 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 [2021-11-07 01:17:32,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:32,671 INFO L225 Difference]: With dead ends: 119 [2021-11-07 01:17:32,672 INFO L226 Difference]: Without dead ends: 109 [2021-11-07 01:17:32,672 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:17:32,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-07 01:17:32,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 73. [2021-11-07 01:17:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 2.3333333333333335) internal successors, (168), 72 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:32,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 168 transitions. [2021-11-07 01:17:32,688 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 168 transitions. Word has length 16 [2021-11-07 01:17:32,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:32,689 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 168 transitions. [2021-11-07 01:17:32,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:32,689 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 168 transitions. [2021-11-07 01:17:32,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:17:32,691 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:32,691 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:32,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:32,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:17:32,897 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:17:32,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:32,898 INFO L85 PathProgramCache]: Analyzing trace with hash 771627555, now seen corresponding path program 2 times [2021-11-07 01:17:32,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:32,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960563866] [2021-11-07 01:17:32,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:17:32,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:32,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:32,900 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:32,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:17:33,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:17:33,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:17:33,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:17:33,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:33,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:33,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:33,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:33,527 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:33,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960563866] [2021-11-07 01:17:33,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960563866] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:17:33,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:17:33,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2021-11-07 01:17:33,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936036106] [2021-11-07 01:17:33,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:17:33,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:33,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:17:33,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:17:33,530 INFO L87 Difference]: Start difference. First operand 73 states and 168 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 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) [2021-11-07 01:17:33,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:33,672 INFO L93 Difference]: Finished difference Result 129 states and 292 transitions. [2021-11-07 01:17:33,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:17:33,673 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 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 [2021-11-07 01:17:33,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:33,675 INFO L225 Difference]: With dead ends: 129 [2021-11-07 01:17:33,675 INFO L226 Difference]: Without dead ends: 129 [2021-11-07 01:17:33,675 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:17:33,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-07 01:17:33,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 79. [2021-11-07 01:17:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 2.3974358974358974) internal successors, (187), 78 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 187 transitions. [2021-11-07 01:17:33,686 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 187 transitions. Word has length 16 [2021-11-07 01:17:33,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:33,687 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 187 transitions. [2021-11-07 01:17:33,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 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) [2021-11-07 01:17:33,687 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 187 transitions. [2021-11-07 01:17:33,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:17:33,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:33,689 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:33,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:33,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:17:33,902 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:17:33,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:33,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1542484095, now seen corresponding path program 3 times [2021-11-07 01:17:33,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:33,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324065654] [2021-11-07 01:17:33,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:17:33,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:33,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:33,905 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:33,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:17:34,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 01:17:34,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:17:34,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:17:34,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:34,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:34,618 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:34,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324065654] [2021-11-07 01:17:34,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324065654] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:34,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [465597820] [2021-11-07 01:17:34,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:17:34,619 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:34,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:17:34,625 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:17:34,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 01:17:34,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 01:17:34,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:17:34,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:17:34,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:35,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:35,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [465597820] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:17:35,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:17:35,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7, 5] total 16 [2021-11-07 01:17:35,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083904067] [2021-11-07 01:17:35,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:17:35,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:35,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:17:35,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:17:35,221 INFO L87 Difference]: Start difference. First operand 79 states and 187 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2021-11-07 01:17:35,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:35,531 INFO L93 Difference]: Finished difference Result 133 states and 298 transitions. [2021-11-07 01:17:35,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:17:35,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 [2021-11-07 01:17:35,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:35,534 INFO L225 Difference]: With dead ends: 133 [2021-11-07 01:17:35,534 INFO L226 Difference]: Without dead ends: 133 [2021-11-07 01:17:35,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:17:35,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-07 01:17:35,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 77. [2021-11-07 01:17:35,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 2.3947368421052633) internal successors, (182), 76 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:35,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 182 transitions. [2021-11-07 01:17:35,542 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 182 transitions. Word has length 16 [2021-11-07 01:17:35,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:35,543 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 182 transitions. [2021-11-07 01:17:35,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2021-11-07 01:17:35,543 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 182 transitions. [2021-11-07 01:17:35,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:17:35,545 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:35,545 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:35,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:35,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:35,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:35,958 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:17:35,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:35,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1345406137, now seen corresponding path program 2 times [2021-11-07 01:17:35,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:35,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040916768] [2021-11-07 01:17:35,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:17:35,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:35,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:35,960 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:35,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:17:36,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:17:36,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:17:36,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:17:36,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:36,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:36,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:36,554 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:36,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040916768] [2021-11-07 01:17:36,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040916768] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:17:36,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:17:36,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-11-07 01:17:36,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232091834] [2021-11-07 01:17:36,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:17:36,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:36,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:17:36,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:17:36,556 INFO L87 Difference]: Start difference. First operand 77 states and 182 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 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) [2021-11-07 01:17:36,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:36,750 INFO L93 Difference]: Finished difference Result 137 states and 302 transitions. [2021-11-07 01:17:36,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:17:36,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 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 [2021-11-07 01:17:36,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:36,752 INFO L225 Difference]: With dead ends: 137 [2021-11-07 01:17:36,752 INFO L226 Difference]: Without dead ends: 115 [2021-11-07 01:17:36,753 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:17:36,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-07 01:17:36,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2021-11-07 01:17:36,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 2.31) internal successors, (231), 100 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 231 transitions. [2021-11-07 01:17:36,793 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 231 transitions. Word has length 16 [2021-11-07 01:17:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:36,793 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 231 transitions. [2021-11-07 01:17:36,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 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) [2021-11-07 01:17:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 231 transitions. [2021-11-07 01:17:36,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:17:36,795 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:36,799 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:36,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:37,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:17:37,012 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:17:37,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:37,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1104891987, now seen corresponding path program 4 times [2021-11-07 01:17:37,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:37,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596349274] [2021-11-07 01:17:37,014 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:17:37,014 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:37,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:37,015 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:37,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:17:37,165 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:17:37,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:17:37,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:17:37,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:37,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:37,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:37,432 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:37,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596349274] [2021-11-07 01:17:37,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596349274] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:37,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:37,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:17:37,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573206828] [2021-11-07 01:17:37,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:17:37,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:37,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:17:37,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:17:37,435 INFO L87 Difference]: Start difference. First operand 101 states and 231 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:37,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:37,857 INFO L93 Difference]: Finished difference Result 187 states and 443 transitions. [2021-11-07 01:17:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:17:37,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 01:17:37,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:37,861 INFO L225 Difference]: With dead ends: 187 [2021-11-07 01:17:37,861 INFO L226 Difference]: Without dead ends: 175 [2021-11-07 01:17:37,862 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:17:37,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-07 01:17:37,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 95. [2021-11-07 01:17:37,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 2.2872340425531914) internal successors, (215), 94 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:37,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 215 transitions. [2021-11-07 01:17:37,876 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 215 transitions. Word has length 16 [2021-11-07 01:17:37,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:37,877 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 215 transitions. [2021-11-07 01:17:37,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:37,878 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 215 transitions. [2021-11-07 01:17:37,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:17:37,879 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:37,879 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:37,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:38,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:17:38,093 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:17:38,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:38,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1971915499, now seen corresponding path program 5 times [2021-11-07 01:17:38,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:38,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060024260] [2021-11-07 01:17:38,094 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 01:17:38,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:38,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:38,095 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:38,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:17:38,262 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:17:38,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:17:38,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:17:38,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:38,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:38,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:38,488 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:38,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060024260] [2021-11-07 01:17:38,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060024260] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:38,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:38,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:17:38,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054366293] [2021-11-07 01:17:38,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:17:38,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:38,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:17:38,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:17:38,491 INFO L87 Difference]: Start difference. First operand 95 states and 215 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:38,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:38,807 INFO L93 Difference]: Finished difference Result 159 states and 328 transitions. [2021-11-07 01:17:38,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:17:38,808 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 01:17:38,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:38,810 INFO L225 Difference]: With dead ends: 159 [2021-11-07 01:17:38,810 INFO L226 Difference]: Without dead ends: 149 [2021-11-07 01:17:38,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:17:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-07 01:17:38,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 89. [2021-11-07 01:17:38,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.2613636363636362) internal successors, (199), 88 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:38,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 199 transitions. [2021-11-07 01:17:38,816 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 199 transitions. Word has length 16 [2021-11-07 01:17:38,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:38,817 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 199 transitions. [2021-11-07 01:17:38,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:38,817 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 199 transitions. [2021-11-07 01:17:38,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:17:38,818 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:38,819 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:38,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:39,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:17:39,037 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:17:39,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:39,038 INFO L85 PathProgramCache]: Analyzing trace with hash 95395957, now seen corresponding path program 6 times [2021-11-07 01:17:39,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:39,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641266151] [2021-11-07 01:17:39,038 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 01:17:39,038 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:39,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:39,040 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:39,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:17:39,244 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-11-07 01:17:39,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:17:39,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:17:39,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:39,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:39,467 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:39,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641266151] [2021-11-07 01:17:39,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641266151] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:39,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:39,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:17:39,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060616915] [2021-11-07 01:17:39,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:17:39,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:39,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:17:39,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:17:39,469 INFO L87 Difference]: Start difference. First operand 89 states and 199 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:39,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:39,803 INFO L93 Difference]: Finished difference Result 137 states and 297 transitions. [2021-11-07 01:17:39,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:17:39,804 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 01:17:39,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:39,806 INFO L225 Difference]: With dead ends: 137 [2021-11-07 01:17:39,806 INFO L226 Difference]: Without dead ends: 129 [2021-11-07 01:17:39,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:17:39,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-07 01:17:39,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 85. [2021-11-07 01:17:39,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.2023809523809526) internal successors, (185), 84 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:39,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 185 transitions. [2021-11-07 01:17:39,812 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 185 transitions. Word has length 16 [2021-11-07 01:17:39,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:39,812 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 185 transitions. [2021-11-07 01:17:39,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:39,813 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 185 transitions. [2021-11-07 01:17:39,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:17:39,813 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:39,813 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:39,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:40,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:17:40,027 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:17:40,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:40,027 INFO L85 PathProgramCache]: Analyzing trace with hash -111450963, now seen corresponding path program 7 times [2021-11-07 01:17:40,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:40,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106545466] [2021-11-07 01:17:40,028 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:17:40,028 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:40,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:40,029 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:40,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:17:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:40,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:17:40,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:40,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:40,414 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:40,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106545466] [2021-11-07 01:17:40,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106545466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:40,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:40,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:17:40,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591810254] [2021-11-07 01:17:40,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:17:40,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:40,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:17:40,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:17:40,417 INFO L87 Difference]: Start difference. First operand 85 states and 185 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:40,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:40,662 INFO L93 Difference]: Finished difference Result 93 states and 202 transitions. [2021-11-07 01:17:40,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:17:40,663 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 01:17:40,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:40,664 INFO L225 Difference]: With dead ends: 93 [2021-11-07 01:17:40,665 INFO L226 Difference]: Without dead ends: 82 [2021-11-07 01:17:40,665 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:17:40,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-07 01:17:40,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2021-11-07 01:17:40,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.287671232876712) internal successors, (167), 73 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:40,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 167 transitions. [2021-11-07 01:17:40,670 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 167 transitions. Word has length 16 [2021-11-07 01:17:40,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:40,670 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 167 transitions. [2021-11-07 01:17:40,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:40,670 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 167 transitions. [2021-11-07 01:17:40,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 01:17:40,671 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:40,671 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:40,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:40,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:17:40,896 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:17:40,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:40,896 INFO L85 PathProgramCache]: Analyzing trace with hash -580714290, now seen corresponding path program 1 times [2021-11-07 01:17:40,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:40,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195048460] [2021-11-07 01:17:40,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:40,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:40,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:40,901 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:40,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:17:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:41,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:17:41,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:41,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:41,477 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:41,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195048460] [2021-11-07 01:17:41,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195048460] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:41,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2137132559] [2021-11-07 01:17:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:41,478 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:41,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:17:41,482 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:17:41,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 01:17:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:41,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:17:41,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:42,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:42,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:42,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2137132559] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:42,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404610294] [2021-11-07 01:17:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:42,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:17:42,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:17:42,104 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:17:42,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 01:17:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:42,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:17:42,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:17:42,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:17:42,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404610294] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:42,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:17:42,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5, 5, 5] total 17 [2021-11-07 01:17:42,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676313753] [2021-11-07 01:17:42,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:17:42,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:42,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:17:42,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:17:42,552 INFO L87 Difference]: Start difference. First operand 74 states and 167 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:42,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:42,769 INFO L93 Difference]: Finished difference Result 132 states and 305 transitions. [2021-11-07 01:17:42,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:17:42,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-07 01:17:42,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:42,770 INFO L225 Difference]: With dead ends: 132 [2021-11-07 01:17:42,770 INFO L226 Difference]: Without dead ends: 132 [2021-11-07 01:17:42,771 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:17:42,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-07 01:17:42,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 82. [2021-11-07 01:17:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.308641975308642) internal successors, (187), 81 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:42,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 187 transitions. [2021-11-07 01:17:42,776 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 187 transitions. Word has length 17 [2021-11-07 01:17:42,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:42,776 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 187 transitions. [2021-11-07 01:17:42,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:42,777 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 187 transitions. [2021-11-07 01:17:42,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 01:17:42,778 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:42,778 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:42,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:42,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:43,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:43,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:17:43,391 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:17:43,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:43,392 INFO L85 PathProgramCache]: Analyzing trace with hash 619573654, now seen corresponding path program 2 times [2021-11-07 01:17:43,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:43,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405878902] [2021-11-07 01:17:43,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:17:43,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:43,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:43,393 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:43,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:17:43,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:17:43,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:17:43,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:17:43,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:43,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:44,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:44,048 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:44,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405878902] [2021-11-07 01:17:44,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405878902] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:44,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [265891144] [2021-11-07 01:17:44,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:17:44,049 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:44,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:17:44,050 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:17:44,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:17:44,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:17:44,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:17:44,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:17:44,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:44,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:44,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [265891144] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:44,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146921241] [2021-11-07 01:17:44,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:17:44,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:17:44,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:17:44,753 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:17:44,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 01:17:45,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:17:45,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:17:45,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:17:45,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:45,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:17:45,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:45,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:17:45,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146921241] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:45,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:17:45,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5, 5, 5] total 15 [2021-11-07 01:17:45,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940527503] [2021-11-07 01:17:45,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:17:45,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:45,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:17:45,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:17:45,286 INFO L87 Difference]: Start difference. First operand 82 states and 187 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:45,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:45,839 INFO L93 Difference]: Finished difference Result 210 states and 481 transitions. [2021-11-07 01:17:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:17:45,840 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-07 01:17:45,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:45,842 INFO L225 Difference]: With dead ends: 210 [2021-11-07 01:17:45,842 INFO L226 Difference]: Without dead ends: 210 [2021-11-07 01:17:45,843 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:17:45,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-07 01:17:45,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 84. [2021-11-07 01:17:45,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 2.3855421686746987) internal successors, (198), 83 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:45,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 198 transitions. [2021-11-07 01:17:45,853 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 198 transitions. Word has length 17 [2021-11-07 01:17:45,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:45,854 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 198 transitions. [2021-11-07 01:17:45,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:45,854 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 198 transitions. [2021-11-07 01:17:45,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 01:17:45,855 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:45,855 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:45,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:46,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:46,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:46,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:17:46,456 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:17:46,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:46,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1371461916, now seen corresponding path program 3 times [2021-11-07 01:17:46,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:46,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748777322] [2021-11-07 01:17:46,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:17:46,457 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:46,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:46,458 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:46,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:17:46,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 01:17:46,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:17:46,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:17:46,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:47,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:47,208 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:47,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748777322] [2021-11-07 01:17:47,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748777322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:47,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [317643210] [2021-11-07 01:17:47,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:17:47,209 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:47,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:17:47,212 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:17:47,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 01:17:47,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 01:17:47,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:17:47,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:17:47,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:47,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:47,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:47,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:47,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [317643210] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:47,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591839368] [2021-11-07 01:17:47,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:17:47,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:17:47,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:17:47,936 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:17:47,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 01:17:48,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 01:17:48,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:17:48,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:17:48,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:48,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:17:48,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:48,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:17:48,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591839368] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:48,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:17:48,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5, 5, 5] total 13 [2021-11-07 01:17:48,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965834137] [2021-11-07 01:17:48,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:17:48,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:48,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:17:48,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:17:48,482 INFO L87 Difference]: Start difference. First operand 84 states and 198 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:48,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:48,811 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2021-11-07 01:17:48,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:17:48,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-07 01:17:48,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:48,813 INFO L225 Difference]: With dead ends: 144 [2021-11-07 01:17:48,813 INFO L226 Difference]: Without dead ends: 144 [2021-11-07 01:17:48,813 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:17:48,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-07 01:17:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 76. [2021-11-07 01:17:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.2933333333333334) internal successors, (172), 75 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 172 transitions. [2021-11-07 01:17:48,819 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 172 transitions. Word has length 17 [2021-11-07 01:17:48,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:48,819 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 172 transitions. [2021-11-07 01:17:48,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:48,820 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 172 transitions. [2021-11-07 01:17:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 01:17:48,821 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:48,821 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:48,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:49,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:49,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-07 01:17:49,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:17:49,436 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:17:49,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:49,437 INFO L85 PathProgramCache]: Analyzing trace with hash 2049642974, now seen corresponding path program 1 times [2021-11-07 01:17:49,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:49,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926532211] [2021-11-07 01:17:49,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:49,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:49,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:49,439 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:49,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:17:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:17:49,839 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:17:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:17:50,059 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-07 01:17:50,071 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:17:50,073 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:17:50,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-07 01:17:50,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-07 01:17:50,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:50,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:17:50,278 INFO L731 BasicCegarLoop]: Path program histogram: [7, 3, 2, 1, 1] [2021-11-07 01:17:50,281 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-07 01:17:50,282 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:17:50,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:17:50 BasicIcfg [2021-11-07 01:17:50,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:17:50,348 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:17:50,348 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:17:50,349 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:17:50,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:17:18" (3/4) ... [2021-11-07 01:17:50,351 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 01:17:50,438 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d7e69-836c-40aa-b493-def3eadcfc43/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:17:50,438 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:17:50,440 INFO L168 Benchmark]: Toolchain (without parser) took 33378.24 ms. Allocated memory was 62.9 MB in the beginning and 121.6 MB in the end (delta: 58.7 MB). Free memory was 42.0 MB in the beginning and 48.7 MB in the end (delta: -6.6 MB). Peak memory consumption was 55.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:17:50,441 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 62.9 MB. Free memory is still 43.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:17:50,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 431.31 ms. Allocated memory is still 62.9 MB. Free memory was 41.8 MB in the beginning and 44.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:17:50,442 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.67 ms. Allocated memory is still 62.9 MB. Free memory was 44.5 MB in the beginning and 42.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:17:50,442 INFO L168 Benchmark]: Boogie Preprocessor took 44.11 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 41.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:17:50,443 INFO L168 Benchmark]: RCFGBuilder took 1224.36 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 40.9 MB in the beginning and 53.9 MB in the end (delta: -13.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:17:50,443 INFO L168 Benchmark]: TraceAbstraction took 31512.97 ms. Allocated memory was 83.9 MB in the beginning and 121.6 MB in the end (delta: 37.7 MB). Free memory was 53.5 MB in the beginning and 56.0 MB in the end (delta: -2.5 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:17:50,444 INFO L168 Benchmark]: Witness Printer took 90.40 ms. Allocated memory is still 121.6 MB. Free memory was 56.0 MB in the beginning and 48.7 MB in the end (delta: 7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:17:50,447 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 62.9 MB. Free memory is still 43.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 431.31 ms. Allocated memory is still 62.9 MB. Free memory was 41.8 MB in the beginning and 44.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.67 ms. Allocated memory is still 62.9 MB. Free memory was 44.5 MB in the beginning and 42.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.11 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 41.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1224.36 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 40.9 MB in the beginning and 53.9 MB in the end (delta: -13.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 31512.97 ms. Allocated memory was 83.9 MB in the beginning and 121.6 MB in the end (delta: 37.7 MB). Free memory was 53.5 MB in the beginning and 56.0 MB in the end (delta: -2.5 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. * Witness Printer took 90.40 ms. Allocated memory is still 121.6 MB. Free memory was 56.0 MB in the beginning and 48.7 MB in the end (delta: 7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.1s, 103 PlacesBefore, 26 PlacesAfterwards, 105 TransitionsBefore, 22 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 6 FixpointIterations, 60 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 96 TotalNumberOfCompositions, 849 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 708, positive: 669, positive conditional: 0, positive unconditional: 669, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 408, positive: 393, positive conditional: 0, positive unconditional: 393, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 408, positive: 393, positive conditional: 0, positive unconditional: 393, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 403, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 403, negative conditional: 0, negative unconditional: 403, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 708, positive: 276, positive conditional: 0, positive unconditional: 276, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 408, unknown conditional: 0, unknown unconditional: 408] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 87]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L41] 0 int* A; [L42] 0 int counter, N; [L75] 0 pthread_t t1, t2; [L77] 0 N = __VERIFIER_nondet_int() [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L96] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L97] 0 int i = 0; VAL [A={0:0}, counter=0, N=1] [L97] COND TRUE 0 i < size [L98] 0 arr[i] = __VERIFIER_nondet_int() [L97] 0 i++ VAL [A={0:0}, counter=0, N=1] [L97] COND FALSE 0 !(i < size) [L100] 0 return arr; [L78] 0 A = create_fresh_int_array(N) [L81] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [A={1:0}, counter=0, N=1] [L49] 1 int i=0; VAL [A={1:0}, counter=0, N=1] [L49] COND TRUE 1 i