./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 15:29:07,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:29:07,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:29:07,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:29:07,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:29:07,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:29:07,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:29:07,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:29:07,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:29:07,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:29:07,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:29:07,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:29:07,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:29:07,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:29:07,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:29:07,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:29:07,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:29:07,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:29:07,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:29:07,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:29:07,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:29:07,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:29:07,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:29:07,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:29:07,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:29:07,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:29:07,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:29:07,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:29:07,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:29:07,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:29:07,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:29:07,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:29:07,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:29:07,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:29:07,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:29:07,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:29:07,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:29:07,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:29:07,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:29:07,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:29:07,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:29:07,632 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 15:29:07,670 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:29:07,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:29:07,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:29:07,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:29:07,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:29:07,672 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:29:07,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:29:07,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:29:07,673 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:29:07,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:29:07,675 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:29:07,675 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:29:07,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:29:07,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:29:07,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:29:07,676 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 15:29:07,676 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 15:29:07,676 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 15:29:07,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:29:07,677 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:29:07,677 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:29:07,677 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:29:07,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:29:07,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:29:07,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:29:07,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:29:07,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:29:07,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:29:07,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:29:07,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:29:07,679 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:29:07,680 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:29:07,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:29:07,680 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 [2022-11-25 15:29:07,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:29:08,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:29:08,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:29:08,024 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:29:08,026 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:29:08,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2022-11-25 15:29:11,137 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:29:11,330 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:29:11,330 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2022-11-25 15:29:11,338 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/data/efc3a75c5/990329ae47844dff8edb261d8493796c/FLAG7ca65af79 [2022-11-25 15:29:11,354 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/data/efc3a75c5/990329ae47844dff8edb261d8493796c [2022-11-25 15:29:11,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:29:11,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:29:11,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:29:11,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:29:11,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:29:11,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:29:11" (1/1) ... [2022-11-25 15:29:11,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c13cfa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:11, skipping insertion in model container [2022-11-25 15:29:11,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:29:11" (1/1) ... [2022-11-25 15:29:11,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:29:11,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:29:11,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:11,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:11,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:11,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:11,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:11,622 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:11,622 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:11,627 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:11,633 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:11,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:11,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:11,641 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:11,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:11,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:11,651 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:11,653 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:11,670 WARN L237 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_28f481ec-3ac5-44ad-8f5d-b9904e14a984/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2022-11-25 15:29:11,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:29:11,704 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-25 15:29:11,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@349fb456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:11, skipping insertion in model container [2022-11-25 15:29:11,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:29:11,706 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 15:29:11,709 INFO L158 Benchmark]: Toolchain (without parser) took 349.03ms. Allocated memory is still 148.9MB. Free memory was 104.2MB in the beginning and 92.8MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 15:29:11,709 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 148.9MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:29:11,710 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.45ms. Allocated memory is still 148.9MB. Free memory was 104.2MB in the beginning and 92.8MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 15:29:11,712 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 148.9MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 346.45ms. Allocated memory is still 148.9MB. Free memory was 104.2MB in the beginning and 92.8MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 171]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 15:29:14,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:29:14,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:29:14,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:29:14,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:29:14,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:29:14,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:29:14,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:29:14,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:29:14,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:29:14,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:29:14,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:29:14,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:29:14,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:29:14,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:29:14,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:29:14,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:29:14,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:29:14,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:29:14,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:29:14,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:29:14,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:29:14,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:29:14,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:29:14,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:29:14,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:29:14,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:29:14,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:29:14,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:29:14,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:29:14,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:29:14,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:29:14,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:29:14,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:29:14,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:29:14,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:29:14,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:29:14,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:29:14,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:29:14,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:29:14,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:29:14,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 15:29:14,225 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:29:14,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:29:14,227 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:29:14,227 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:29:14,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:29:14,228 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:29:14,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:29:14,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:29:14,229 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:29:14,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:29:14,231 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:29:14,231 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:29:14,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:29:14,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:29:14,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:29:14,232 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 15:29:14,232 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 15:29:14,232 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 15:29:14,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:29:14,233 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:29:14,233 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 15:29:14,233 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 15:29:14,233 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:29:14,233 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:29:14,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:29:14,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:29:14,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:29:14,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:29:14,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:29:14,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:29:14,235 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 15:29:14,235 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 15:29:14,236 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:29:14,236 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:29:14,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:29:14,236 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 15:29:14,237 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 [2022-11-25 15:29:14,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:29:14,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:29:14,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:29:14,686 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:29:14,687 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:29:14,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2022-11-25 15:29:17,694 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:29:17,900 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:29:17,904 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2022-11-25 15:29:17,927 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/data/0268ba45e/3de99b2d32054299bcf22859c0b78eec/FLAGd66699dde [2022-11-25 15:29:17,955 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/data/0268ba45e/3de99b2d32054299bcf22859c0b78eec [2022-11-25 15:29:17,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:29:17,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:29:17,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:29:17,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:29:17,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:29:17,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:29:17" (1/1) ... [2022-11-25 15:29:17,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@291aa6c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:17, skipping insertion in model container [2022-11-25 15:29:17,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:29:17" (1/1) ... [2022-11-25 15:29:17,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:29:18,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:29:18,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,261 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,269 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,303 WARN L237 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_28f481ec-3ac5-44ad-8f5d-b9904e14a984/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2022-11-25 15:29:18,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:29:18,342 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 15:29:18,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:29:18,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,369 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,375 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,377 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,379 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,380 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,383 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,386 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,389 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,396 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,396 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,411 WARN L237 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_28f481ec-3ac5-44ad-8f5d-b9904e14a984/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2022-11-25 15:29:18,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:29:18,426 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:29:18,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,488 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,488 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:18,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:18,493 WARN L237 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_28f481ec-3ac5-44ad-8f5d-b9904e14a984/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2022-11-25 15:29:18,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:29:18,517 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:29:18,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:18 WrapperNode [2022-11-25 15:29:18,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:29:18,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:29:18,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:29:18,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:29:18,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:18" (1/1) ... [2022-11-25 15:29:18,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:18" (1/1) ... [2022-11-25 15:29:18,575 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 325 [2022-11-25 15:29:18,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:29:18,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:29:18,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:29:18,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:29:18,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:18" (1/1) ... [2022-11-25 15:29:18,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:18" (1/1) ... [2022-11-25 15:29:18,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:18" (1/1) ... [2022-11-25 15:29:18,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:18" (1/1) ... [2022-11-25 15:29:18,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:18" (1/1) ... [2022-11-25 15:29:18,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:18" (1/1) ... [2022-11-25 15:29:18,623 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:18" (1/1) ... [2022-11-25 15:29:18,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:18" (1/1) ... [2022-11-25 15:29:18,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:29:18,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:29:18,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:29:18,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:29:18,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:18" (1/1) ... [2022-11-25 15:29:18,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:29:18,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:18,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:18,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:29:18,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:29:18,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 15:29:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:29:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 15:29:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 15:29:18,744 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 15:29:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 15:29:18,745 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 15:29:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 15:29:18,745 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 15:29:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 15:29:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 15:29:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 15:29:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:29:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:29:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:29:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 15:29:18,748 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 15:29:18,905 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:29:18,907 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:29:19,955 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:29:20,268 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:29:20,268 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 15:29:20,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:29:20 BoogieIcfgContainer [2022-11-25 15:29:20,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:29:20,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:29:20,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:29:20,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:29:20,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:29:17" (1/3) ... [2022-11-25 15:29:20,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22efe051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:29:20, skipping insertion in model container [2022-11-25 15:29:20,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:18" (2/3) ... [2022-11-25 15:29:20,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22efe051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:29:20, skipping insertion in model container [2022-11-25 15:29:20,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:29:20" (3/3) ... [2022-11-25 15:29:20,284 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2022-11-25 15:29:20,302 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:29:20,302 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-11-25 15:29:20,303 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:29:20,469 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 15:29:20,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 300 transitions, 624 flow [2022-11-25 15:29:20,623 INFO L130 PetriNetUnfolder]: 27/297 cut-off events. [2022-11-25 15:29:20,623 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 15:29:20,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 297 events. 27/297 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 304 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 243. Up to 6 conditions per place. [2022-11-25 15:29:20,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 300 transitions, 624 flow [2022-11-25 15:29:20,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 292 transitions, 602 flow [2022-11-25 15:29:20,659 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:29:20,683 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 292 transitions, 602 flow [2022-11-25 15:29:20,687 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 292 transitions, 602 flow [2022-11-25 15:29:20,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 292 transitions, 602 flow [2022-11-25 15:29:20,758 INFO L130 PetriNetUnfolder]: 27/292 cut-off events. [2022-11-25 15:29:20,758 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 15:29:20,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 292 events. 27/292 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 305 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 243. Up to 6 conditions per place. [2022-11-25 15:29:20,763 INFO L119 LiptonReduction]: Number of co-enabled transitions 4670 [2022-11-25 15:30:07,028 WARN L233 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 149 DAG size of output: 148 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 15:30:15,276 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 155 DAG size of output: 154 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 15:30:16,964 INFO L134 LiptonReduction]: Checked pairs total: 5985 [2022-11-25 15:30:16,964 INFO L136 LiptonReduction]: Total number of compositions: 350 [2022-11-25 15:30:16,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:30:16,984 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6f04d067, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:30:16,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2022-11-25 15:30:16,988 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 15:30:16,989 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:30:16,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:30:16,989 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 15:30:16,990 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 15:30:16,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:30:16,995 INFO L85 PathProgramCache]: Analyzing trace with hash 47651, now seen corresponding path program 1 times [2022-11-25 15:30:17,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:30:17,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839742961] [2022-11-25 15:30:17,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:30:17,015 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:17,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:30:17,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:30:17,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 15:30:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:17,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 15:30:17,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:30:17,427 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 15:30:17,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-25 15:30:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:30:17,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:30:17,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:30:17,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839742961] [2022-11-25 15:30:17,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839742961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:30:17,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:30:17,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:30:17,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917473266] [2022-11-25 15:30:17,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:30:17,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:30:17,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:30:17,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:30:17,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:30:17,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 650 [2022-11-25 15:30:17,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2022-11-25 15:30:17,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:30:17,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 650 [2022-11-25 15:30:17,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:30:21,388 INFO L130 PetriNetUnfolder]: 9591/13392 cut-off events. [2022-11-25 15:30:21,389 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2022-11-25 15:30:21,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27159 conditions, 13392 events. 9591/13392 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 1277. Compared 73096 event pairs, 8098 based on Foata normal form. 0/2669 useless extension candidates. Maximal degree in co-relation 12540. Up to 6699 conditions per place. [2022-11-25 15:30:21,475 INFO L137 encePairwiseOnDemand]: 640/650 looper letters, 108 selfloop transitions, 6 changer transitions 0/114 dead transitions. [2022-11-25 15:30:21,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 114 transitions, 492 flow [2022-11-25 15:30:21,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:30:21,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:30:21,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 842 transitions. [2022-11-25 15:30:21,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4317948717948718 [2022-11-25 15:30:21,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 842 transitions. [2022-11-25 15:30:21,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 842 transitions. [2022-11-25 15:30:21,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:30:21,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 842 transitions. [2022-11-25 15:30:21,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 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) [2022-11-25 15:30:21,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 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) [2022-11-25 15:30:21,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 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) [2022-11-25 15:30:21,522 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 138 flow. Second operand 3 states and 842 transitions. [2022-11-25 15:30:21,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 114 transitions, 492 flow [2022-11-25 15:30:21,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 114 transitions, 468 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 15:30:21,537 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 174 flow [2022-11-25 15:30:21,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=650, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2022-11-25 15:30:21,543 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, -3 predicate places. [2022-11-25 15:30:21,543 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 174 flow [2022-11-25 15:30:21,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2022-11-25 15:30:21,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:30:21,544 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 15:30:21,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-25 15:30:21,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:21,756 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 15:30:21,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:30:21,757 INFO L85 PathProgramCache]: Analyzing trace with hash 47650, now seen corresponding path program 1 times [2022-11-25 15:30:21,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:30:21,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956512416] [2022-11-25 15:30:21,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:30:21,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:21,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:30:21,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:30:21,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 15:30:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:21,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:30:21,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:30:21,936 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-25 15:30:21,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-25 15:30:21,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:30:21,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:30:21,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:30:21,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956512416] [2022-11-25 15:30:21,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956512416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:30:21,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:30:21,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:30:21,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776309973] [2022-11-25 15:30:21,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:30:21,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:30:21,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:30:21,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:30:21,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:30:22,132 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 650 [2022-11-25 15:30:22,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2022-11-25 15:30:22,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:30:22,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 650 [2022-11-25 15:30:22,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:30:25,096 INFO L130 PetriNetUnfolder]: 9591/13386 cut-off events. [2022-11-25 15:30:25,096 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:30:25,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26938 conditions, 13386 events. 9591/13386 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1461. Compared 74369 event pairs, 8098 based on Foata normal form. 4/2679 useless extension candidates. Maximal degree in co-relation 13449. Up to 13386 conditions per place. [2022-11-25 15:30:25,182 INFO L137 encePairwiseOnDemand]: 646/650 looper letters, 60 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2022-11-25 15:30:25,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 290 flow [2022-11-25 15:30:25,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:30:25,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:30:25,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 782 transitions. [2022-11-25 15:30:25,185 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40102564102564103 [2022-11-25 15:30:25,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 782 transitions. [2022-11-25 15:30:25,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 782 transitions. [2022-11-25 15:30:25,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:30:25,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 782 transitions. [2022-11-25 15:30:25,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 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) [2022-11-25 15:30:25,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 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) [2022-11-25 15:30:25,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 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) [2022-11-25 15:30:25,196 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 174 flow. Second operand 3 states and 782 transitions. [2022-11-25 15:30:25,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 290 flow [2022-11-25 15:30:25,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 61 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:30:25,199 INFO L231 Difference]: Finished difference. Result has 58 places, 61 transitions, 158 flow [2022-11-25 15:30:25,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=650, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=58, PETRI_TRANSITIONS=61} [2022-11-25 15:30:25,200 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, -6 predicate places. [2022-11-25 15:30:25,201 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 61 transitions, 158 flow [2022-11-25 15:30:25,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2022-11-25 15:30:25,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:30:25,202 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 15:30:25,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:30:25,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:25,413 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 15:30:25,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:30:25,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1484253, now seen corresponding path program 1 times [2022-11-25 15:30:25,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:30:25,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621471991] [2022-11-25 15:30:25,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:30:25,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:25,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:30:25,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:30:25,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 15:30:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:25,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 15:30:25,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:30:25,663 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 15:30:25,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-25 15:30:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:30:25,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:30:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:30:25,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:30:25,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621471991] [2022-11-25 15:30:25,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621471991] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:30:25,985 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:30:25,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 15:30:25,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097673929] [2022-11-25 15:30:25,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:30:25,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:30:25,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:30:25,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:30:25,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:30:27,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 650 [2022-11-25 15:30:27,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 61 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 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) [2022-11-25 15:30:27,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:30:27,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 650 [2022-11-25 15:30:27,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:30:32,877 INFO L130 PetriNetUnfolder]: 14396/20093 cut-off events. [2022-11-25 15:30:32,877 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:30:32,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40433 conditions, 20093 events. 14396/20093 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2032. Compared 117303 event pairs, 12147 based on Foata normal form. 0/4014 useless extension candidates. Maximal degree in co-relation 40425. Up to 6697 conditions per place. [2022-11-25 15:30:32,976 INFO L137 encePairwiseOnDemand]: 638/650 looper letters, 149 selfloop transitions, 27 changer transitions 0/176 dead transitions. [2022-11-25 15:30:32,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 176 transitions, 782 flow [2022-11-25 15:30:32,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:30:32,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:30:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1541 transitions. [2022-11-25 15:30:32,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3951282051282051 [2022-11-25 15:30:32,982 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1541 transitions. [2022-11-25 15:30:32,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1541 transitions. [2022-11-25 15:30:32,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:30:32,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1541 transitions. [2022-11-25 15:30:32,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 256.8333333333333) internal successors, (1541), 6 states have internal predecessors, (1541), 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) [2022-11-25 15:30:32,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 650.0) internal successors, (4550), 7 states have internal predecessors, (4550), 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) [2022-11-25 15:30:32,998 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 650.0) internal successors, (4550), 7 states have internal predecessors, (4550), 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) [2022-11-25 15:30:32,998 INFO L175 Difference]: Start difference. First operand has 58 places, 61 transitions, 158 flow. Second operand 6 states and 1541 transitions. [2022-11-25 15:30:32,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 176 transitions, 782 flow [2022-11-25 15:30:33,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 176 transitions, 781 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:30:33,002 INFO L231 Difference]: Finished difference. Result has 66 places, 82 transitions, 361 flow [2022-11-25 15:30:33,003 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=650, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=361, PETRI_PLACES=66, PETRI_TRANSITIONS=82} [2022-11-25 15:30:33,003 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 2 predicate places. [2022-11-25 15:30:33,004 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 82 transitions, 361 flow [2022-11-25 15:30:33,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 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) [2022-11-25 15:30:33,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:30:33,005 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 15:30:33,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:30:33,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:33,228 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 15:30:33,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:30:33,228 INFO L85 PathProgramCache]: Analyzing trace with hash 46078848, now seen corresponding path program 1 times [2022-11-25 15:30:33,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:30:33,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195392210] [2022-11-25 15:30:33,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:30:33,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:33,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:30:33,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:30:33,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 15:30:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:33,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 15:30:33,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:30:33,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:30:33,503 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-11-25 15:30:33,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2022-11-25 15:30:33,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:30:33,851 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 15:30:33,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2022-11-25 15:30:34,286 INFO L321 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2022-11-25 15:30:34,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 76 [2022-11-25 15:30:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:30:34,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:30:34,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:30:34,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195392210] [2022-11-25 15:30:34,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195392210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:30:34,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:30:34,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:30:34,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696995996] [2022-11-25 15:30:34,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:30:34,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:30:34,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:30:34,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:30:34,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:30:35,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 650 [2022-11-25 15:30:35,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 82 transitions, 361 flow. Second operand has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 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) [2022-11-25 15:30:35,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:30:35,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 650 [2022-11-25 15:30:35,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:30:38,141 INFO L130 PetriNetUnfolder]: 11154/15768 cut-off events. [2022-11-25 15:30:38,141 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 15:30:38,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31857 conditions, 15768 events. 11154/15768 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 90580 event pairs, 9375 based on Foata normal form. 0/3557 useless extension candidates. Maximal degree in co-relation 31844. Up to 15768 conditions per place. [2022-11-25 15:30:38,226 INFO L137 encePairwiseOnDemand]: 647/650 looper letters, 77 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2022-11-25 15:30:38,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 497 flow [2022-11-25 15:30:38,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:30:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:30:38,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 800 transitions. [2022-11-25 15:30:38,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2022-11-25 15:30:38,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 800 transitions. [2022-11-25 15:30:38,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 800 transitions. [2022-11-25 15:30:38,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:30:38,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 800 transitions. [2022-11-25 15:30:38,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 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) [2022-11-25 15:30:38,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 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) [2022-11-25 15:30:38,239 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 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) [2022-11-25 15:30:38,239 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 361 flow. Second operand 3 states and 800 transitions. [2022-11-25 15:30:38,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 497 flow [2022-11-25 15:30:38,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 78 transitions, 467 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-25 15:30:38,242 INFO L231 Difference]: Finished difference. Result has 65 places, 78 transitions, 313 flow [2022-11-25 15:30:38,243 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=650, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=65, PETRI_TRANSITIONS=78} [2022-11-25 15:30:38,244 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2022-11-25 15:30:38,244 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 78 transitions, 313 flow [2022-11-25 15:30:38,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 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) [2022-11-25 15:30:38,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:30:38,245 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 15:30:38,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 15:30:38,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:38,457 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 15:30:38,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:30:38,458 INFO L85 PathProgramCache]: Analyzing trace with hash 46078849, now seen corresponding path program 1 times [2022-11-25 15:30:38,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:30:38,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246673198] [2022-11-25 15:30:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:30:38,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:38,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:30:38,460 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:30:38,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 15:30:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:38,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 15:30:38,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:30:38,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:30:38,893 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-11-25 15:30:38,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2022-11-25 15:30:38,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:30:38,989 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 15:30:38,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2022-11-25 15:30:39,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:30:39,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 15:30:39,113 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 15:30:39,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 15:30:39,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:30:39,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 15:30:39,195 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:30:39,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-25 15:30:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:30:39,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:30:39,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:30:39,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246673198] [2022-11-25 15:30:39,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246673198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:30:39,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:30:39,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:30:39,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506017871] [2022-11-25 15:30:39,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:30:39,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:30:39,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:30:39,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:30:39,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:30:39,859 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 650 [2022-11-25 15:30:39,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 78 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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) [2022-11-25 15:30:39,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:30:39,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 650 [2022-11-25 15:30:39,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:30:41,817 INFO L130 PetriNetUnfolder]: 7912/11443 cut-off events. [2022-11-25 15:30:41,817 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-25 15:30:41,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23181 conditions, 11443 events. 7912/11443 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 65212 event pairs, 6603 based on Foata normal form. 0/3089 useless extension candidates. Maximal degree in co-relation 23167. Up to 11443 conditions per place. [2022-11-25 15:30:41,868 INFO L137 encePairwiseOnDemand]: 647/650 looper letters, 73 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2022-11-25 15:30:41,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 74 transitions, 441 flow [2022-11-25 15:30:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:30:41,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:30:41,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 786 transitions. [2022-11-25 15:30:41,872 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40307692307692305 [2022-11-25 15:30:41,872 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 786 transitions. [2022-11-25 15:30:41,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 786 transitions. [2022-11-25 15:30:41,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:30:41,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 786 transitions. [2022-11-25 15:30:41,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 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) [2022-11-25 15:30:41,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 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) [2022-11-25 15:30:41,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 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) [2022-11-25 15:30:41,881 INFO L175 Difference]: Start difference. First operand has 65 places, 78 transitions, 313 flow. Second operand 3 states and 786 transitions. [2022-11-25 15:30:41,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 74 transitions, 441 flow [2022-11-25 15:30:41,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 74 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:30:41,884 INFO L231 Difference]: Finished difference. Result has 64 places, 74 transitions, 294 flow [2022-11-25 15:30:41,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=650, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=64, PETRI_TRANSITIONS=74} [2022-11-25 15:30:41,885 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2022-11-25 15:30:41,885 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 74 transitions, 294 flow [2022-11-25 15:30:41,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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) [2022-11-25 15:30:41,886 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:30:41,886 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 15:30:41,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:30:42,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:42,098 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 15:30:42,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:30:42,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1274730659, now seen corresponding path program 2 times [2022-11-25 15:30:42,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:30:42,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655956231] [2022-11-25 15:30:42,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:30:42,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:42,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:30:42,101 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:30:42,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-25 15:30:42,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:30:42,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:30:42,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 15:30:42,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:30:42,379 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 15:30:42,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-25 15:30:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:30:42,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:30:43,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:30:43,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:30:43,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655956231] [2022-11-25 15:30:43,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655956231] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:30:43,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:30:43,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-25 15:30:43,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871851725] [2022-11-25 15:30:43,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:30:43,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 15:30:43,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:30:43,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 15:30:43,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:30:48,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 650 [2022-11-25 15:30:48,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 74 transitions, 294 flow. Second operand has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 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) [2022-11-25 15:30:48,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:30:48,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 650 [2022-11-25 15:30:48,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:30:52,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:30:54,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:30:55,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:30:57,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:31:00,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:31:01,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:31:03,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:31:05,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:31:07,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:31:09,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:31:11,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:31:14,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:31:24,765 INFO L130 PetriNetUnfolder]: 23721/34295 cut-off events. [2022-11-25 15:31:24,765 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2022-11-25 15:31:24,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69380 conditions, 34295 events. 23721/34295 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 211532 event pairs, 19809 based on Foata normal form. 17/9242 useless extension candidates. Maximal degree in co-relation 69365. Up to 3827 conditions per place. [2022-11-25 15:31:24,931 INFO L137 encePairwiseOnDemand]: 640/650 looper letters, 395 selfloop transitions, 51 changer transitions 0/446 dead transitions. [2022-11-25 15:31:24,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 446 transitions, 2122 flow [2022-11-25 15:31:24,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:31:24,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 15:31:24,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3211 transitions. [2022-11-25 15:31:24,941 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4116666666666667 [2022-11-25 15:31:24,942 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3211 transitions. [2022-11-25 15:31:24,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3211 transitions. [2022-11-25 15:31:24,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:31:24,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3211 transitions. [2022-11-25 15:31:24,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 267.5833333333333) internal successors, (3211), 12 states have internal predecessors, (3211), 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) [2022-11-25 15:31:24,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 650.0) internal successors, (8450), 13 states have internal predecessors, (8450), 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) [2022-11-25 15:31:24,967 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 650.0) internal successors, (8450), 13 states have internal predecessors, (8450), 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) [2022-11-25 15:31:24,968 INFO L175 Difference]: Start difference. First operand has 64 places, 74 transitions, 294 flow. Second operand 12 states and 3211 transitions. [2022-11-25 15:31:24,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 446 transitions, 2122 flow [2022-11-25 15:31:24,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 446 transitions, 2121 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:31:24,977 INFO L231 Difference]: Finished difference. Result has 81 places, 104 transitions, 671 flow [2022-11-25 15:31:24,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=650, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=671, PETRI_PLACES=81, PETRI_TRANSITIONS=104} [2022-11-25 15:31:24,981 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 17 predicate places. [2022-11-25 15:31:24,981 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 104 transitions, 671 flow [2022-11-25 15:31:24,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 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) [2022-11-25 15:31:24,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:31:24,983 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:31:24,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:31:25,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:31:25,195 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 15:31:25,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:25,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1332137721, now seen corresponding path program 1 times [2022-11-25 15:31:25,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:31:25,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623306700] [2022-11-25 15:31:25,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:25,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:31:25,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:31:25,198 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:31:25,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-25 15:31:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:25,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:31:25,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:31:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:31:25,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:31:25,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:31:25,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623306700] [2022-11-25 15:31:25,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623306700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:25,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:25,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:31:25,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491368379] [2022-11-25 15:31:25,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:25,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:31:25,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:31:25,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:31:25,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:31:25,347 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 650 [2022-11-25 15:31:25,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 104 transitions, 671 flow. Second operand has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 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) [2022-11-25 15:31:25,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:31:25,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 650 [2022-11-25 15:31:25,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:31:33,580 INFO L130 PetriNetUnfolder]: 32505/46409 cut-off events. [2022-11-25 15:31:33,580 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2022-11-25 15:31:33,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93849 conditions, 46409 events. 32505/46409 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 1499. Compared 312245 event pairs, 8793 based on Foata normal form. 0/12783 useless extension candidates. Maximal degree in co-relation 93826. Up to 29143 conditions per place. [2022-11-25 15:31:33,813 INFO L137 encePairwiseOnDemand]: 640/650 looper letters, 135 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2022-11-25 15:31:33,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 139 transitions, 1024 flow [2022-11-25 15:31:33,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:31:33,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:31:33,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 843 transitions. [2022-11-25 15:31:33,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4323076923076923 [2022-11-25 15:31:33,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 843 transitions. [2022-11-25 15:31:33,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 843 transitions. [2022-11-25 15:31:33,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:31:33,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 843 transitions. [2022-11-25 15:31:33,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 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) [2022-11-25 15:31:33,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 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) [2022-11-25 15:31:33,824 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 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) [2022-11-25 15:31:33,824 INFO L175 Difference]: Start difference. First operand has 81 places, 104 transitions, 671 flow. Second operand 3 states and 843 transitions. [2022-11-25 15:31:33,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 139 transitions, 1024 flow [2022-11-25 15:31:33,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 139 transitions, 929 flow, removed 22 selfloop flow, removed 4 redundant places. [2022-11-25 15:31:33,830 INFO L231 Difference]: Finished difference. Result has 81 places, 107 transitions, 616 flow [2022-11-25 15:31:33,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=650, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=616, PETRI_PLACES=81, PETRI_TRANSITIONS=107} [2022-11-25 15:31:33,831 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 17 predicate places. [2022-11-25 15:31:33,831 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 107 transitions, 616 flow [2022-11-25 15:31:33,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 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) [2022-11-25 15:31:33,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:31:33,832 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:33,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-25 15:31:34,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:31:34,044 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 15:31:34,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:34,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1653400523, now seen corresponding path program 1 times [2022-11-25 15:31:34,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:31:34,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837559095] [2022-11-25 15:31:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:34,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:31:34,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:31:34,047 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:31:34,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-25 15:31:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:34,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:31:34,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:31:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:31:34,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:31:34,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:31:34,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837559095] [2022-11-25 15:31:34,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837559095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:34,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:34,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:31:34,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594235278] [2022-11-25 15:31:34,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:34,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:31:34,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:31:34,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:31:34,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:31:34,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 650 [2022-11-25 15:31:34,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 107 transitions, 616 flow. Second operand has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 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) [2022-11-25 15:31:34,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:31:34,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 650 [2022-11-25 15:31:34,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:31:44,049 INFO L130 PetriNetUnfolder]: 38085/54887 cut-off events. [2022-11-25 15:31:44,049 INFO L131 PetriNetUnfolder]: For 10456/10456 co-relation queries the response was YES. [2022-11-25 15:31:44,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123728 conditions, 54887 events. 38085/54887 cut-off events. For 10456/10456 co-relation queries the response was YES. Maximal size of possible extension queue 2015. Compared 373155 event pairs, 12969 based on Foata normal form. 1800/21299 useless extension candidates. Maximal degree in co-relation 123702. Up to 46369 conditions per place. [2022-11-25 15:31:44,389 INFO L137 encePairwiseOnDemand]: 644/650 looper letters, 132 selfloop transitions, 3 changer transitions 0/135 dead transitions. [2022-11-25 15:31:44,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 135 transitions, 946 flow [2022-11-25 15:31:44,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:31:44,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:31:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 830 transitions. [2022-11-25 15:31:44,394 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4256410256410256 [2022-11-25 15:31:44,394 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 830 transitions. [2022-11-25 15:31:44,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 830 transitions. [2022-11-25 15:31:44,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:31:44,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 830 transitions. [2022-11-25 15:31:44,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 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) [2022-11-25 15:31:44,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 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) [2022-11-25 15:31:44,401 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 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) [2022-11-25 15:31:44,401 INFO L175 Difference]: Start difference. First operand has 81 places, 107 transitions, 616 flow. Second operand 3 states and 830 transitions. [2022-11-25 15:31:44,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 135 transitions, 946 flow [2022-11-25 15:31:44,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 135 transitions, 938 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:31:44,514 INFO L231 Difference]: Finished difference. Result has 82 places, 109 transitions, 631 flow [2022-11-25 15:31:44,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=650, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=631, PETRI_PLACES=82, PETRI_TRANSITIONS=109} [2022-11-25 15:31:44,515 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 18 predicate places. [2022-11-25 15:31:44,515 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 109 transitions, 631 flow [2022-11-25 15:31:44,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 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) [2022-11-25 15:31:44,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:31:44,516 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:31:44,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-25 15:31:44,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:31:44,730 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 15:31:44,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:44,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1332137712, now seen corresponding path program 1 times [2022-11-25 15:31:44,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:31:44,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615580922] [2022-11-25 15:31:44,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:44,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:31:44,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:31:44,733 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:31:44,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f481ec-3ac5-44ad-8f5d-b9904e14a984/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-25 15:31:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:44,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 15:31:44,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:31:44,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:31:44,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:31:45,004 INFO L321 Elim1Store]: treesize reduction 49, result has 33.8 percent of original size [2022-11-25 15:31:45,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 35 [2022-11-25 15:31:45,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-25 15:31:45,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:31:45,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 15:31:45,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:31:45,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 15:31:45,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:31:45,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:31:45,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:31:45,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615580922] [2022-11-25 15:31:45,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615580922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:45,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:45,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:31:45,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801596191] [2022-11-25 15:31:45,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:45,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:31:45,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:31:45,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:31:45,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:31:45,523 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 650 [2022-11-25 15:31:45,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 109 transitions, 631 flow. Second operand has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 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) [2022-11-25 15:31:45,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:31:45,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 650 [2022-11-25 15:31:45,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand