./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8 --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 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --- 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-2329fc7 [2022-12-13 21:29:53,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:29:53,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:29:53,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:29:53,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:29:53,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:29:53,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:29:53,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:29:53,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:29:53,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:29:53,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:29:53,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:29:53,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:29:53,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:29:53,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:29:53,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:29:53,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:29:53,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:29:53,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:29:53,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:29:53,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:29:53,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:29:53,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:29:53,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:29:53,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:29:53,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:29:53,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:29:53,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:29:53,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:29:53,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:29:53,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:29:53,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:29:53,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:29:53,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:29:53,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:29:53,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:29:53,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:29:53,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:29:53,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:29:53,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:29:53,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:29:53,568 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 21:29:53,589 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:29:53,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:29:53,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:29:53,589 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:29:53,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:29:53,590 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:29:53,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:29:53,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:29:53,591 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:29:53,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:29:53,592 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:29:53,592 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:29:53,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:29:53,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:29:53,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:29:53,592 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:29:53,592 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:29:53,592 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:29:53,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:29:53,593 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:29:53,593 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:29:53,593 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:29:53,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:29:53,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:29:53,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:29:53,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:29:53,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:29:53,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:29:53,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:29:53,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:29:53,594 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:29:53,594 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:29:53,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:29:53,594 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:29:53,594 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_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 [2022-12-13 21:29:53,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:29:53,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:29:53,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:29:53,773 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:29:53,774 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:29:53,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-12-13 21:29:56,339 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:29:56,485 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:29:56,485 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-12-13 21:29:56,491 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/data/8c7864cc5/4752061d39924ffe81228833e658e2b1/FLAG8acb0d43c [2022-12-13 21:29:56,501 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/data/8c7864cc5/4752061d39924ffe81228833e658e2b1 [2022-12-13 21:29:56,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:29:56,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:29:56,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:29:56,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:29:56,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:29:56,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:29:56" (1/1) ... [2022-12-13 21:29:56,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10604400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:29:56, skipping insertion in model container [2022-12-13 21:29:56,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:29:56" (1/1) ... [2022-12-13 21:29:56,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:29:56,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:29:56,718 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_0e5f9d61-ce10-43e0-a641-675e9518ad1b/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-12-13 21:29:56,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:29:56,740 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) [2022-12-13 21:29:56,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@53d3e2ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:29:56, skipping insertion in model container [2022-12-13 21:29:56,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:29:56,741 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 21:29:56,743 INFO L158 Benchmark]: Toolchain (without parser) took 238.04ms. Allocated memory is still 140.5MB. Free memory was 96.1MB in the beginning and 85.5MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 21:29:56,743 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 140.5MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:29:56,744 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.80ms. Allocated memory is still 140.5MB. Free memory was 95.9MB in the beginning and 85.7MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 21:29:56,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 140.5MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.80ms. Allocated memory is still 140.5MB. Free memory was 95.9MB in the beginning and 85.7MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 151]: 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8 --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 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --- 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-2329fc7 [2022-12-13 21:29:58,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:29:58,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:29:58,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:29:58,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:29:58,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:29:58,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:29:58,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:29:58,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:29:58,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:29:58,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:29:58,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:29:58,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:29:58,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:29:58,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:29:58,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:29:58,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:29:58,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:29:58,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:29:58,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:29:58,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:29:58,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:29:58,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:29:58,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:29:58,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:29:58,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:29:58,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:29:58,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:29:58,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:29:58,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:29:58,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:29:58,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:29:58,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:29:58,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:29:58,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:29:58,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:29:58,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:29:58,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:29:58,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:29:58,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:29:58,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:29:58,253 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 21:29:58,276 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:29:58,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:29:58,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:29:58,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:29:58,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:29:58,278 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:29:58,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:29:58,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:29:58,279 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:29:58,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:29:58,279 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:29:58,279 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:29:58,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:29:58,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:29:58,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:29:58,280 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:29:58,280 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:29:58,280 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:29:58,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:29:58,281 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:29:58,281 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 21:29:58,281 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 21:29:58,281 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:29:58,281 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:29:58,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:29:58,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:29:58,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:29:58,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:29:58,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:29:58,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:29:58,282 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 21:29:58,282 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 21:29:58,282 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:29:58,282 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:29:58,283 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:29:58,283 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 21:29:58,283 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:29:58,283 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_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 [2022-12-13 21:29:58,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:29:58,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:29:58,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:29:58,551 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:29:58,551 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:29:58,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-12-13 21:30:01,198 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:30:01,354 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:30:01,354 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-12-13 21:30:01,360 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/data/26dea4234/611cd39809d14470a0b2f7356dd8a37c/FLAG6c1ea644b [2022-12-13 21:30:01,371 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/data/26dea4234/611cd39809d14470a0b2f7356dd8a37c [2022-12-13 21:30:01,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:30:01,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:30:01,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:30:01,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:30:01,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:30:01,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:30:01" (1/1) ... [2022-12-13 21:30:01,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd3f368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:01, skipping insertion in model container [2022-12-13 21:30:01,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:30:01" (1/1) ... [2022-12-13 21:30:01,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:30:01,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:30:01,531 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_0e5f9d61-ce10-43e0-a641-675e9518ad1b/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-12-13 21:30:01,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:30:01,549 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 21:30:01,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:30:01,567 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_0e5f9d61-ce10-43e0-a641-675e9518ad1b/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-12-13 21:30:01,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:30:01,581 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:30:01,613 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_0e5f9d61-ce10-43e0-a641-675e9518ad1b/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-12-13 21:30:01,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:30:01,627 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:30:01,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:01 WrapperNode [2022-12-13 21:30:01,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:30:01,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:30:01,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:30:01,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:30:01,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:01" (1/1) ... [2022-12-13 21:30:01,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:01" (1/1) ... [2022-12-13 21:30:01,677 INFO L138 Inliner]: procedures = 28, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 278 [2022-12-13 21:30:01,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:30:01,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:30:01,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:30:01,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:30:01,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:01" (1/1) ... [2022-12-13 21:30:01,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:01" (1/1) ... [2022-12-13 21:30:01,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:01" (1/1) ... [2022-12-13 21:30:01,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:01" (1/1) ... [2022-12-13 21:30:01,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:01" (1/1) ... [2022-12-13 21:30:01,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:01" (1/1) ... [2022-12-13 21:30:01,715 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:01" (1/1) ... [2022-12-13 21:30:01,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:01" (1/1) ... [2022-12-13 21:30:01,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:30:01,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:30:01,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:30:01,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:30:01,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:01" (1/1) ... [2022-12-13 21:30:01,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:30:01,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:30:01,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:30:01,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:30:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:30:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 21:30:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:30:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 21:30:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 21:30:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 21:30:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 21:30:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 21:30:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 21:30:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 21:30:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:30:01,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:30:01,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:30:01,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:30:01,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 21:30:01,796 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 21:30:01,907 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:30:01,909 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:30:02,419 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:30:02,429 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:30:02,429 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 21:30:02,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:30:02 BoogieIcfgContainer [2022-12-13 21:30:02,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:30:02,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:30:02,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:30:02,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:30:02,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:30:01" (1/3) ... [2022-12-13 21:30:02,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75078002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:30:02, skipping insertion in model container [2022-12-13 21:30:02,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:01" (2/3) ... [2022-12-13 21:30:02,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75078002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:30:02, skipping insertion in model container [2022-12-13 21:30:02,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:30:02" (3/3) ... [2022-12-13 21:30:02,438 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2022-12-13 21:30:02,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:30:02,452 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-12-13 21:30:02,452 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:30:02,527 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 21:30:02,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 364 places, 380 transitions, 784 flow [2022-12-13 21:30:02,682 INFO L130 PetriNetUnfolder]: 26/377 cut-off events. [2022-12-13 21:30:02,682 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 21:30:02,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 377 events. 26/377 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 993 event pairs, 0 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 269. Up to 2 conditions per place. [2022-12-13 21:30:02,690 INFO L82 GeneralOperation]: Start removeDead. Operand has 364 places, 380 transitions, 784 flow [2022-12-13 21:30:02,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 356 places, 372 transitions, 762 flow [2022-12-13 21:30:02,701 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:30:02,712 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 356 places, 372 transitions, 762 flow [2022-12-13 21:30:02,715 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 356 places, 372 transitions, 762 flow [2022-12-13 21:30:02,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 356 places, 372 transitions, 762 flow [2022-12-13 21:30:02,780 INFO L130 PetriNetUnfolder]: 26/372 cut-off events. [2022-12-13 21:30:02,780 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 21:30:02,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 372 events. 26/372 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 992 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 269. Up to 2 conditions per place. [2022-12-13 21:30:02,794 INFO L119 LiptonReduction]: Number of co-enabled transitions 37914 [2022-12-13 21:30:33,917 INFO L134 LiptonReduction]: Checked pairs total: 33999 [2022-12-13 21:30:33,918 INFO L136 LiptonReduction]: Total number of compositions: 437 [2022-12-13 21:30:33,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:30:33,937 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;@3da1cf70, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:30:33,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-12-13 21:30:33,939 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 21:30:33,940 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:30:33,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:33,940 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:30:33,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:30:33,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:33,944 INFO L85 PathProgramCache]: Analyzing trace with hash 49514, now seen corresponding path program 1 times [2022-12-13 21:30:33,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:30:33,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562446397] [2022-12-13 21:30:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:33,955 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 [2022-12-13 21:30:33,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:30:33,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:30:33,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:34,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 21:30:34,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:34,189 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 21:30:34,190 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 42 [2022-12-13 21:30:34,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:30:34,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:30:34,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:30:34,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562446397] [2022-12-13 21:30:34,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562446397] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:34,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:34,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:30:34,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330065775] [2022-12-13 21:30:34,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:34,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:30:34,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:30:34,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:30:34,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:30:34,411 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 817 [2022-12-13 21:30:34,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 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) [2022-12-13 21:30:34,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:34,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 817 [2022-12-13 21:30:34,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:35,563 INFO L130 PetriNetUnfolder]: 3633/5128 cut-off events. [2022-12-13 21:30:35,563 INFO L131 PetriNetUnfolder]: For 178/178 co-relation queries the response was YES. [2022-12-13 21:30:35,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10447 conditions, 5128 events. 3633/5128 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 23329 event pairs, 2856 based on Foata normal form. 0/2051 useless extension candidates. Maximal degree in co-relation 4490. Up to 2566 conditions per place. [2022-12-13 21:30:35,585 INFO L137 encePairwiseOnDemand]: 813/817 looper letters, 84 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2022-12-13 21:30:35,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 86 transitions, 380 flow [2022-12-13 21:30:35,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:30:35,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:30:35,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1127 transitions. [2022-12-13 21:30:35,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.459812321501428 [2022-12-13 21:30:35,599 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1127 transitions. [2022-12-13 21:30:35,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1127 transitions. [2022-12-13 21:30:35,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:35,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1127 transitions. [2022-12-13 21:30:35,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 375.6666666666667) internal successors, (1127), 3 states have internal predecessors, (1127), 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) [2022-12-13 21:30:35,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:35,615 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:35,616 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 108 flow. Second operand 3 states and 1127 transitions. [2022-12-13 21:30:35,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 86 transitions, 380 flow [2022-12-13 21:30:35,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 86 transitions, 356 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 21:30:35,622 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 106 flow [2022-12-13 21:30:35,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2022-12-13 21:30:35,626 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2022-12-13 21:30:35,626 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 106 flow [2022-12-13 21:30:35,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 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) [2022-12-13 21:30:35,627 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:35,627 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:30:35,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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)] Forceful destruction successful, exit code 0 [2022-12-13 21:30:35,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:35,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:30:35,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:35,829 INFO L85 PathProgramCache]: Analyzing trace with hash 49720, now seen corresponding path program 1 times [2022-12-13 21:30:35,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:30:35,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373954583] [2022-12-13 21:30:35,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:35,830 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 [2022-12-13 21:30:35,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:30:35,831 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:30:35,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:35,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:30:35,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:30:35,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:30:35,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:30:35,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373954583] [2022-12-13 21:30:35,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373954583] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:35,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:35,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:30:35,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166555853] [2022-12-13 21:30:35,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:35,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:30:35,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:30:35,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:30:35,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:30:35,984 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 817 [2022-12-13 21:30:35,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 350.6666666666667) internal successors, (1052), 3 states have internal predecessors, (1052), 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) [2022-12-13 21:30:35,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:35,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 817 [2022-12-13 21:30:35,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:36,470 INFO L130 PetriNetUnfolder]: 1817/2567 cut-off events. [2022-12-13 21:30:36,470 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-12-13 21:30:36,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5174 conditions, 2567 events. 1817/2567 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10395 event pairs, 1428 based on Foata normal form. 0/1029 useless extension candidates. Maximal degree in co-relation 5161. Up to 2566 conditions per place. [2022-12-13 21:30:36,482 INFO L137 encePairwiseOnDemand]: 812/817 looper letters, 44 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2022-12-13 21:30:36,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 200 flow [2022-12-13 21:30:36,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:30:36,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:30:36,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1099 transitions. [2022-12-13 21:30:36,488 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4483884128926969 [2022-12-13 21:30:36,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1099 transitions. [2022-12-13 21:30:36,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1099 transitions. [2022-12-13 21:30:36,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:36,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1099 transitions. [2022-12-13 21:30:36,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 366.3333333333333) internal successors, (1099), 3 states have internal predecessors, (1099), 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) [2022-12-13 21:30:36,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:36,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:36,496 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 106 flow. Second operand 3 states and 1099 transitions. [2022-12-13 21:30:36,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 200 flow [2022-12-13 21:30:36,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:30:36,498 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 116 flow [2022-12-13 21:30:36,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2022-12-13 21:30:36,499 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2022-12-13 21:30:36,499 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 116 flow [2022-12-13 21:30:36,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 350.6666666666667) internal successors, (1052), 3 states have internal predecessors, (1052), 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) [2022-12-13 21:30:36,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:36,500 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:30:36,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 21:30:36,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:36,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:30:36,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:36,702 INFO L85 PathProgramCache]: Analyzing trace with hash 49513, now seen corresponding path program 1 times [2022-12-13 21:30:36,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:30:36,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533206559] [2022-12-13 21:30:36,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:36,702 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 [2022-12-13 21:30:36,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:30:36,703 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:30:36,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:36,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:30:36,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:36,801 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-12-13 21:30:36,802 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 [2022-12-13 21:30:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:30:36,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:30:36,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:30:36,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533206559] [2022-12-13 21:30:36,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533206559] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:36,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:36,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:30:36,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082227825] [2022-12-13 21:30:36,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:36,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:30:36,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:30:36,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:30:36,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:30:36,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 817 [2022-12-13 21:30:36,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 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) [2022-12-13 21:30:36,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:36,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 817 [2022-12-13 21:30:36,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:37,332 INFO L130 PetriNetUnfolder]: 1817/2565 cut-off events. [2022-12-13 21:30:37,332 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-12-13 21:30:37,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5176 conditions, 2565 events. 1817/2565 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10365 event pairs, 1428 based on Foata normal form. 2/1030 useless extension candidates. Maximal degree in co-relation 5162. Up to 2565 conditions per place. [2022-12-13 21:30:37,352 INFO L137 encePairwiseOnDemand]: 815/817 looper letters, 43 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2022-12-13 21:30:37,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 202 flow [2022-12-13 21:30:37,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:30:37,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:30:37,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1085 transitions. [2022-12-13 21:30:37,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44267645858833127 [2022-12-13 21:30:37,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1085 transitions. [2022-12-13 21:30:37,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1085 transitions. [2022-12-13 21:30:37,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:37,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1085 transitions. [2022-12-13 21:30:37,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 361.6666666666667) internal successors, (1085), 3 states have internal predecessors, (1085), 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) [2022-12-13 21:30:37,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:37,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:37,374 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 116 flow. Second operand 3 states and 1085 transitions. [2022-12-13 21:30:37,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 202 flow [2022-12-13 21:30:37,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 196 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 21:30:37,376 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 110 flow [2022-12-13 21:30:37,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2022-12-13 21:30:37,377 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2022-12-13 21:30:37,377 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 110 flow [2022-12-13 21:30:37,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 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) [2022-12-13 21:30:37,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:37,379 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:30:37,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 21:30:37,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:37,580 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:30:37,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:37,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1541482, now seen corresponding path program 1 times [2022-12-13 21:30:37,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:30:37,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904400945] [2022-12-13 21:30:37,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:37,583 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 [2022-12-13 21:30:37,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:30:37,586 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:30:37,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:37,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:30:37,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:37,768 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 21:30:37,768 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 42 [2022-12-13 21:30:37,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:30:37,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:30:37,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:30:37,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:30:37,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904400945] [2022-12-13 21:30:37,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904400945] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:30:37,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:30:37,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-13 21:30:37,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537738575] [2022-12-13 21:30:37,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:30:37,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:30:37,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:30:37,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:30:37,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:30:38,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 817 [2022-12-13 21:30:38,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 110 flow. Second operand has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:30:38,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:38,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 817 [2022-12-13 21:30:38,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:40,254 INFO L130 PetriNetUnfolder]: 5449/7689 cut-off events. [2022-12-13 21:30:40,254 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-12-13 21:30:40,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15492 conditions, 7689 events. 5449/7689 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 37693 event pairs, 4284 based on Foata normal form. 0/3080 useless extension candidates. Maximal degree in co-relation 15483. Up to 2565 conditions per place. [2022-12-13 21:30:40,280 INFO L137 encePairwiseOnDemand]: 814/817 looper letters, 122 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2022-12-13 21:30:40,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 126 transitions, 554 flow [2022-12-13 21:30:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:30:40,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:30:40,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1848 transitions. [2022-12-13 21:30:40,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45238678090575274 [2022-12-13 21:30:40,283 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1848 transitions. [2022-12-13 21:30:40,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1848 transitions. [2022-12-13 21:30:40,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:40,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1848 transitions. [2022-12-13 21:30:40,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 369.6) internal successors, (1848), 5 states have internal predecessors, (1848), 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) [2022-12-13 21:30:40,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 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) [2022-12-13 21:30:40,291 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 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) [2022-12-13 21:30:40,291 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 110 flow. Second operand 5 states and 1848 transitions. [2022-12-13 21:30:40,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 126 transitions, 554 flow [2022-12-13 21:30:40,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 126 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:30:40,293 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 135 flow [2022-12-13 21:30:40,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2022-12-13 21:30:40,294 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2022-12-13 21:30:40,294 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 135 flow [2022-12-13 21:30:40,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:30:40,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:40,295 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:30:40,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:40,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:40,496 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:30:40,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:40,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1541688, now seen corresponding path program 1 times [2022-12-13 21:30:40,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:30:40,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384333306] [2022-12-13 21:30:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:40,500 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 [2022-12-13 21:30:40,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:30:40,503 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:30:40,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:40,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:30:40,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:30:40,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:30:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:30:40,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:30:40,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384333306] [2022-12-13 21:30:40,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384333306] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:30:40,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:30:40,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-13 21:30:40,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620060671] [2022-12-13 21:30:40,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:30:40,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:30:40,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:30:40,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:30:40,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:30:40,760 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 817 [2022-12-13 21:30:40,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 135 flow. Second operand has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 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) [2022-12-13 21:30:40,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:40,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 817 [2022-12-13 21:30:40,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:41,261 INFO L130 PetriNetUnfolder]: 1817/2567 cut-off events. [2022-12-13 21:30:41,261 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-12-13 21:30:41,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5191 conditions, 2567 events. 1817/2567 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10317 event pairs, 1428 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 5179. Up to 2564 conditions per place. [2022-12-13 21:30:41,268 INFO L137 encePairwiseOnDemand]: 811/817 looper letters, 41 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2022-12-13 21:30:41,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 46 transitions, 227 flow [2022-12-13 21:30:41,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:30:41,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:30:41,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1792 transitions. [2022-12-13 21:30:41,271 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4386780905752754 [2022-12-13 21:30:41,271 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1792 transitions. [2022-12-13 21:30:41,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1792 transitions. [2022-12-13 21:30:41,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:41,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1792 transitions. [2022-12-13 21:30:41,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 358.4) internal successors, (1792), 5 states have internal predecessors, (1792), 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) [2022-12-13 21:30:41,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 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) [2022-12-13 21:30:41,278 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 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) [2022-12-13 21:30:41,278 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 135 flow. Second operand 5 states and 1792 transitions. [2022-12-13 21:30:41,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 46 transitions, 227 flow [2022-12-13 21:30:41,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 46 transitions, 217 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 21:30:41,280 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 152 flow [2022-12-13 21:30:41,280 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2022-12-13 21:30:41,280 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2022-12-13 21:30:41,280 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 152 flow [2022-12-13 21:30:41,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 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) [2022-12-13 21:30:41,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:41,281 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1] [2022-12-13 21:30:41,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 21:30:41,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:41,482 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:30:41,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:41,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1481573738, now seen corresponding path program 2 times [2022-12-13 21:30:41,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:30:41,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121709679] [2022-12-13 21:30:41,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:30:41,483 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 [2022-12-13 21:30:41,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:30:41,485 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:30:41,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:41,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:30:41,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:30:41,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:30:41,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:41,686 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 21:30:41,687 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 [2022-12-13 21:30:41,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:30:41,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:30:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:30:42,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:30:42,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121709679] [2022-12-13 21:30:42,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121709679] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:30:42,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:30:42,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-12-13 21:30:42,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423596224] [2022-12-13 21:30:42,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:30:42,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:30:42,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:30:42,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:30:42,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:30:44,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 817 [2022-12-13 21:30:44,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 152 flow. Second operand has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 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) [2022-12-13 21:30:44,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:44,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 817 [2022-12-13 21:30:44,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:45,121 INFO L130 PetriNetUnfolder]: 1816/2565 cut-off events. [2022-12-13 21:30:45,122 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-12-13 21:30:45,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5192 conditions, 2565 events. 1816/2565 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10360 event pairs, 1428 based on Foata normal form. 2/1031 useless extension candidates. Maximal degree in co-relation 5177. Up to 2562 conditions per place. [2022-12-13 21:30:45,131 INFO L137 encePairwiseOnDemand]: 814/817 looper letters, 40 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2022-12-13 21:30:45,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 44 transitions, 223 flow [2022-12-13 21:30:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:30:45,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:30:45,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2092 transitions. [2022-12-13 21:30:45,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42676458588331295 [2022-12-13 21:30:45,136 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2092 transitions. [2022-12-13 21:30:45,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2092 transitions. [2022-12-13 21:30:45,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:45,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2092 transitions. [2022-12-13 21:30:45,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 348.6666666666667) internal successors, (2092), 6 states have internal predecessors, (2092), 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) [2022-12-13 21:30:45,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 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) [2022-12-13 21:30:45,149 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 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) [2022-12-13 21:30:45,149 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 152 flow. Second operand 6 states and 2092 transitions. [2022-12-13 21:30:45,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 44 transitions, 223 flow [2022-12-13 21:30:45,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 44 transitions, 207 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-13 21:30:45,151 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 127 flow [2022-12-13 21:30:45,151 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=127, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2022-12-13 21:30:45,151 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2022-12-13 21:30:45,152 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 127 flow [2022-12-13 21:30:45,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 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) [2022-12-13 21:30:45,153 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:45,153 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1] [2022-12-13 21:30:45,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 21:30:45,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:45,354 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:30:45,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:45,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1481573944, now seen corresponding path program 2 times [2022-12-13 21:30:45,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:30:45,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987898525] [2022-12-13 21:30:45,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:30:45,355 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 [2022-12-13 21:30:45,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:30:45,356 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:30:45,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:45,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 21:30:45,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:30:45,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:30:45,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:45,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:30:45,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:30:45,523 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-12-13 21:30:45,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-12-13 21:30:45,543 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-13 21:30:45,543 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 90 treesize of output 89 [2022-12-13 21:30:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:30:45,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:30:45,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:30:45,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987898525] [2022-12-13 21:30:45,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987898525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:45,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:45,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:30:45,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379647831] [2022-12-13 21:30:45,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:45,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:30:45,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:30:45,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:30:45,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:30:45,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 817 [2022-12-13 21:30:45,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 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) [2022-12-13 21:30:45,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:45,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 817 [2022-12-13 21:30:45,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:46,135 INFO L130 PetriNetUnfolder]: 1441/2064 cut-off events. [2022-12-13 21:30:46,135 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-13 21:30:46,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4179 conditions, 2064 events. 1441/2064 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8088 event pairs, 1128 based on Foata normal form. 0/879 useless extension candidates. Maximal degree in co-relation 4168. Up to 2064 conditions per place. [2022-12-13 21:30:46,141 INFO L137 encePairwiseOnDemand]: 814/817 looper letters, 41 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-12-13 21:30:46,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 42 transitions, 201 flow [2022-12-13 21:30:46,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:30:46,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:30:46,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1080 transitions. [2022-12-13 21:30:46,143 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44063647490820074 [2022-12-13 21:30:46,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1080 transitions. [2022-12-13 21:30:46,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1080 transitions. [2022-12-13 21:30:46,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:46,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1080 transitions. [2022-12-13 21:30:46,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 360.0) internal successors, (1080), 3 states have internal predecessors, (1080), 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) [2022-12-13 21:30:46,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:46,147 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:46,148 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 127 flow. Second operand 3 states and 1080 transitions. [2022-12-13 21:30:46,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 42 transitions, 201 flow [2022-12-13 21:30:46,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 194 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 21:30:46,149 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 112 flow [2022-12-13 21:30:46,149 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2022-12-13 21:30:46,149 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2022-12-13 21:30:46,149 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 112 flow [2022-12-13 21:30:46,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 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) [2022-12-13 21:30:46,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:46,150 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1] [2022-12-13 21:30:46,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 21:30:46,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:46,350 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:30:46,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:46,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1481573946, now seen corresponding path program 1 times [2022-12-13 21:30:46,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:30:46,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072497905] [2022-12-13 21:30:46,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:46,351 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 [2022-12-13 21:30:46,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:30:46,352 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:30:46,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:46,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 21:30:46,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:46,499 INFO L321 Elim1Store]: treesize reduction 115, result has 16.1 percent of original size [2022-12-13 21:30:46,499 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 6 case distinctions, treesize of input 38 treesize of output 47 [2022-12-13 21:30:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:30:46,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:30:46,616 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:30:46,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072497905] [2022-12-13 21:30:46,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072497905] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:46,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:46,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:30:46,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785519] [2022-12-13 21:30:46,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:46,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:30:46,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:30:46,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:30:46,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:30:46,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 817 [2022-12-13 21:30:46,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 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) [2022-12-13 21:30:46,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:46,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 817 [2022-12-13 21:30:46,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:47,150 INFO L130 PetriNetUnfolder]: 1066/1563 cut-off events. [2022-12-13 21:30:47,150 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-13 21:30:47,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3172 conditions, 1563 events. 1066/1563 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5945 event pairs, 828 based on Foata normal form. 0/729 useless extension candidates. Maximal degree in co-relation 3161. Up to 1563 conditions per place. [2022-12-13 21:30:47,154 INFO L137 encePairwiseOnDemand]: 814/817 looper letters, 39 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2022-12-13 21:30:47,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 182 flow [2022-12-13 21:30:47,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:30:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:30:47,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1081 transitions. [2022-12-13 21:30:47,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44104447164422683 [2022-12-13 21:30:47,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1081 transitions. [2022-12-13 21:30:47,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1081 transitions. [2022-12-13 21:30:47,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:47,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1081 transitions. [2022-12-13 21:30:47,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 360.3333333333333) internal successors, (1081), 3 states have internal predecessors, (1081), 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) [2022-12-13 21:30:47,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:47,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:47,161 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 112 flow. Second operand 3 states and 1081 transitions. [2022-12-13 21:30:47,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 182 flow [2022-12-13 21:30:47,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 40 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:30:47,161 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 103 flow [2022-12-13 21:30:47,162 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2022-12-13 21:30:47,162 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2022-12-13 21:30:47,162 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 103 flow [2022-12-13 21:30:47,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 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) [2022-12-13 21:30:47,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:47,162 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2022-12-13 21:30:47,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 21:30:47,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:47,364 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:30:47,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:47,365 INFO L85 PathProgramCache]: Analyzing trace with hash -2136546134, now seen corresponding path program 1 times [2022-12-13 21:30:47,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:30:47,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935246407] [2022-12-13 21:30:47,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:47,367 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 [2022-12-13 21:30:47,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:30:47,370 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:30:47,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:47,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 21:30:47,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:47,495 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-12-13 21:30:47,496 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 4 case distinctions, treesize of input 29 treesize of output 40 [2022-12-13 21:30:47,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:30:47,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:30:47,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:30:47,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935246407] [2022-12-13 21:30:47,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935246407] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:47,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:47,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:30:47,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068438693] [2022-12-13 21:30:47,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:47,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:30:47,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:30:47,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:30:47,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:30:47,753 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 817 [2022-12-13 21:30:47,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 348.6666666666667) internal successors, (1046), 3 states have internal predecessors, (1046), 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) [2022-12-13 21:30:47,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:47,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 817 [2022-12-13 21:30:47,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:48,039 INFO L130 PetriNetUnfolder]: 1011/1478 cut-off events. [2022-12-13 21:30:48,039 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-13 21:30:48,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3003 conditions, 1478 events. 1011/1478 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5539 event pairs, 784 based on Foata normal form. 0/707 useless extension candidates. Maximal degree in co-relation 2991. Up to 1478 conditions per place. [2022-12-13 21:30:48,043 INFO L137 encePairwiseOnDemand]: 814/817 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2022-12-13 21:30:48,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 38 transitions, 175 flow [2022-12-13 21:30:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:30:48,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:30:48,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1079 transitions. [2022-12-13 21:30:48,045 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44022847817217464 [2022-12-13 21:30:48,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1079 transitions. [2022-12-13 21:30:48,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1079 transitions. [2022-12-13 21:30:48,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:48,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1079 transitions. [2022-12-13 21:30:48,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 359.6666666666667) internal successors, (1079), 3 states have internal predecessors, (1079), 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) [2022-12-13 21:30:48,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:48,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:48,049 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 103 flow. Second operand 3 states and 1079 transitions. [2022-12-13 21:30:48,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 38 transitions, 175 flow [2022-12-13 21:30:48,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 38 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:30:48,050 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 100 flow [2022-12-13 21:30:48,050 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2022-12-13 21:30:48,050 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2022-12-13 21:30:48,050 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 100 flow [2022-12-13 21:30:48,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 348.6666666666667) internal successors, (1046), 3 states have internal predecessors, (1046), 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) [2022-12-13 21:30:48,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:48,051 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2022-12-13 21:30:48,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 21:30:48,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:48,253 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:30:48,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:48,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2136546132, now seen corresponding path program 1 times [2022-12-13 21:30:48,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:30:48,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689777901] [2022-12-13 21:30:48,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:48,255 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 [2022-12-13 21:30:48,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:30:48,258 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:30:48,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (11)] Waiting until timeout for monitored process [2022-12-13 21:30:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:48,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 21:30:48,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:48,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:30:48,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:30:48,427 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-12-13 21:30:48,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-12-13 21:30:48,434 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 14 treesize of output 12 [2022-12-13 21:30:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:30:48,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:30:48,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:30:48,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689777901] [2022-12-13 21:30:48,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689777901] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:48,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:48,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:30:48,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55619631] [2022-12-13 21:30:48,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:48,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:30:48,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:30:48,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:30:48,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:30:48,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 817 [2022-12-13 21:30:48,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 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) [2022-12-13 21:30:48,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:48,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 817 [2022-12-13 21:30:48,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:48,995 INFO L130 PetriNetUnfolder]: 956/1393 cut-off events. [2022-12-13 21:30:48,995 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-13 21:30:48,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2834 conditions, 1393 events. 956/1393 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5140 event pairs, 740 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 2821. Up to 1393 conditions per place. [2022-12-13 21:30:48,998 INFO L137 encePairwiseOnDemand]: 814/817 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2022-12-13 21:30:48,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 168 flow [2022-12-13 21:30:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:30:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:30:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1074 transitions. [2022-12-13 21:30:49,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43818849449204406 [2022-12-13 21:30:49,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1074 transitions. [2022-12-13 21:30:49,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1074 transitions. [2022-12-13 21:30:49,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:49,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1074 transitions. [2022-12-13 21:30:49,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 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) [2022-12-13 21:30:49,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:49,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:49,004 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 100 flow. Second operand 3 states and 1074 transitions. [2022-12-13 21:30:49,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 168 flow [2022-12-13 21:30:49,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 36 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:30:49,005 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 97 flow [2022-12-13 21:30:49,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2022-12-13 21:30:49,005 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2022-12-13 21:30:49,005 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 97 flow [2022-12-13 21:30:49,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 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) [2022-12-13 21:30:49,006 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:49,006 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2022-12-13 21:30:49,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (11)] Forceful destruction successful, exit code 0 [2022-12-13 21:30:49,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:49,207 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:30:49,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:49,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1808418480, now seen corresponding path program 1 times [2022-12-13 21:30:49,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:30:49,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390760055] [2022-12-13 21:30:49,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:49,210 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 [2022-12-13 21:30:49,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:30:49,212 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:30:49,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (12)] Waiting until timeout for monitored process [2022-12-13 21:30:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:49,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:30:49,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:49,354 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-12-13 21:30:49,354 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 [2022-12-13 21:30:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:30:49,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:30:49,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:30:49,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390760055] [2022-12-13 21:30:49,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390760055] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:49,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:49,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:30:49,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332229906] [2022-12-13 21:30:49,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:49,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:30:49,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:30:49,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:30:49,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:30:49,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 817 [2022-12-13 21:30:49,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 340.5) internal successors, (1362), 4 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) [2022-12-13 21:30:49,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:49,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 817 [2022-12-13 21:30:49,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:49,833 INFO L130 PetriNetUnfolder]: 537/792 cut-off events. [2022-12-13 21:30:49,833 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-12-13 21:30:49,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1623 conditions, 792 events. 537/792 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2514 event pairs, 387 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 1609. Up to 788 conditions per place. [2022-12-13 21:30:49,837 INFO L137 encePairwiseOnDemand]: 812/817 looper letters, 31 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2022-12-13 21:30:49,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 157 flow [2022-12-13 21:30:49,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:30:49,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:30:49,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1390 transitions. [2022-12-13 21:30:49,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42533659730722156 [2022-12-13 21:30:49,842 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1390 transitions. [2022-12-13 21:30:49,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1390 transitions. [2022-12-13 21:30:49,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:49,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1390 transitions. [2022-12-13 21:30:49,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 347.5) internal successors, (1390), 4 states have internal predecessors, (1390), 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) [2022-12-13 21:30:49,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 817.0) internal successors, (4085), 5 states have internal predecessors, (4085), 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) [2022-12-13 21:30:49,852 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 817.0) internal successors, (4085), 5 states have internal predecessors, (4085), 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) [2022-12-13 21:30:49,852 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 97 flow. Second operand 4 states and 1390 transitions. [2022-12-13 21:30:49,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 157 flow [2022-12-13 21:30:49,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 33 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:30:49,854 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 94 flow [2022-12-13 21:30:49,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2022-12-13 21:30:49,855 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2022-12-13 21:30:49,855 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 94 flow [2022-12-13 21:30:49,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 340.5) internal successors, (1362), 4 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) [2022-12-13 21:30:49,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:49,855 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2022-12-13 21:30:49,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (12)] Forceful destruction successful, exit code 0 [2022-12-13 21:30:50,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:50,056 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:30:50,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:50,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1808418479, now seen corresponding path program 1 times [2022-12-13 21:30:50,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:30:50,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503390960] [2022-12-13 21:30:50,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:50,059 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 [2022-12-13 21:30:50,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:30:50,062 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:30:50,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (13)] Waiting until timeout for monitored process [2022-12-13 21:30:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:50,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:30:50,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:50,216 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 21:30:50,216 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 42 [2022-12-13 21:30:50,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:30:50,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:30:50,269 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:30:50,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503390960] [2022-12-13 21:30:50,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503390960] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:50,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:50,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:30:50,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671536503] [2022-12-13 21:30:50,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:50,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:30:50,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:30:50,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:30:50,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:30:50,576 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 817 [2022-12-13 21:30:50,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 342.2) internal successors, (1711), 5 states have internal predecessors, (1711), 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) [2022-12-13 21:30:50,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:50,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 817 [2022-12-13 21:30:50,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:50,998 INFO L130 PetriNetUnfolder]: 845/1250 cut-off events. [2022-12-13 21:30:50,998 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-12-13 21:30:51,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2551 conditions, 1250 events. 845/1250 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4824 event pairs, 387 based on Foata normal form. 0/716 useless extension candidates. Maximal degree in co-relation 2536. Up to 788 conditions per place. [2022-12-13 21:30:51,002 INFO L137 encePairwiseOnDemand]: 812/817 looper letters, 54 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2022-12-13 21:30:51,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 265 flow [2022-12-13 21:30:51,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:30:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:30:51,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1762 transitions. [2022-12-13 21:30:51,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43133414932680536 [2022-12-13 21:30:51,005 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1762 transitions. [2022-12-13 21:30:51,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1762 transitions. [2022-12-13 21:30:51,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:51,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1762 transitions. [2022-12-13 21:30:51,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 352.4) internal successors, (1762), 5 states have internal predecessors, (1762), 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) [2022-12-13 21:30:51,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 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) [2022-12-13 21:30:51,009 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 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) [2022-12-13 21:30:51,009 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 94 flow. Second operand 5 states and 1762 transitions. [2022-12-13 21:30:51,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 265 flow [2022-12-13 21:30:51,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 58 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:30:51,010 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 107 flow [2022-12-13 21:30:51,011 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2022-12-13 21:30:51,011 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2022-12-13 21:30:51,011 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 107 flow [2022-12-13 21:30:51,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 342.2) internal successors, (1711), 5 states have internal predecessors, (1711), 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) [2022-12-13 21:30:51,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:51,011 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-12-13 21:30:51,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (13)] Ended with exit code 0 [2022-12-13 21:30:51,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:51,212 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:30:51,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:51,213 INFO L85 PathProgramCache]: Analyzing trace with hash -226396479, now seen corresponding path program 1 times [2022-12-13 21:30:51,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:30:51,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169903956] [2022-12-13 21:30:51,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:51,215 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 [2022-12-13 21:30:51,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:30:51,218 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:30:51,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (14)] Waiting until timeout for monitored process [2022-12-13 21:30:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:51,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 21:30:51,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:51,561 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 21:30:51,561 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 42 [2022-12-13 21:30:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:30:51,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:30:51,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:30:51,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:30:51,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169903956] [2022-12-13 21:30:51,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169903956] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:30:51,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:30:51,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-12-13 21:30:51,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292685111] [2022-12-13 21:30:51,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:30:51,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:30:51,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:30:51,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:30:51,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:30:53,426 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 817 [2022-12-13 21:30:53,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 107 flow. Second operand has 10 states, 10 states have (on average 341.4) internal successors, (3414), 10 states have internal predecessors, (3414), 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) [2022-12-13 21:30:53,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:53,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 817 [2022-12-13 21:30:53,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:54,404 INFO L130 PetriNetUnfolder]: 1461/2166 cut-off events. [2022-12-13 21:30:54,404 INFO L131 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2022-12-13 21:30:54,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4755 conditions, 2166 events. 1461/2166 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9683 event pairs, 387 based on Foata normal form. 0/1444 useless extension candidates. Maximal degree in co-relation 4739. Up to 788 conditions per place. [2022-12-13 21:30:54,411 INFO L137 encePairwiseOnDemand]: 812/817 looper letters, 102 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2022-12-13 21:30:54,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 108 transitions, 490 flow [2022-12-13 21:30:54,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:30:54,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:30:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2488 transitions. [2022-12-13 21:30:54,414 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4350410910998426 [2022-12-13 21:30:54,415 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2488 transitions. [2022-12-13 21:30:54,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2488 transitions. [2022-12-13 21:30:54,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:54,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2488 transitions. [2022-12-13 21:30:54,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 355.42857142857144) internal successors, (2488), 7 states have internal predecessors, (2488), 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) [2022-12-13 21:30:54,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:30:54,421 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:30:54,421 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 107 flow. Second operand 7 states and 2488 transitions. [2022-12-13 21:30:54,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 108 transitions, 490 flow [2022-12-13 21:30:54,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 108 transitions, 484 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 21:30:54,423 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 131 flow [2022-12-13 21:30:54,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2022-12-13 21:30:54,423 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2022-12-13 21:30:54,423 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 131 flow [2022-12-13 21:30:54,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 341.4) internal successors, (3414), 10 states have internal predecessors, (3414), 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) [2022-12-13 21:30:54,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:54,424 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-12-13 21:30:54,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (14)] Forceful destruction successful, exit code 0 [2022-12-13 21:30:54,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:54,624 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:30:54,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:54,625 INFO L85 PathProgramCache]: Analyzing trace with hash -226431366, now seen corresponding path program 1 times [2022-12-13 21:30:54,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:30:54,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509154316] [2022-12-13 21:30:54,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:54,625 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 [2022-12-13 21:30:54,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:30:54,626 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:30:54,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (15)] Waiting until timeout for monitored process [2022-12-13 21:30:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:54,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:30:54,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:54,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:30:54,801 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-12-13 21:30:54,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-12-13 21:30:54,814 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 250 treesize of output 242 [2022-12-13 21:30:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:30:54,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:30:54,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:30:54,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509154316] [2022-12-13 21:30:54,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509154316] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:54,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:54,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:30:54,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075912655] [2022-12-13 21:30:54,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:54,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:30:54,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:30:54,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:30:54,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:30:54,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 817 [2022-12-13 21:30:54,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 350.3333333333333) internal successors, (1051), 3 states have internal predecessors, (1051), 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) [2022-12-13 21:30:54,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:54,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 817 [2022-12-13 21:30:54,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:55,372 INFO L130 PetriNetUnfolder]: 1365/2014 cut-off events. [2022-12-13 21:30:55,372 INFO L131 PetriNetUnfolder]: For 1195/1195 co-relation queries the response was YES. [2022-12-13 21:30:55,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4793 conditions, 2014 events. 1365/2014 cut-off events. For 1195/1195 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8048 event pairs, 1053 based on Foata normal form. 0/1426 useless extension candidates. Maximal degree in co-relation 4775. Up to 2014 conditions per place. [2022-12-13 21:30:55,378 INFO L137 encePairwiseOnDemand]: 814/817 looper letters, 33 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2022-12-13 21:30:55,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 34 transitions, 195 flow [2022-12-13 21:30:55,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:30:55,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:30:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1075 transitions. [2022-12-13 21:30:55,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2022-12-13 21:30:55,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1075 transitions. [2022-12-13 21:30:55,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1075 transitions. [2022-12-13 21:30:55,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:55,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1075 transitions. [2022-12-13 21:30:55,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 358.3333333333333) internal successors, (1075), 3 states have internal predecessors, (1075), 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) [2022-12-13 21:30:55,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:55,383 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:55,383 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 131 flow. Second operand 3 states and 1075 transitions. [2022-12-13 21:30:55,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 34 transitions, 195 flow [2022-12-13 21:30:55,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 34 transitions, 186 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 21:30:55,385 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 120 flow [2022-12-13 21:30:55,385 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2022-12-13 21:30:55,385 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2022-12-13 21:30:55,385 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 120 flow [2022-12-13 21:30:55,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 350.3333333333333) internal successors, (1051), 3 states have internal predecessors, (1051), 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) [2022-12-13 21:30:55,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:55,385 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-12-13 21:30:55,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (15)] Ended with exit code 0 [2022-12-13 21:30:55,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:55,586 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:30:55,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:55,587 INFO L85 PathProgramCache]: Analyzing trace with hash -226431367, now seen corresponding path program 1 times [2022-12-13 21:30:55,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:30:55,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011266456] [2022-12-13 21:30:55,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:55,588 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 [2022-12-13 21:30:55,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:30:55,589 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:30:55,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (16)] Waiting until timeout for monitored process [2022-12-13 21:30:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:55,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:30:55,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:55,757 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-12-13 21:30:55,758 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 29 [2022-12-13 21:30:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:30:55,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:30:55,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:30:55,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011266456] [2022-12-13 21:30:55,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011266456] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:55,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:55,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:30:55,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63975403] [2022-12-13 21:30:55,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:55,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:30:55,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:30:55,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:30:55,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:30:55,882 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 817 [2022-12-13 21:30:55,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 346.3333333333333) internal successors, (1039), 3 states have internal predecessors, (1039), 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) [2022-12-13 21:30:55,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:55,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 817 [2022-12-13 21:30:55,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:56,218 INFO L130 PetriNetUnfolder]: 1269/1862 cut-off events. [2022-12-13 21:30:56,218 INFO L131 PetriNetUnfolder]: For 787/787 co-relation queries the response was YES. [2022-12-13 21:30:56,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4303 conditions, 1862 events. 1269/1862 cut-off events. For 787/787 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7267 event pairs, 975 based on Foata normal form. 0/1358 useless extension candidates. Maximal degree in co-relation 4285. Up to 1862 conditions per place. [2022-12-13 21:30:56,225 INFO L137 encePairwiseOnDemand]: 814/817 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2022-12-13 21:30:56,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 32 transitions, 180 flow [2022-12-13 21:30:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:30:56,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:30:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1061 transitions. [2022-12-13 21:30:56,227 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4328845369237046 [2022-12-13 21:30:56,227 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1061 transitions. [2022-12-13 21:30:56,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1061 transitions. [2022-12-13 21:30:56,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:56,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1061 transitions. [2022-12-13 21:30:56,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.6666666666667) internal successors, (1061), 3 states have internal predecessors, (1061), 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) [2022-12-13 21:30:56,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:56,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 817.0) internal successors, (3268), 4 states have internal predecessors, (3268), 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) [2022-12-13 21:30:56,236 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 120 flow. Second operand 3 states and 1061 transitions. [2022-12-13 21:30:56,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 32 transitions, 180 flow [2022-12-13 21:30:56,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 32 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:30:56,237 INFO L231 Difference]: Finished difference. Result has 50 places, 32 transitions, 117 flow [2022-12-13 21:30:56,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=50, PETRI_TRANSITIONS=32} [2022-12-13 21:30:56,237 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2022-12-13 21:30:56,237 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 32 transitions, 117 flow [2022-12-13 21:30:56,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 346.3333333333333) internal successors, (1039), 3 states have internal predecessors, (1039), 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) [2022-12-13 21:30:56,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:56,238 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:30:56,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (16)] Forceful destruction successful, exit code 0 [2022-12-13 21:30:56,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:56,439 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:30:56,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:56,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1570561725, now seen corresponding path program 1 times [2022-12-13 21:30:56,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:30:56,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844449122] [2022-12-13 21:30:56,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:56,442 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 [2022-12-13 21:30:56,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:30:56,444 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:30:56,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (17)] Waiting until timeout for monitored process [2022-12-13 21:30:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:56,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:30:56,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:56,633 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 21:30:56,633 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 42 [2022-12-13 21:30:56,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:30:56,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:30:56,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:30:56,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844449122] [2022-12-13 21:30:56,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844449122] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:56,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:56,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:30:56,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310684369] [2022-12-13 21:30:56,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:56,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:30:56,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:30:56,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:30:56,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:30:56,885 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 817 [2022-12-13 21:30:56,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 32 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 342.6) internal successors, (1713), 5 states have internal predecessors, (1713), 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) [2022-12-13 21:30:56,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:56,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 817 [2022-12-13 21:30:56,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:57,497 INFO L130 PetriNetUnfolder]: 1909/2806 cut-off events. [2022-12-13 21:30:57,497 INFO L131 PetriNetUnfolder]: For 1199/1199 co-relation queries the response was YES. [2022-12-13 21:30:57,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6452 conditions, 2806 events. 1909/2806 cut-off events. For 1199/1199 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12535 event pairs, 975 based on Foata normal form. 0/2042 useless extension candidates. Maximal degree in co-relation 6433. Up to 1858 conditions per place. [2022-12-13 21:30:57,509 INFO L137 encePairwiseOnDemand]: 812/817 looper letters, 50 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2022-12-13 21:30:57,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 297 flow [2022-12-13 21:30:57,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:30:57,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:30:57,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1752 transitions. [2022-12-13 21:30:57,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42888616891064874 [2022-12-13 21:30:57,512 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1752 transitions. [2022-12-13 21:30:57,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1752 transitions. [2022-12-13 21:30:57,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:57,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1752 transitions. [2022-12-13 21:30:57,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 350.4) internal successors, (1752), 5 states have internal predecessors, (1752), 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) [2022-12-13 21:30:57,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 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) [2022-12-13 21:30:57,517 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 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) [2022-12-13 21:30:57,517 INFO L175 Difference]: Start difference. First operand has 50 places, 32 transitions, 117 flow. Second operand 5 states and 1752 transitions. [2022-12-13 21:30:57,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 297 flow [2022-12-13 21:30:57,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 54 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:30:57,519 INFO L231 Difference]: Finished difference. Result has 54 places, 33 transitions, 132 flow [2022-12-13 21:30:57,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=54, PETRI_TRANSITIONS=33} [2022-12-13 21:30:57,519 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2022-12-13 21:30:57,519 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 33 transitions, 132 flow [2022-12-13 21:30:57,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 342.6) internal successors, (1713), 5 states have internal predecessors, (1713), 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) [2022-12-13 21:30:57,520 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:57,520 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-12-13 21:30:57,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (17)] Forceful destruction successful, exit code 0 [2022-12-13 21:30:57,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:30:57,721 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:30:57,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:57,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1476364481, now seen corresponding path program 2 times [2022-12-13 21:30:57,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:30:57,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911667354] [2022-12-13 21:30:57,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:30:57,723 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 [2022-12-13 21:30:57,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:30:57,726 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:30:57,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (18)] Waiting until timeout for monitored process [2022-12-13 21:30:57,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:30:57,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:30:57,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 21:30:57,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:58,042 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 21:30:58,042 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 42 [2022-12-13 21:30:58,152 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:30:58,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:30:58,524 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:30:58,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:30:58,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911667354] [2022-12-13 21:30:58,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911667354] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:30:58,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:30:58,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2022-12-13 21:30:58,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854259264] [2022-12-13 21:30:58,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:30:58,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:30:58,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:30:58,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:30:58,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:31:01,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 817 [2022-12-13 21:31:01,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 33 transitions, 132 flow. Second operand has 12 states, 12 states have (on average 341.5) internal successors, (4098), 12 states have internal predecessors, (4098), 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) [2022-12-13 21:31:01,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:31:01,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 817 [2022-12-13 21:31:01,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:31:02,402 INFO L130 PetriNetUnfolder]: 1701/2536 cut-off events. [2022-12-13 21:31:02,402 INFO L131 PetriNetUnfolder]: For 855/855 co-relation queries the response was YES. [2022-12-13 21:31:02,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6208 conditions, 2536 events. 1701/2536 cut-off events. For 855/855 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12142 event pairs, 63 based on Foata normal form. 124/2194 useless extension candidates. Maximal degree in co-relation 6187. Up to 596 conditions per place. [2022-12-13 21:31:02,409 INFO L137 encePairwiseOnDemand]: 812/817 looper letters, 102 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2022-12-13 21:31:02,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 108 transitions, 545 flow [2022-12-13 21:31:02,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:31:02,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 21:31:02,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2823 transitions. [2022-12-13 21:31:02,413 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4319155446756426 [2022-12-13 21:31:02,413 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2823 transitions. [2022-12-13 21:31:02,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2823 transitions. [2022-12-13 21:31:02,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:31:02,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2823 transitions. [2022-12-13 21:31:02,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 352.875) internal successors, (2823), 8 states have internal predecessors, (2823), 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) [2022-12-13 21:31:02,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 817.0) internal successors, (7353), 9 states have internal predecessors, (7353), 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) [2022-12-13 21:31:02,420 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 817.0) internal successors, (7353), 9 states have internal predecessors, (7353), 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) [2022-12-13 21:31:02,420 INFO L175 Difference]: Start difference. First operand has 54 places, 33 transitions, 132 flow. Second operand 8 states and 2823 transitions. [2022-12-13 21:31:02,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 108 transitions, 545 flow [2022-12-13 21:31:02,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 108 transitions, 522 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 21:31:02,423 INFO L231 Difference]: Finished difference. Result has 53 places, 31 transitions, 115 flow [2022-12-13 21:31:02,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=115, PETRI_PLACES=53, PETRI_TRANSITIONS=31} [2022-12-13 21:31:02,424 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2022-12-13 21:31:02,424 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 31 transitions, 115 flow [2022-12-13 21:31:02,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 341.5) internal successors, (4098), 12 states have internal predecessors, (4098), 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) [2022-12-13 21:31:02,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:31:02,424 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:31:02,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (18)] Ended with exit code 0 [2022-12-13 21:31:02,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:31:02,625 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:31:02,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:02,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1442776139, now seen corresponding path program 1 times [2022-12-13 21:31:02,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:31:02,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441620713] [2022-12-13 21:31:02,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:31:02,628 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 [2022-12-13 21:31:02,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:31:02,631 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:31:02,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (19)] Waiting until timeout for monitored process [2022-12-13 21:31:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:31:02,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 21:31:02,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:02,924 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 21:31:02,924 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 42 [2022-12-13 21:31:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:03,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:31:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:03,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:31:03,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441620713] [2022-12-13 21:31:03,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441620713] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:31:03,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:31:03,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-12-13 21:31:03,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452762261] [2022-12-13 21:31:03,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:31:03,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:31:03,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:31:03,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:31:03,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:31:05,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 817 [2022-12-13 21:31:05,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 31 transitions, 115 flow. Second operand has 10 states, 10 states have (on average 341.8) internal successors, (3418), 10 states have internal predecessors, (3418), 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) [2022-12-13 21:31:05,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:31:05,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 817 [2022-12-13 21:31:05,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:31:06,684 INFO L130 PetriNetUnfolder]: 2845/4248 cut-off events. [2022-12-13 21:31:06,684 INFO L131 PetriNetUnfolder]: For 1376/1376 co-relation queries the response was YES. [2022-12-13 21:31:06,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10066 conditions, 4248 events. 2845/4248 cut-off events. For 1376/1376 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 21342 event pairs, 895 based on Foata normal form. 0/3542 useless extension candidates. Maximal degree in co-relation 10048. Up to 1676 conditions per place. [2022-12-13 21:31:06,695 INFO L137 encePairwiseOnDemand]: 812/817 looper letters, 84 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2022-12-13 21:31:06,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 90 transitions, 471 flow [2022-12-13 21:31:06,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:31:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:31:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2462 transitions. [2022-12-13 21:31:06,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4304948417555517 [2022-12-13 21:31:06,699 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2462 transitions. [2022-12-13 21:31:06,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2462 transitions. [2022-12-13 21:31:06,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:31:06,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2462 transitions. [2022-12-13 21:31:06,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 351.7142857142857) internal successors, (2462), 7 states have internal predecessors, (2462), 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) [2022-12-13 21:31:06,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:31:06,705 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:31:06,705 INFO L175 Difference]: Start difference. First operand has 53 places, 31 transitions, 115 flow. Second operand 7 states and 2462 transitions. [2022-12-13 21:31:06,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 90 transitions, 471 flow [2022-12-13 21:31:06,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 90 transitions, 439 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 21:31:06,707 INFO L231 Difference]: Finished difference. Result has 55 places, 33 transitions, 134 flow [2022-12-13 21:31:06,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=134, PETRI_PLACES=55, PETRI_TRANSITIONS=33} [2022-12-13 21:31:06,707 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2022-12-13 21:31:06,707 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 33 transitions, 134 flow [2022-12-13 21:31:06,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 341.8) internal successors, (3418), 10 states have internal predecessors, (3418), 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) [2022-12-13 21:31:06,707 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:31:06,708 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:31:06,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (19)] Ended with exit code 0 [2022-12-13 21:31:06,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:31:06,909 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:31:06,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:06,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1777824892, now seen corresponding path program 1 times [2022-12-13 21:31:06,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:31:06,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189925476] [2022-12-13 21:31:06,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:31:06,911 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 [2022-12-13 21:31:06,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:31:06,914 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:31:06,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (20)] Waiting until timeout for monitored process [2022-12-13 21:31:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:31:07,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:31:07,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:07,138 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 21:31:07,138 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 42 [2022-12-13 21:31:07,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:07,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:31:07,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:31:07,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189925476] [2022-12-13 21:31:07,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189925476] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:31:07,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:31:07,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:31:07,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720245371] [2022-12-13 21:31:07,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:31:07,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:31:07,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:31:07,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:31:07,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:31:07,398 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 817 [2022-12-13 21:31:07,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 33 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 343.0) internal successors, (1715), 5 states have internal predecessors, (1715), 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) [2022-12-13 21:31:07,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:31:07,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 817 [2022-12-13 21:31:07,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:31:08,379 INFO L130 PetriNetUnfolder]: 4089/6108 cut-off events. [2022-12-13 21:31:08,379 INFO L131 PetriNetUnfolder]: For 4472/4472 co-relation queries the response was YES. [2022-12-13 21:31:08,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15520 conditions, 6108 events. 4089/6108 cut-off events. For 4472/4472 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 31790 event pairs, 2431 based on Foata normal form. 0/5232 useless extension candidates. Maximal degree in co-relation 15500. Up to 4244 conditions per place. [2022-12-13 21:31:08,395 INFO L137 encePairwiseOnDemand]: 812/817 looper letters, 50 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2022-12-13 21:31:08,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 324 flow [2022-12-13 21:31:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:31:08,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:31:08,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1748 transitions. [2022-12-13 21:31:08,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42790697674418604 [2022-12-13 21:31:08,398 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1748 transitions. [2022-12-13 21:31:08,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1748 transitions. [2022-12-13 21:31:08,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:31:08,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1748 transitions. [2022-12-13 21:31:08,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 349.6) internal successors, (1748), 5 states have internal predecessors, (1748), 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) [2022-12-13 21:31:08,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 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) [2022-12-13 21:31:08,402 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 817.0) internal successors, (4902), 6 states have internal predecessors, (4902), 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) [2022-12-13 21:31:08,402 INFO L175 Difference]: Start difference. First operand has 55 places, 33 transitions, 134 flow. Second operand 5 states and 1748 transitions. [2022-12-13 21:31:08,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 324 flow [2022-12-13 21:31:08,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 309 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 21:31:08,405 INFO L231 Difference]: Finished difference. Result has 57 places, 34 transitions, 141 flow [2022-12-13 21:31:08,405 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=57, PETRI_TRANSITIONS=34} [2022-12-13 21:31:08,406 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2022-12-13 21:31:08,406 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 34 transitions, 141 flow [2022-12-13 21:31:08,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 343.0) internal successors, (1715), 5 states have internal predecessors, (1715), 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) [2022-12-13 21:31:08,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:31:08,406 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:31:08,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (20)] Forceful destruction successful, exit code 0 [2022-12-13 21:31:08,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:31:08,607 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:31:08,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:08,609 INFO L85 PathProgramCache]: Analyzing trace with hash -722000395, now seen corresponding path program 1 times [2022-12-13 21:31:08,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:31:08,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561999791] [2022-12-13 21:31:08,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:31:08,611 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 [2022-12-13 21:31:08,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:31:08,613 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:31:08,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (21)] Waiting until timeout for monitored process [2022-12-13 21:31:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:31:08,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 21:31:08,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:08,908 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 21:31:08,909 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 42 [2022-12-13 21:31:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:08,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:31:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:09,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:31:09,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561999791] [2022-12-13 21:31:09,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561999791] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:31:09,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:31:09,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-12-13 21:31:09,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297411838] [2022-12-13 21:31:09,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:31:09,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:31:09,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:31:09,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:31:09,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:31:11,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 817 [2022-12-13 21:31:11,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 34 transitions, 141 flow. Second operand has 10 states, 10 states have (on average 342.2) internal successors, (3422), 10 states have internal predecessors, (3422), 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) [2022-12-13 21:31:11,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:31:11,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 817 [2022-12-13 21:31:11,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:31:13,149 INFO L130 PetriNetUnfolder]: 6577/9828 cut-off events. [2022-12-13 21:31:13,149 INFO L131 PetriNetUnfolder]: For 6879/6879 co-relation queries the response was YES. [2022-12-13 21:31:13,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26052 conditions, 9828 events. 6577/9828 cut-off events. For 6879/6879 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 55811 event pairs, 2431 based on Foata normal form. 0/9536 useless extension candidates. Maximal degree in co-relation 26031. Up to 4244 conditions per place. [2022-12-13 21:31:13,179 INFO L137 encePairwiseOnDemand]: 812/817 looper letters, 90 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2022-12-13 21:31:13,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 96 transitions, 563 flow [2022-12-13 21:31:13,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:31:13,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:31:13,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2456 transitions. [2022-12-13 21:31:13,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4294457072914845 [2022-12-13 21:31:13,182 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2456 transitions. [2022-12-13 21:31:13,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2456 transitions. [2022-12-13 21:31:13,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:31:13,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2456 transitions. [2022-12-13 21:31:13,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 350.85714285714283) internal successors, (2456), 7 states have internal predecessors, (2456), 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) [2022-12-13 21:31:13,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:31:13,190 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:31:13,190 INFO L175 Difference]: Start difference. First operand has 57 places, 34 transitions, 141 flow. Second operand 7 states and 2456 transitions. [2022-12-13 21:31:13,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 96 transitions, 563 flow [2022-12-13 21:31:13,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 96 transitions, 557 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 21:31:13,196 INFO L231 Difference]: Finished difference. Result has 62 places, 36 transitions, 165 flow [2022-12-13 21:31:13,196 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=165, PETRI_PLACES=62, PETRI_TRANSITIONS=36} [2022-12-13 21:31:13,196 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2022-12-13 21:31:13,196 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 36 transitions, 165 flow [2022-12-13 21:31:13,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 342.2) internal successors, (3422), 10 states have internal predecessors, (3422), 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) [2022-12-13 21:31:13,197 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:31:13,197 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:31:13,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (21)] Ended with exit code 0 [2022-12-13 21:31:13,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:31:13,398 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:31:13,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:13,399 INFO L85 PathProgramCache]: Analyzing trace with hash -766473589, now seen corresponding path program 2 times [2022-12-13 21:31:13,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:31:13,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129952491] [2022-12-13 21:31:13,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:31:13,400 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 [2022-12-13 21:31:13,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:31:13,403 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:31:13,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (22)] Waiting until timeout for monitored process [2022-12-13 21:31:13,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:31:13,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:31:13,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 21:31:13,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:13,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:13,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:31:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:13,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:31:13,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129952491] [2022-12-13 21:31:13,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129952491] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:31:13,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:31:13,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-12-13 21:31:13,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401628341] [2022-12-13 21:31:13,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:31:13,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:31:13,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:31:13,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:31:13,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:31:13,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 817 [2022-12-13 21:31:13,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 36 transitions, 165 flow. Second operand has 10 states, 10 states have (on average 351.6) internal successors, (3516), 10 states have internal predecessors, (3516), 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) [2022-12-13 21:31:13,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:31:13,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 817 [2022-12-13 21:31:13,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:31:15,881 INFO L130 PetriNetUnfolder]: 5675/8648 cut-off events. [2022-12-13 21:31:15,881 INFO L131 PetriNetUnfolder]: For 8754/8754 co-relation queries the response was YES. [2022-12-13 21:31:15,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24153 conditions, 8648 events. 5675/8648 cut-off events. For 8754/8754 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 51380 event pairs, 337 based on Foata normal form. 556/9204 useless extension candidates. Maximal degree in co-relation 24130. Up to 1996 conditions per place. [2022-12-13 21:31:15,907 INFO L137 encePairwiseOnDemand]: 814/817 looper letters, 113 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2022-12-13 21:31:15,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 117 transitions, 713 flow [2022-12-13 21:31:15,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:31:15,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:31:15,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2192 transitions. [2022-12-13 21:31:15,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44716442268461853 [2022-12-13 21:31:15,910 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2192 transitions. [2022-12-13 21:31:15,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2192 transitions. [2022-12-13 21:31:15,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:31:15,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2192 transitions. [2022-12-13 21:31:15,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 365.3333333333333) internal successors, (2192), 6 states have internal predecessors, (2192), 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) [2022-12-13 21:31:15,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 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) [2022-12-13 21:31:15,915 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 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) [2022-12-13 21:31:15,915 INFO L175 Difference]: Start difference. First operand has 62 places, 36 transitions, 165 flow. Second operand 6 states and 2192 transitions. [2022-12-13 21:31:15,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 117 transitions, 713 flow [2022-12-13 21:31:15,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 117 transitions, 671 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-12-13 21:31:15,946 INFO L231 Difference]: Finished difference. Result has 59 places, 34 transitions, 141 flow [2022-12-13 21:31:15,946 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=59, PETRI_TRANSITIONS=34} [2022-12-13 21:31:15,946 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2022-12-13 21:31:15,946 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 34 transitions, 141 flow [2022-12-13 21:31:15,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 351.6) internal successors, (3516), 10 states have internal predecessors, (3516), 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) [2022-12-13 21:31:15,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:31:15,947 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:31:15,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (22)] Forceful destruction successful, exit code 0 [2022-12-13 21:31:16,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:31:16,148 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:31:16,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:16,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1942411989, now seen corresponding path program 2 times [2022-12-13 21:31:16,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:31:16,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330092714] [2022-12-13 21:31:16,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:31:16,150 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 [2022-12-13 21:31:16,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:31:16,153 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:31:16,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (23)] Waiting until timeout for monitored process [2022-12-13 21:31:16,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:31:16,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:31:16,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 21:31:16,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:16,477 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 21:31:16,478 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 42 [2022-12-13 21:31:16,600 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:16,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:31:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:16,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:31:16,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330092714] [2022-12-13 21:31:16,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330092714] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:31:16,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:31:16,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2022-12-13 21:31:16,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355518186] [2022-12-13 21:31:16,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:31:16,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:31:16,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:31:16,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:31:16,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:31:19,521 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 817 [2022-12-13 21:31:19,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 34 transitions, 141 flow. Second operand has 12 states, 12 states have (on average 342.1666666666667) internal successors, (4106), 12 states have internal predecessors, (4106), 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) [2022-12-13 21:31:19,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:31:19,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 817 [2022-12-13 21:31:19,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:31:21,630 INFO L130 PetriNetUnfolder]: 4872/7579 cut-off events. [2022-12-13 21:31:21,630 INFO L131 PetriNetUnfolder]: For 4287/4287 co-relation queries the response was YES. [2022-12-13 21:31:21,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19628 conditions, 7579 events. 4872/7579 cut-off events. For 4287/4287 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 44233 event pairs, 576 based on Foata normal form. 532/8111 useless extension candidates. Maximal degree in co-relation 19609. Up to 1638 conditions per place. [2022-12-13 21:31:21,652 INFO L137 encePairwiseOnDemand]: 812/817 looper letters, 95 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2022-12-13 21:31:21,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 101 transitions, 562 flow [2022-12-13 21:31:21,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:31:21,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 21:31:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2801 transitions. [2022-12-13 21:31:21,656 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42854957160342716 [2022-12-13 21:31:21,656 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2801 transitions. [2022-12-13 21:31:21,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2801 transitions. [2022-12-13 21:31:21,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:31:21,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2801 transitions. [2022-12-13 21:31:21,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 350.125) internal successors, (2801), 8 states have internal predecessors, (2801), 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) [2022-12-13 21:31:21,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 817.0) internal successors, (7353), 9 states have internal predecessors, (7353), 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) [2022-12-13 21:31:21,663 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 817.0) internal successors, (7353), 9 states have internal predecessors, (7353), 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) [2022-12-13 21:31:21,663 INFO L175 Difference]: Start difference. First operand has 59 places, 34 transitions, 141 flow. Second operand 8 states and 2801 transitions. [2022-12-13 21:31:21,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 101 transitions, 562 flow [2022-12-13 21:31:21,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 101 transitions, 518 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-13 21:31:21,701 INFO L231 Difference]: Finished difference. Result has 57 places, 32 transitions, 123 flow [2022-12-13 21:31:21,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=123, PETRI_PLACES=57, PETRI_TRANSITIONS=32} [2022-12-13 21:31:21,702 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2022-12-13 21:31:21,702 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 32 transitions, 123 flow [2022-12-13 21:31:21,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 342.1666666666667) internal successors, (4106), 12 states have internal predecessors, (4106), 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) [2022-12-13 21:31:21,702 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:31:21,703 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:31:21,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (23)] Ended with exit code 0 [2022-12-13 21:31:21,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:31:21,904 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:31:21,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:21,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1299107299, now seen corresponding path program 1 times [2022-12-13 21:31:21,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:31:21,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670129421] [2022-12-13 21:31:21,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:31:21,906 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 [2022-12-13 21:31:21,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:31:21,909 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:31:21,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (24)] Waiting until timeout for monitored process [2022-12-13 21:31:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:31:22,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 21:31:22,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:22,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:22,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:31:22,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:31:22,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670129421] [2022-12-13 21:31:22,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670129421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:31:22,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:31:22,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:31:22,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104655405] [2022-12-13 21:31:22,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:31:22,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:31:22,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:31:22,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:31:22,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:31:22,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 817 [2022-12-13 21:31:22,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 32 transitions, 123 flow. Second operand has 8 states, 8 states have (on average 320.625) internal successors, (2565), 8 states have internal predecessors, (2565), 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) [2022-12-13 21:31:22,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:31:22,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 817 [2022-12-13 21:31:22,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:31:24,986 INFO L130 PetriNetUnfolder]: 5014/7836 cut-off events. [2022-12-13 21:31:24,986 INFO L131 PetriNetUnfolder]: For 3127/3127 co-relation queries the response was YES. [2022-12-13 21:31:24,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19494 conditions, 7836 events. 5014/7836 cut-off events. For 3127/3127 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 46089 event pairs, 3710 based on Foata normal form. 7/7843 useless extension candidates. Maximal degree in co-relation 19477. Up to 5788 conditions per place. [2022-12-13 21:31:25,007 INFO L137 encePairwiseOnDemand]: 808/817 looper letters, 86 selfloop transitions, 6 changer transitions 10/102 dead transitions. [2022-12-13 21:31:25,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 102 transitions, 555 flow [2022-12-13 21:31:25,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:31:25,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:31:25,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2311 transitions. [2022-12-13 21:31:25,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40409162440986185 [2022-12-13 21:31:25,010 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2311 transitions. [2022-12-13 21:31:25,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2311 transitions. [2022-12-13 21:31:25,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:31:25,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2311 transitions. [2022-12-13 21:31:25,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 330.14285714285717) internal successors, (2311), 7 states have internal predecessors, (2311), 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) [2022-12-13 21:31:25,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:31:25,015 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:31:25,016 INFO L175 Difference]: Start difference. First operand has 57 places, 32 transitions, 123 flow. Second operand 7 states and 2311 transitions. [2022-12-13 21:31:25,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 102 transitions, 555 flow [2022-12-13 21:31:25,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 102 transitions, 516 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 21:31:25,019 INFO L231 Difference]: Finished difference. Result has 62 places, 36 transitions, 159 flow [2022-12-13 21:31:25,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=62, PETRI_TRANSITIONS=36} [2022-12-13 21:31:25,020 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2022-12-13 21:31:25,020 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 36 transitions, 159 flow [2022-12-13 21:31:25,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 320.625) internal successors, (2565), 8 states have internal predecessors, (2565), 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) [2022-12-13 21:31:25,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:31:25,020 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:31:25,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (24)] Ended with exit code 0 [2022-12-13 21:31:25,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:31:25,221 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:31:25,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:25,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1161461583, now seen corresponding path program 2 times [2022-12-13 21:31:25,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:31:25,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298438968] [2022-12-13 21:31:25,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:31:25,223 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 [2022-12-13 21:31:25,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:31:25,226 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:31:25,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (25)] Waiting until timeout for monitored process [2022-12-13 21:31:25,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 21:31:25,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:31:25,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:31:25,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:25,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:31:25,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:31:25,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298438968] [2022-12-13 21:31:25,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298438968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:31:25,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:31:25,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:31:25,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880394879] [2022-12-13 21:31:25,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:31:25,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:31:25,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:31:25,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:31:25,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:31:25,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 817 [2022-12-13 21:31:25,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 36 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 325.5) internal successors, (1953), 6 states have internal predecessors, (1953), 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) [2022-12-13 21:31:25,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:31:25,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 817 [2022-12-13 21:31:25,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:31:27,762 INFO L130 PetriNetUnfolder]: 5086/7967 cut-off events. [2022-12-13 21:31:27,762 INFO L131 PetriNetUnfolder]: For 5687/5687 co-relation queries the response was YES. [2022-12-13 21:31:27,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22813 conditions, 7967 events. 5086/7967 cut-off events. For 5687/5687 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 47283 event pairs, 3692 based on Foata normal form. 4/7971 useless extension candidates. Maximal degree in co-relation 22792. Up to 5868 conditions per place. [2022-12-13 21:31:27,788 INFO L137 encePairwiseOnDemand]: 810/817 looper letters, 77 selfloop transitions, 8 changer transitions 13/98 dead transitions. [2022-12-13 21:31:27,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 98 transitions, 596 flow [2022-12-13 21:31:27,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:31:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:31:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2004 transitions. [2022-12-13 21:31:27,790 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.408812729498164 [2022-12-13 21:31:27,790 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2004 transitions. [2022-12-13 21:31:27,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2004 transitions. [2022-12-13 21:31:27,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:31:27,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2004 transitions. [2022-12-13 21:31:27,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 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) [2022-12-13 21:31:27,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 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) [2022-12-13 21:31:27,795 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 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) [2022-12-13 21:31:27,795 INFO L175 Difference]: Start difference. First operand has 62 places, 36 transitions, 159 flow. Second operand 6 states and 2004 transitions. [2022-12-13 21:31:27,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 98 transitions, 596 flow [2022-12-13 21:31:27,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 98 transitions, 552 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-12-13 21:31:27,804 INFO L231 Difference]: Finished difference. Result has 67 places, 39 transitions, 198 flow [2022-12-13 21:31:27,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=67, PETRI_TRANSITIONS=39} [2022-12-13 21:31:27,805 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2022-12-13 21:31:27,805 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 39 transitions, 198 flow [2022-12-13 21:31:27,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 325.5) internal successors, (1953), 6 states have internal predecessors, (1953), 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) [2022-12-13 21:31:27,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:31:27,805 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:31:27,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (25)] Ended with exit code 0 [2022-12-13 21:31:28,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:31:28,007 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:31:28,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:28,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1409669503, now seen corresponding path program 3 times [2022-12-13 21:31:28,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:31:28,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524634746] [2022-12-13 21:31:28,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:31:28,010 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 [2022-12-13 21:31:28,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:31:28,013 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:31:28,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (26)] Waiting until timeout for monitored process [2022-12-13 21:31:28,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 21:31:28,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:31:28,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 21:31:28,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:28,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:31:28,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:31:28,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524634746] [2022-12-13 21:31:28,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524634746] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:31:28,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:31:28,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:31:28,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720067236] [2022-12-13 21:31:28,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:31:28,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:31:28,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:31:28,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:31:28,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:31:29,076 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 817 [2022-12-13 21:31:29,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 39 transitions, 198 flow. Second operand has 8 states, 8 states have (on average 320.625) internal successors, (2565), 8 states have internal predecessors, (2565), 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) [2022-12-13 21:31:29,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:31:29,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 817 [2022-12-13 21:31:29,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:31:31,226 INFO L130 PetriNetUnfolder]: 5218/8196 cut-off events. [2022-12-13 21:31:31,226 INFO L131 PetriNetUnfolder]: For 11659/11659 co-relation queries the response was YES. [2022-12-13 21:31:31,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26687 conditions, 8196 events. 5218/8196 cut-off events. For 11659/11659 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 48941 event pairs, 3751 based on Foata normal form. 5/8201 useless extension candidates. Maximal degree in co-relation 26663. Up to 5845 conditions per place. [2022-12-13 21:31:31,265 INFO L137 encePairwiseOnDemand]: 808/817 looper letters, 102 selfloop transitions, 8 changer transitions 8/118 dead transitions. [2022-12-13 21:31:31,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 118 transitions, 823 flow [2022-12-13 21:31:31,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:31:31,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:31:31,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2309 transitions. [2022-12-13 21:31:31,267 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4037419129218395 [2022-12-13 21:31:31,267 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2309 transitions. [2022-12-13 21:31:31,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2309 transitions. [2022-12-13 21:31:31,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:31:31,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2309 transitions. [2022-12-13 21:31:31,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 329.85714285714283) internal successors, (2309), 7 states have internal predecessors, (2309), 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) [2022-12-13 21:31:31,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:31:31,272 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:31:31,273 INFO L175 Difference]: Start difference. First operand has 67 places, 39 transitions, 198 flow. Second operand 7 states and 2309 transitions. [2022-12-13 21:31:31,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 118 transitions, 823 flow [2022-12-13 21:31:31,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 118 transitions, 757 flow, removed 20 selfloop flow, removed 3 redundant places. [2022-12-13 21:31:31,283 INFO L231 Difference]: Finished difference. Result has 73 places, 44 transitions, 253 flow [2022-12-13 21:31:31,283 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=73, PETRI_TRANSITIONS=44} [2022-12-13 21:31:31,283 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 22 predicate places. [2022-12-13 21:31:31,283 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 44 transitions, 253 flow [2022-12-13 21:31:31,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 320.625) internal successors, (2565), 8 states have internal predecessors, (2565), 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) [2022-12-13 21:31:31,284 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:31:31,284 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:31:31,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (26)] Ended with exit code 0 [2022-12-13 21:31:31,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:31:31,485 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:31:31,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:31,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1682021751, now seen corresponding path program 4 times [2022-12-13 21:31:31,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:31:31,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077575128] [2022-12-13 21:31:31,487 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:31:31,488 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 [2022-12-13 21:31:31,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:31:31,490 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:31:31,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (27)] Waiting until timeout for monitored process [2022-12-13 21:31:31,618 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:31:31,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:31:31,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:31:31,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:31,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:31,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:31:31,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:31:31,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077575128] [2022-12-13 21:31:31,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077575128] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:31:31,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:31:31,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:31:31,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285037329] [2022-12-13 21:31:31,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:31:31,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:31:31,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:31:31,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:31:31,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:31:32,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 817 [2022-12-13 21:31:32,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 44 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 325.5) internal successors, (1953), 6 states have internal predecessors, (1953), 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) [2022-12-13 21:31:32,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:31:32,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 817 [2022-12-13 21:31:32,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:31:34,481 INFO L130 PetriNetUnfolder]: 5501/8670 cut-off events. [2022-12-13 21:31:34,482 INFO L131 PetriNetUnfolder]: For 13085/13085 co-relation queries the response was YES. [2022-12-13 21:31:34,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29147 conditions, 8670 events. 5501/8670 cut-off events. For 13085/13085 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 52679 event pairs, 3800 based on Foata normal form. 6/8676 useless extension candidates. Maximal degree in co-relation 29120. Up to 6112 conditions per place. [2022-12-13 21:31:34,514 INFO L137 encePairwiseOnDemand]: 810/817 looper letters, 83 selfloop transitions, 18 changer transitions 14/115 dead transitions. [2022-12-13 21:31:34,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 115 transitions, 833 flow [2022-12-13 21:31:34,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:31:34,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:31:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2007 transitions. [2022-12-13 21:31:34,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4094247246022032 [2022-12-13 21:31:34,517 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2007 transitions. [2022-12-13 21:31:34,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2007 transitions. [2022-12-13 21:31:34,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:31:34,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2007 transitions. [2022-12-13 21:31:34,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 334.5) internal successors, (2007), 6 states have internal predecessors, (2007), 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) [2022-12-13 21:31:34,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 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) [2022-12-13 21:31:34,521 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 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) [2022-12-13 21:31:34,521 INFO L175 Difference]: Start difference. First operand has 73 places, 44 transitions, 253 flow. Second operand 6 states and 2007 transitions. [2022-12-13 21:31:34,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 115 transitions, 833 flow [2022-12-13 21:31:34,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 115 transitions, 790 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-12-13 21:31:34,539 INFO L231 Difference]: Finished difference. Result has 78 places, 54 transitions, 408 flow [2022-12-13 21:31:34,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=78, PETRI_TRANSITIONS=54} [2022-12-13 21:31:34,540 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 27 predicate places. [2022-12-13 21:31:34,540 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 54 transitions, 408 flow [2022-12-13 21:31:34,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 325.5) internal successors, (1953), 6 states have internal predecessors, (1953), 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) [2022-12-13 21:31:34,540 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:31:34,540 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:31:34,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (27)] Ended with exit code 0 [2022-12-13 21:31:34,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:31:34,741 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:31:34,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:34,742 INFO L85 PathProgramCache]: Analyzing trace with hash -218778283, now seen corresponding path program 5 times [2022-12-13 21:31:34,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:31:34,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769460995] [2022-12-13 21:31:34,743 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:31:34,744 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 [2022-12-13 21:31:34,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:31:34,746 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:31:34,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (28)] Waiting until timeout for monitored process [2022-12-13 21:31:34,881 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 21:31:34,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:31:34,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 21:31:34,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:35,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:31:35,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:31:35,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769460995] [2022-12-13 21:31:35,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769460995] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:31:35,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:31:35,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:31:35,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275388741] [2022-12-13 21:31:35,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:31:35,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:31:35,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:31:35,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:31:35,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:31:35,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 817 [2022-12-13 21:31:35,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 54 transitions, 408 flow. Second operand has 8 states, 8 states have (on average 320.625) internal successors, (2565), 8 states have internal predecessors, (2565), 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) [2022-12-13 21:31:35,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:31:35,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 817 [2022-12-13 21:31:35,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:31:38,020 INFO L130 PetriNetUnfolder]: 5837/9233 cut-off events. [2022-12-13 21:31:38,020 INFO L131 PetriNetUnfolder]: For 25450/25450 co-relation queries the response was YES. [2022-12-13 21:31:38,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34928 conditions, 9233 events. 5837/9233 cut-off events. For 25450/25450 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 57068 event pairs, 3849 based on Foata normal form. 5/9238 useless extension candidates. Maximal degree in co-relation 34898. Up to 6155 conditions per place. [2022-12-13 21:31:38,057 INFO L137 encePairwiseOnDemand]: 808/817 looper letters, 123 selfloop transitions, 23 changer transitions 8/154 dead transitions. [2022-12-13 21:31:38,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 154 transitions, 1374 flow [2022-12-13 21:31:38,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:31:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:31:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2314 transitions. [2022-12-13 21:31:38,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40461619164189544 [2022-12-13 21:31:38,060 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2314 transitions. [2022-12-13 21:31:38,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2314 transitions. [2022-12-13 21:31:38,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:31:38,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2314 transitions. [2022-12-13 21:31:38,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 330.57142857142856) internal successors, (2314), 7 states have internal predecessors, (2314), 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) [2022-12-13 21:31:38,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:31:38,065 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:31:38,065 INFO L175 Difference]: Start difference. First operand has 78 places, 54 transitions, 408 flow. Second operand 7 states and 2314 transitions. [2022-12-13 21:31:38,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 154 transitions, 1374 flow [2022-12-13 21:31:38,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 154 transitions, 1332 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-12-13 21:31:38,095 INFO L231 Difference]: Finished difference. Result has 86 places, 68 transitions, 663 flow [2022-12-13 21:31:38,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=663, PETRI_PLACES=86, PETRI_TRANSITIONS=68} [2022-12-13 21:31:38,096 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 35 predicate places. [2022-12-13 21:31:38,096 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 68 transitions, 663 flow [2022-12-13 21:31:38,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 320.625) internal successors, (2565), 8 states have internal predecessors, (2565), 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) [2022-12-13 21:31:38,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:31:38,096 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:31:38,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (28)] Ended with exit code 0 [2022-12-13 21:31:38,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:31:38,297 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:31:38,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:38,298 INFO L85 PathProgramCache]: Analyzing trace with hash 110622789, now seen corresponding path program 6 times [2022-12-13 21:31:38,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:31:38,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240264786] [2022-12-13 21:31:38,300 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 21:31:38,300 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 [2022-12-13 21:31:38,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:31:38,303 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:31:38,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (29)] Waiting until timeout for monitored process [2022-12-13 21:31:38,442 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-12-13 21:31:38,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:31:38,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:31:38,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:38,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:38,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:31:38,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:31:38,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240264786] [2022-12-13 21:31:38,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240264786] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:31:38,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:31:38,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:31:38,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480760634] [2022-12-13 21:31:38,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:31:38,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:31:38,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:31:38,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:31:38,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:31:39,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 817 [2022-12-13 21:31:39,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 68 transitions, 663 flow. Second operand has 6 states, 6 states have (on average 325.5) internal successors, (1953), 6 states have internal predecessors, (1953), 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) [2022-12-13 21:31:39,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:31:39,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 817 [2022-12-13 21:31:39,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:31:41,162 INFO L130 PetriNetUnfolder]: 5836/9296 cut-off events. [2022-12-13 21:31:41,162 INFO L131 PetriNetUnfolder]: For 36064/36064 co-relation queries the response was YES. [2022-12-13 21:31:41,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38328 conditions, 9296 events. 5836/9296 cut-off events. For 36064/36064 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 58068 event pairs, 3856 based on Foata normal form. 9/9305 useless extension candidates. Maximal degree in co-relation 38294. Up to 6386 conditions per place. [2022-12-13 21:31:41,206 INFO L137 encePairwiseOnDemand]: 810/817 looper letters, 89 selfloop transitions, 39 changer transitions 17/145 dead transitions. [2022-12-13 21:31:41,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 145 transitions, 1483 flow [2022-12-13 21:31:41,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:31:41,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:31:41,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2003 transitions. [2022-12-13 21:31:41,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40860873113015095 [2022-12-13 21:31:41,208 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2003 transitions. [2022-12-13 21:31:41,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2003 transitions. [2022-12-13 21:31:41,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:31:41,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2003 transitions. [2022-12-13 21:31:41,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 333.8333333333333) internal successors, (2003), 6 states have internal predecessors, (2003), 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) [2022-12-13 21:31:41,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 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) [2022-12-13 21:31:41,213 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 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) [2022-12-13 21:31:41,213 INFO L175 Difference]: Start difference. First operand has 86 places, 68 transitions, 663 flow. Second operand 6 states and 2003 transitions. [2022-12-13 21:31:41,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 145 transitions, 1483 flow [2022-12-13 21:31:41,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 145 transitions, 1441 flow, removed 14 selfloop flow, removed 2 redundant places. [2022-12-13 21:31:41,255 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 973 flow [2022-12-13 21:31:41,255 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=973, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2022-12-13 21:31:41,256 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 41 predicate places. [2022-12-13 21:31:41,256 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 973 flow [2022-12-13 21:31:41,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 325.5) internal successors, (1953), 6 states have internal predecessors, (1953), 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) [2022-12-13 21:31:41,256 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:31:41,256 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:31:41,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (29)] Ended with exit code 0 [2022-12-13 21:31:41,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:31:41,457 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:31:41,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:41,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1109962709, now seen corresponding path program 7 times [2022-12-13 21:31:41,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:31:41,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15110121] [2022-12-13 21:31:41,459 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 21:31:41,460 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 [2022-12-13 21:31:41,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:31:41,463 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:31:41,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (30)] Waiting until timeout for monitored process [2022-12-13 21:31:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:31:41,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 21:31:41,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:42,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:31:42,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:31:42,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15110121] [2022-12-13 21:31:42,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15110121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:31:42,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:31:42,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:31:42,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567121425] [2022-12-13 21:31:42,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:31:42,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:31:42,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:31:42,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:31:42,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:31:43,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 817 [2022-12-13 21:31:43,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 973 flow. Second operand has 8 states, 8 states have (on average 318.625) internal successors, (2549), 8 states have internal predecessors, (2549), 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) [2022-12-13 21:31:43,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:31:43,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 817 [2022-12-13 21:31:43,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:31:46,939 INFO L130 PetriNetUnfolder]: 6128/9732 cut-off events. [2022-12-13 21:31:46,939 INFO L131 PetriNetUnfolder]: For 54999/54999 co-relation queries the response was YES. [2022-12-13 21:31:46,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44123 conditions, 9732 events. 6128/9732 cut-off events. For 54999/54999 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 61231 event pairs, 3775 based on Foata normal form. 7/9739 useless extension candidates. Maximal degree in co-relation 44086. Up to 6179 conditions per place. [2022-12-13 21:31:46,985 INFO L137 encePairwiseOnDemand]: 807/817 looper letters, 161 selfloop transitions, 27 changer transitions 8/196 dead transitions. [2022-12-13 21:31:46,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 196 transitions, 2389 flow [2022-12-13 21:31:46,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:31:46,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 21:31:46,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2623 transitions. [2022-12-13 21:31:46,987 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40131578947368424 [2022-12-13 21:31:46,987 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2623 transitions. [2022-12-13 21:31:46,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2623 transitions. [2022-12-13 21:31:46,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:31:46,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2623 transitions. [2022-12-13 21:31:46,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 327.875) internal successors, (2623), 8 states have internal predecessors, (2623), 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) [2022-12-13 21:31:46,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 817.0) internal successors, (7353), 9 states have internal predecessors, (7353), 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) [2022-12-13 21:31:46,996 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 817.0) internal successors, (7353), 9 states have internal predecessors, (7353), 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) [2022-12-13 21:31:46,996 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 973 flow. Second operand 8 states and 2623 transitions. [2022-12-13 21:31:46,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 196 transitions, 2389 flow [2022-12-13 21:31:47,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 196 transitions, 2187 flow, removed 41 selfloop flow, removed 3 redundant places. [2022-12-13 21:31:47,096 INFO L231 Difference]: Finished difference. Result has 101 places, 102 transitions, 1227 flow [2022-12-13 21:31:47,096 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1227, PETRI_PLACES=101, PETRI_TRANSITIONS=102} [2022-12-13 21:31:47,096 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 50 predicate places. [2022-12-13 21:31:47,096 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 102 transitions, 1227 flow [2022-12-13 21:31:47,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 318.625) internal successors, (2549), 8 states have internal predecessors, (2549), 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) [2022-12-13 21:31:47,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:31:47,097 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:31:47,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (30)] Ended with exit code 0 [2022-12-13 21:31:47,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:31:47,298 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:31:47,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:47,299 INFO L85 PathProgramCache]: Analyzing trace with hash 743209263, now seen corresponding path program 8 times [2022-12-13 21:31:47,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:31:47,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875589428] [2022-12-13 21:31:47,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:31:47,300 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 [2022-12-13 21:31:47,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:31:47,303 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:31:47,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (31)] Waiting until timeout for monitored process [2022-12-13 21:31:47,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 21:31:47,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:31:47,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:31:47,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:47,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:31:47,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:31:47,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875589428] [2022-12-13 21:31:47,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875589428] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:31:47,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:31:47,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:31:47,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822053578] [2022-12-13 21:31:47,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:31:47,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:31:47,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:31:47,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:31:47,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:31:48,440 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 817 [2022-12-13 21:31:48,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 102 transitions, 1227 flow. Second operand has 6 states, 6 states have (on average 325.5) internal successors, (1953), 6 states have internal predecessors, (1953), 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) [2022-12-13 21:31:48,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:31:48,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 817 [2022-12-13 21:31:48,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:31:50,793 INFO L130 PetriNetUnfolder]: 6122/9703 cut-off events. [2022-12-13 21:31:50,793 INFO L131 PetriNetUnfolder]: For 55184/55184 co-relation queries the response was YES. [2022-12-13 21:31:50,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45476 conditions, 9703 events. 6122/9703 cut-off events. For 55184/55184 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 60802 event pairs, 3935 based on Foata normal form. 10/9713 useless extension candidates. Maximal degree in co-relation 45434. Up to 6577 conditions per place. [2022-12-13 21:31:50,846 INFO L137 encePairwiseOnDemand]: 810/817 looper letters, 106 selfloop transitions, 52 changer transitions 18/176 dead transitions. [2022-12-13 21:31:50,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 176 transitions, 2106 flow [2022-12-13 21:31:50,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:31:50,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:31:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2003 transitions. [2022-12-13 21:31:50,849 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40860873113015095 [2022-12-13 21:31:50,849 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2003 transitions. [2022-12-13 21:31:50,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2003 transitions. [2022-12-13 21:31:50,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:31:50,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2003 transitions. [2022-12-13 21:31:50,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 333.8333333333333) internal successors, (2003), 6 states have internal predecessors, (2003), 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) [2022-12-13 21:31:50,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 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) [2022-12-13 21:31:50,853 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 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) [2022-12-13 21:31:50,854 INFO L175 Difference]: Start difference. First operand has 101 places, 102 transitions, 1227 flow. Second operand 6 states and 2003 transitions. [2022-12-13 21:31:50,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 176 transitions, 2106 flow [2022-12-13 21:31:51,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 176 transitions, 2090 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-12-13 21:31:51,006 INFO L231 Difference]: Finished difference. Result has 107 places, 110 transitions, 1462 flow [2022-12-13 21:31:51,006 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1462, PETRI_PLACES=107, PETRI_TRANSITIONS=110} [2022-12-13 21:31:51,006 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 56 predicate places. [2022-12-13 21:31:51,006 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 110 transitions, 1462 flow [2022-12-13 21:31:51,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 325.5) internal successors, (1953), 6 states have internal predecessors, (1953), 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) [2022-12-13 21:31:51,006 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:31:51,007 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:31:51,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (31)] Forceful destruction successful, exit code 0 [2022-12-13 21:31:51,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:31:51,207 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:31:51,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:51,208 INFO L85 PathProgramCache]: Analyzing trace with hash -816205835, now seen corresponding path program 9 times [2022-12-13 21:31:51,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:31:51,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159223052] [2022-12-13 21:31:51,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:31:51,210 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 [2022-12-13 21:31:51,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:31:51,213 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:31:51,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (32)] Waiting until timeout for monitored process [2022-12-13 21:31:51,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 21:31:51,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:31:51,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 21:31:51,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:51,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:31:51,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:31:51,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159223052] [2022-12-13 21:31:51,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159223052] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:31:51,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:31:51,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:31:51,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391506648] [2022-12-13 21:31:51,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:31:51,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:31:51,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:31:51,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:31:51,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:31:52,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 817 [2022-12-13 21:31:52,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 110 transitions, 1462 flow. Second operand has 8 states, 8 states have (on average 320.625) internal successors, (2565), 8 states have internal predecessors, (2565), 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) [2022-12-13 21:31:52,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:31:52,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 817 [2022-12-13 21:31:52,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:31:54,669 INFO L130 PetriNetUnfolder]: 6101/9689 cut-off events. [2022-12-13 21:31:54,669 INFO L131 PetriNetUnfolder]: For 69004/69004 co-relation queries the response was YES. [2022-12-13 21:31:54,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47897 conditions, 9689 events. 6101/9689 cut-off events. For 69004/69004 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 60560 event pairs, 3962 based on Foata normal form. 5/9694 useless extension candidates. Maximal degree in co-relation 47852. Up to 6742 conditions per place. [2022-12-13 21:31:54,719 INFO L137 encePairwiseOnDemand]: 808/817 looper letters, 135 selfloop transitions, 56 changer transitions 8/199 dead transitions. [2022-12-13 21:31:54,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 199 transitions, 2701 flow [2022-12-13 21:31:54,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:31:54,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:31:54,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2304 transitions. [2022-12-13 21:31:54,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4028676342017835 [2022-12-13 21:31:54,722 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2304 transitions. [2022-12-13 21:31:54,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2304 transitions. [2022-12-13 21:31:54,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:31:54,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2304 transitions. [2022-12-13 21:31:54,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 329.14285714285717) internal successors, (2304), 7 states have internal predecessors, (2304), 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) [2022-12-13 21:31:54,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:31:54,727 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:31:54,727 INFO L175 Difference]: Start difference. First operand has 107 places, 110 transitions, 1462 flow. Second operand 7 states and 2304 transitions. [2022-12-13 21:31:54,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 199 transitions, 2701 flow [2022-12-13 21:31:54,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 199 transitions, 2558 flow, removed 23 selfloop flow, removed 4 redundant places. [2022-12-13 21:31:54,841 INFO L231 Difference]: Finished difference. Result has 113 places, 129 transitions, 1836 flow [2022-12-13 21:31:54,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1836, PETRI_PLACES=113, PETRI_TRANSITIONS=129} [2022-12-13 21:31:54,842 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 62 predicate places. [2022-12-13 21:31:54,842 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 129 transitions, 1836 flow [2022-12-13 21:31:54,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 320.625) internal successors, (2565), 8 states have internal predecessors, (2565), 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) [2022-12-13 21:31:54,842 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:31:54,842 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:31:54,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (32)] Ended with exit code 0 [2022-12-13 21:31:55,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:31:55,043 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:31:55,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:55,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1433804491, now seen corresponding path program 10 times [2022-12-13 21:31:55,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:31:55,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136655250] [2022-12-13 21:31:55,046 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:31:55,046 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 [2022-12-13 21:31:55,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:31:55,049 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:31:55,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (33)] Waiting until timeout for monitored process [2022-12-13 21:31:55,277 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:31:55,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:31:55,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 21:31:55,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:55,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:55,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:31:55,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:31:55,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136655250] [2022-12-13 21:31:55,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136655250] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:31:55,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:31:55,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:31:55,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341740011] [2022-12-13 21:31:55,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:31:55,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:31:55,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:31:55,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:31:55,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:31:55,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 817 [2022-12-13 21:31:55,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 129 transitions, 1836 flow. Second operand has 8 states, 8 states have (on average 319.625) internal successors, (2557), 8 states have internal predecessors, (2557), 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) [2022-12-13 21:31:55,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:31:55,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 817 [2022-12-13 21:31:55,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:31:58,519 INFO L130 PetriNetUnfolder]: 6091/9667 cut-off events. [2022-12-13 21:31:58,519 INFO L131 PetriNetUnfolder]: For 80984/80984 co-relation queries the response was YES. [2022-12-13 21:31:58,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50085 conditions, 9667 events. 6091/9667 cut-off events. For 80984/80984 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 60525 event pairs, 3726 based on Foata normal form. 5/9672 useless extension candidates. Maximal degree in co-relation 50037. Up to 6118 conditions per place. [2022-12-13 21:31:58,575 INFO L137 encePairwiseOnDemand]: 808/817 looper letters, 162 selfloop transitions, 29 changer transitions 8/199 dead transitions. [2022-12-13 21:31:58,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 199 transitions, 2702 flow [2022-12-13 21:31:58,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:31:58,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:31:58,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2303 transitions. [2022-12-13 21:31:58,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40269277845777235 [2022-12-13 21:31:58,578 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2303 transitions. [2022-12-13 21:31:58,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2303 transitions. [2022-12-13 21:31:58,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:31:58,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2303 transitions. [2022-12-13 21:31:58,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 329.0) internal successors, (2303), 7 states have internal predecessors, (2303), 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) [2022-12-13 21:31:58,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:31:58,583 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:31:58,583 INFO L175 Difference]: Start difference. First operand has 113 places, 129 transitions, 1836 flow. Second operand 7 states and 2303 transitions. [2022-12-13 21:31:58,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 199 transitions, 2702 flow [2022-12-13 21:31:58,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 199 transitions, 2583 flow, removed 35 selfloop flow, removed 2 redundant places. [2022-12-13 21:31:58,691 INFO L231 Difference]: Finished difference. Result has 119 places, 131 transitions, 1849 flow [2022-12-13 21:31:58,691 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1849, PETRI_PLACES=119, PETRI_TRANSITIONS=131} [2022-12-13 21:31:58,692 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 68 predicate places. [2022-12-13 21:31:58,692 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 131 transitions, 1849 flow [2022-12-13 21:31:58,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 319.625) internal successors, (2557), 8 states have internal predecessors, (2557), 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) [2022-12-13 21:31:58,692 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:31:58,692 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:31:58,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (33)] Forceful destruction successful, exit code 0 [2022-12-13 21:31:58,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:31:58,893 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:31:58,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:58,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1790213855, now seen corresponding path program 11 times [2022-12-13 21:31:58,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:31:58,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246811511] [2022-12-13 21:31:58,894 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:31:58,895 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 [2022-12-13 21:31:58,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:31:58,896 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:31:58,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (34)] Waiting until timeout for monitored process [2022-12-13 21:31:59,210 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 21:31:59,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:31:59,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 21:31:59,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:31:59,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:31:59,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:31:59,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246811511] [2022-12-13 21:31:59,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246811511] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:31:59,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:31:59,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:31:59,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58772805] [2022-12-13 21:31:59,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:31:59,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:31:59,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:31:59,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:31:59,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:31:59,828 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 817 [2022-12-13 21:31:59,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 131 transitions, 1849 flow. Second operand has 8 states, 8 states have (on average 320.625) internal successors, (2565), 8 states have internal predecessors, (2565), 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) [2022-12-13 21:31:59,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:31:59,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 817 [2022-12-13 21:31:59,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:32:02,348 INFO L130 PetriNetUnfolder]: 6081/9645 cut-off events. [2022-12-13 21:32:02,348 INFO L131 PetriNetUnfolder]: For 79613/79613 co-relation queries the response was YES. [2022-12-13 21:32:02,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50012 conditions, 9645 events. 6081/9645 cut-off events. For 79613/79613 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 60362 event pairs, 3738 based on Foata normal form. 5/9650 useless extension candidates. Maximal degree in co-relation 49962. Up to 6118 conditions per place. [2022-12-13 21:32:02,408 INFO L137 encePairwiseOnDemand]: 808/817 looper letters, 161 selfloop transitions, 47 changer transitions 8/216 dead transitions. [2022-12-13 21:32:02,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 216 transitions, 2958 flow [2022-12-13 21:32:02,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:32:02,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:32:02,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2312 transitions. [2022-12-13 21:32:02,410 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40426648015387306 [2022-12-13 21:32:02,411 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2312 transitions. [2022-12-13 21:32:02,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2312 transitions. [2022-12-13 21:32:02,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:32:02,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2312 transitions. [2022-12-13 21:32:02,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 330.2857142857143) internal successors, (2312), 7 states have internal predecessors, (2312), 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) [2022-12-13 21:32:02,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:32:02,415 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:32:02,415 INFO L175 Difference]: Start difference. First operand has 119 places, 131 transitions, 1849 flow. Second operand 7 states and 2312 transitions. [2022-12-13 21:32:02,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 216 transitions, 2958 flow [2022-12-13 21:32:02,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 216 transitions, 2885 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-12-13 21:32:02,547 INFO L231 Difference]: Finished difference. Result has 124 places, 137 transitions, 2030 flow [2022-12-13 21:32:02,547 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2030, PETRI_PLACES=124, PETRI_TRANSITIONS=137} [2022-12-13 21:32:02,547 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 73 predicate places. [2022-12-13 21:32:02,547 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 137 transitions, 2030 flow [2022-12-13 21:32:02,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 320.625) internal successors, (2565), 8 states have internal predecessors, (2565), 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) [2022-12-13 21:32:02,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:32:02,547 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:02,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (34)] Ended with exit code 0 [2022-12-13 21:32:02,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:32:02,749 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:32:02,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:02,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1003915359, now seen corresponding path program 12 times [2022-12-13 21:32:02,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:02,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061644519] [2022-12-13 21:32:02,751 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 21:32:02,751 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 [2022-12-13 21:32:02,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:02,754 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:32:02,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (35)] Waiting until timeout for monitored process [2022-12-13 21:32:03,017 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-12-13 21:32:03,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:32:03,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 21:32:03,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:32:03,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:32:03,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:32:03,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061644519] [2022-12-13 21:32:03,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061644519] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:32:03,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:32:03,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:32:03,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276909590] [2022-12-13 21:32:03,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:32:03,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:32:03,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:32:03,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:32:03,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:32:05,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 817 [2022-12-13 21:32:05,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 137 transitions, 2030 flow. Second operand has 8 states, 8 states have (on average 318.625) internal successors, (2549), 8 states have internal predecessors, (2549), 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) [2022-12-13 21:32:05,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:32:05,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 817 [2022-12-13 21:32:05,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:32:09,507 INFO L130 PetriNetUnfolder]: 6087/9655 cut-off events. [2022-12-13 21:32:09,507 INFO L131 PetriNetUnfolder]: For 89840/89840 co-relation queries the response was YES. [2022-12-13 21:32:09,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51589 conditions, 9655 events. 6087/9655 cut-off events. For 89840/89840 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 60379 event pairs, 3762 based on Foata normal form. 5/9660 useless extension candidates. Maximal degree in co-relation 51536. Up to 6122 conditions per place. [2022-12-13 21:32:09,562 INFO L137 encePairwiseOnDemand]: 807/817 looper letters, 154 selfloop transitions, 56 changer transitions 9/219 dead transitions. [2022-12-13 21:32:09,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 219 transitions, 3120 flow [2022-12-13 21:32:09,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:32:09,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 21:32:09,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2623 transitions. [2022-12-13 21:32:09,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40131578947368424 [2022-12-13 21:32:09,565 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2623 transitions. [2022-12-13 21:32:09,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2623 transitions. [2022-12-13 21:32:09,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:32:09,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2623 transitions. [2022-12-13 21:32:09,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 327.875) internal successors, (2623), 8 states have internal predecessors, (2623), 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) [2022-12-13 21:32:09,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 817.0) internal successors, (7353), 9 states have internal predecessors, (7353), 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) [2022-12-13 21:32:09,570 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 817.0) internal successors, (7353), 9 states have internal predecessors, (7353), 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) [2022-12-13 21:32:09,570 INFO L175 Difference]: Start difference. First operand has 124 places, 137 transitions, 2030 flow. Second operand 8 states and 2623 transitions. [2022-12-13 21:32:09,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 219 transitions, 3120 flow [2022-12-13 21:32:09,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 219 transitions, 3068 flow, removed 19 selfloop flow, removed 2 redundant places. [2022-12-13 21:32:09,732 INFO L231 Difference]: Finished difference. Result has 133 places, 153 transitions, 2440 flow [2022-12-13 21:32:09,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2440, PETRI_PLACES=133, PETRI_TRANSITIONS=153} [2022-12-13 21:32:09,733 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 82 predicate places. [2022-12-13 21:32:09,733 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 153 transitions, 2440 flow [2022-12-13 21:32:09,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 318.625) internal successors, (2549), 8 states have internal predecessors, (2549), 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) [2022-12-13 21:32:09,733 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:32:09,733 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:09,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (35)] Ended with exit code 0 [2022-12-13 21:32:09,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:32:09,934 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:32:09,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:09,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1715374889, now seen corresponding path program 13 times [2022-12-13 21:32:09,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:09,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436312740] [2022-12-13 21:32:09,937 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 21:32:09,937 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 [2022-12-13 21:32:09,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:09,940 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:32:09,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (36)] Waiting until timeout for monitored process [2022-12-13 21:32:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:32:10,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 21:32:10,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:32:10,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:32:10,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:32:10,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436312740] [2022-12-13 21:32:10,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436312740] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:32:10,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:32:10,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:32:10,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278119273] [2022-12-13 21:32:10,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:32:10,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:32:10,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:32:10,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:32:10,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:32:11,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 817 [2022-12-13 21:32:11,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 153 transitions, 2440 flow. Second operand has 8 states, 8 states have (on average 319.625) internal successors, (2557), 8 states have internal predecessors, (2557), 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) [2022-12-13 21:32:11,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:32:11,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 817 [2022-12-13 21:32:11,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:32:13,807 INFO L130 PetriNetUnfolder]: 6077/9633 cut-off events. [2022-12-13 21:32:13,807 INFO L131 PetriNetUnfolder]: For 93440/93440 co-relation queries the response was YES. [2022-12-13 21:32:13,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52370 conditions, 9633 events. 6077/9633 cut-off events. For 93440/93440 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 60181 event pairs, 3750 based on Foata normal form. 5/9638 useless extension candidates. Maximal degree in co-relation 52313. Up to 6122 conditions per place. [2022-12-13 21:32:13,873 INFO L137 encePairwiseOnDemand]: 808/817 looper letters, 162 selfloop transitions, 50 changer transitions 8/220 dead transitions. [2022-12-13 21:32:13,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 220 transitions, 3309 flow [2022-12-13 21:32:13,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:32:13,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:32:13,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2306 transitions. [2022-12-13 21:32:13,876 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4032173456898059 [2022-12-13 21:32:13,876 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2306 transitions. [2022-12-13 21:32:13,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2306 transitions. [2022-12-13 21:32:13,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:32:13,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2306 transitions. [2022-12-13 21:32:13,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 329.42857142857144) internal successors, (2306), 7 states have internal predecessors, (2306), 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) [2022-12-13 21:32:13,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:32:13,881 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:32:13,881 INFO L175 Difference]: Start difference. First operand has 133 places, 153 transitions, 2440 flow. Second operand 7 states and 2306 transitions. [2022-12-13 21:32:13,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 220 transitions, 3309 flow [2022-12-13 21:32:14,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 220 transitions, 3179 flow, removed 22 selfloop flow, removed 4 redundant places. [2022-12-13 21:32:14,067 INFO L231 Difference]: Finished difference. Result has 136 places, 153 transitions, 2423 flow [2022-12-13 21:32:14,067 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=2307, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2423, PETRI_PLACES=136, PETRI_TRANSITIONS=153} [2022-12-13 21:32:14,068 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 85 predicate places. [2022-12-13 21:32:14,068 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 153 transitions, 2423 flow [2022-12-13 21:32:14,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 319.625) internal successors, (2557), 8 states have internal predecessors, (2557), 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) [2022-12-13 21:32:14,068 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:32:14,068 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:14,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (36)] Ended with exit code 0 [2022-12-13 21:32:14,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:32:14,269 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:32:14,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:14,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2132142035, now seen corresponding path program 14 times [2022-12-13 21:32:14,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:14,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696503610] [2022-12-13 21:32:14,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:32:14,271 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 [2022-12-13 21:32:14,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:14,274 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:32:14,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (37)] Waiting until timeout for monitored process [2022-12-13 21:32:14,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 21:32:14,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:32:14,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 21:32:14,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:32:15,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:32:15,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:32:15,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696503610] [2022-12-13 21:32:15,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696503610] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:32:15,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:32:15,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:32:15,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768100624] [2022-12-13 21:32:15,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:32:15,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:32:15,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:32:15,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:32:15,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:32:16,875 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 817 [2022-12-13 21:32:16,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 153 transitions, 2423 flow. Second operand has 8 states, 8 states have (on average 318.625) internal successors, (2549), 8 states have internal predecessors, (2549), 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) [2022-12-13 21:32:16,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:32:16,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 817 [2022-12-13 21:32:16,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:32:20,361 INFO L130 PetriNetUnfolder]: 6067/9611 cut-off events. [2022-12-13 21:32:20,361 INFO L131 PetriNetUnfolder]: For 92943/92943 co-relation queries the response was YES. [2022-12-13 21:32:20,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51928 conditions, 9611 events. 6067/9611 cut-off events. For 92943/92943 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 60011 event pairs, 3740 based on Foata normal form. 5/9616 useless extension candidates. Maximal degree in co-relation 51870. Up to 6122 conditions per place. [2022-12-13 21:32:20,419 INFO L137 encePairwiseOnDemand]: 807/817 looper letters, 148 selfloop transitions, 57 changer transitions 9/214 dead transitions. [2022-12-13 21:32:20,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 214 transitions, 3281 flow [2022-12-13 21:32:20,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:32:20,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 21:32:20,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2612 transitions. [2022-12-13 21:32:20,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3996328029375765 [2022-12-13 21:32:20,422 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2612 transitions. [2022-12-13 21:32:20,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2612 transitions. [2022-12-13 21:32:20,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:32:20,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2612 transitions. [2022-12-13 21:32:20,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 326.5) internal successors, (2612), 8 states have internal predecessors, (2612), 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) [2022-12-13 21:32:20,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 817.0) internal successors, (7353), 9 states have internal predecessors, (7353), 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) [2022-12-13 21:32:20,428 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 817.0) internal successors, (7353), 9 states have internal predecessors, (7353), 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) [2022-12-13 21:32:20,428 INFO L175 Difference]: Start difference. First operand has 136 places, 153 transitions, 2423 flow. Second operand 8 states and 2612 transitions. [2022-12-13 21:32:20,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 214 transitions, 3281 flow [2022-12-13 21:32:20,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 214 transitions, 3197 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-12-13 21:32:20,596 INFO L231 Difference]: Finished difference. Result has 142 places, 157 transitions, 2561 flow [2022-12-13 21:32:20,596 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=2346, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2561, PETRI_PLACES=142, PETRI_TRANSITIONS=157} [2022-12-13 21:32:20,596 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 91 predicate places. [2022-12-13 21:32:20,596 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 157 transitions, 2561 flow [2022-12-13 21:32:20,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 318.625) internal successors, (2549), 8 states have internal predecessors, (2549), 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) [2022-12-13 21:32:20,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:32:20,597 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:20,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (37)] Forceful destruction successful, exit code 0 [2022-12-13 21:32:20,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:32:20,798 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:32:20,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:20,799 INFO L85 PathProgramCache]: Analyzing trace with hash -480938175, now seen corresponding path program 15 times [2022-12-13 21:32:20,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:20,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139397482] [2022-12-13 21:32:20,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:32:20,801 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 [2022-12-13 21:32:20,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:20,805 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:32:20,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (38)] Waiting until timeout for monitored process [2022-12-13 21:32:20,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 21:32:20,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:32:20,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 21:32:20,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:32:21,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:32:21,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:32:21,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139397482] [2022-12-13 21:32:21,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139397482] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:32:21,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:32:21,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:32:21,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527213487] [2022-12-13 21:32:21,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:32:21,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:32:21,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:32:21,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:32:21,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:32:22,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 817 [2022-12-13 21:32:22,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 157 transitions, 2561 flow. Second operand has 8 states, 8 states have (on average 319.625) internal successors, (2557), 8 states have internal predecessors, (2557), 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) [2022-12-13 21:32:22,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:32:22,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 817 [2022-12-13 21:32:22,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:32:24,778 INFO L130 PetriNetUnfolder]: 6057/9589 cut-off events. [2022-12-13 21:32:24,778 INFO L131 PetriNetUnfolder]: For 94526/94526 co-relation queries the response was YES. [2022-12-13 21:32:24,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51987 conditions, 9589 events. 6057/9589 cut-off events. For 94526/94526 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 59741 event pairs, 3754 based on Foata normal form. 5/9594 useless extension candidates. Maximal degree in co-relation 51927. Up to 6122 conditions per place. [2022-12-13 21:32:24,858 INFO L137 encePairwiseOnDemand]: 808/817 looper letters, 149 selfloop transitions, 56 changer transitions 8/213 dead transitions. [2022-12-13 21:32:24,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 213 transitions, 3315 flow [2022-12-13 21:32:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:32:24,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:32:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2305 transitions. [2022-12-13 21:32:24,861 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4030424899457947 [2022-12-13 21:32:24,861 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2305 transitions. [2022-12-13 21:32:24,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2305 transitions. [2022-12-13 21:32:24,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:32:24,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2305 transitions. [2022-12-13 21:32:24,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 329.2857142857143) internal successors, (2305), 7 states have internal predecessors, (2305), 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) [2022-12-13 21:32:24,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:32:24,868 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:32:24,868 INFO L175 Difference]: Start difference. First operand has 142 places, 157 transitions, 2561 flow. Second operand 7 states and 2305 transitions. [2022-12-13 21:32:24,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 213 transitions, 3315 flow [2022-12-13 21:32:25,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 213 transitions, 3206 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-12-13 21:32:25,045 INFO L231 Difference]: Finished difference. Result has 145 places, 156 transitions, 2576 flow [2022-12-13 21:32:25,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=2439, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2576, PETRI_PLACES=145, PETRI_TRANSITIONS=156} [2022-12-13 21:32:25,046 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 94 predicate places. [2022-12-13 21:32:25,046 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 156 transitions, 2576 flow [2022-12-13 21:32:25,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 319.625) internal successors, (2557), 8 states have internal predecessors, (2557), 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) [2022-12-13 21:32:25,046 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:32:25,046 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:25,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (38)] Ended with exit code 0 [2022-12-13 21:32:25,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:32:25,247 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:32:25,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:25,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1500318169, now seen corresponding path program 16 times [2022-12-13 21:32:25,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:25,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589092439] [2022-12-13 21:32:25,250 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:32:25,250 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 [2022-12-13 21:32:25,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:25,253 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:32:25,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (39)] Waiting until timeout for monitored process [2022-12-13 21:32:25,391 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:32:25,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:32:25,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:32:25,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:32:25,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:32:25,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:32:25,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589092439] [2022-12-13 21:32:25,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589092439] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:32:25,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:32:25,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:32:25,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712160949] [2022-12-13 21:32:25,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:32:25,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:32:25,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:32:25,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:32:25,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:32:26,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 817 [2022-12-13 21:32:26,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 156 transitions, 2576 flow. Second operand has 6 states, 6 states have (on average 325.5) internal successors, (1953), 6 states have internal predecessors, (1953), 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) [2022-12-13 21:32:26,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:32:26,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 817 [2022-12-13 21:32:26,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:32:28,558 INFO L130 PetriNetUnfolder]: 6133/9730 cut-off events. [2022-12-13 21:32:28,558 INFO L131 PetriNetUnfolder]: For 95803/95803 co-relation queries the response was YES. [2022-12-13 21:32:28,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52889 conditions, 9730 events. 6133/9730 cut-off events. For 95803/95803 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 60880 event pairs, 3976 based on Foata normal form. 8/9738 useless extension candidates. Maximal degree in co-relation 52828. Up to 6742 conditions per place. [2022-12-13 21:32:28,620 INFO L137 encePairwiseOnDemand]: 810/817 looper letters, 123 selfloop transitions, 75 changer transitions 18/216 dead transitions. [2022-12-13 21:32:28,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 216 transitions, 3465 flow [2022-12-13 21:32:28,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:32:28,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:32:28,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2003 transitions. [2022-12-13 21:32:28,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40860873113015095 [2022-12-13 21:32:28,622 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2003 transitions. [2022-12-13 21:32:28,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2003 transitions. [2022-12-13 21:32:28,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:32:28,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2003 transitions. [2022-12-13 21:32:28,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 333.8333333333333) internal successors, (2003), 6 states have internal predecessors, (2003), 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) [2022-12-13 21:32:28,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 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) [2022-12-13 21:32:28,626 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 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) [2022-12-13 21:32:28,626 INFO L175 Difference]: Start difference. First operand has 145 places, 156 transitions, 2576 flow. Second operand 6 states and 2003 transitions. [2022-12-13 21:32:28,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 216 transitions, 3465 flow [2022-12-13 21:32:28,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 216 transitions, 3350 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-13 21:32:28,812 INFO L231 Difference]: Finished difference. Result has 147 places, 160 transitions, 2751 flow [2022-12-13 21:32:28,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=2481, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2751, PETRI_PLACES=147, PETRI_TRANSITIONS=160} [2022-12-13 21:32:28,813 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 96 predicate places. [2022-12-13 21:32:28,813 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 160 transitions, 2751 flow [2022-12-13 21:32:28,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 325.5) internal successors, (1953), 6 states have internal predecessors, (1953), 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) [2022-12-13 21:32:28,813 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:32:28,813 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:28,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (39)] Ended with exit code 0 [2022-12-13 21:32:29,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:32:29,014 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:32:29,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:29,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1036181757, now seen corresponding path program 17 times [2022-12-13 21:32:29,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:29,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484481246] [2022-12-13 21:32:29,018 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:32:29,018 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 [2022-12-13 21:32:29,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:29,021 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:32:29,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (40)] Waiting until timeout for monitored process [2022-12-13 21:32:29,294 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 21:32:29,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:32:29,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:32:29,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:32:29,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:32:29,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:32:29,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484481246] [2022-12-13 21:32:29,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484481246] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:32:29,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:32:29,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:32:29,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191548976] [2022-12-13 21:32:29,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:32:29,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:32:29,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:32:29,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:32:29,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:32:29,687 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 817 [2022-12-13 21:32:29,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 160 transitions, 2751 flow. Second operand has 6 states, 6 states have (on average 325.5) internal successors, (1953), 6 states have internal predecessors, (1953), 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) [2022-12-13 21:32:29,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:32:29,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 817 [2022-12-13 21:32:29,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:32:32,385 INFO L130 PetriNetUnfolder]: 6080/9601 cut-off events. [2022-12-13 21:32:32,386 INFO L131 PetriNetUnfolder]: For 105827/105827 co-relation queries the response was YES. [2022-12-13 21:32:32,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53950 conditions, 9601 events. 6080/9601 cut-off events. For 105827/105827 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 59374 event pairs, 3912 based on Foata normal form. 6/9607 useless extension candidates. Maximal degree in co-relation 53888. Up to 6742 conditions per place. [2022-12-13 21:32:32,448 INFO L137 encePairwiseOnDemand]: 810/817 looper letters, 132 selfloop transitions, 74 changer transitions 18/224 dead transitions. [2022-12-13 21:32:32,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 224 transitions, 3724 flow [2022-12-13 21:32:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:32:32,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:32:32,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2000 transitions. [2022-12-13 21:32:32,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4079967360261118 [2022-12-13 21:32:32,451 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2000 transitions. [2022-12-13 21:32:32,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2000 transitions. [2022-12-13 21:32:32,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:32:32,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2000 transitions. [2022-12-13 21:32:32,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 333.3333333333333) internal successors, (2000), 6 states have internal predecessors, (2000), 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) [2022-12-13 21:32:32,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 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) [2022-12-13 21:32:32,455 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 817.0) internal successors, (5719), 7 states have internal predecessors, (5719), 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) [2022-12-13 21:32:32,455 INFO L175 Difference]: Start difference. First operand has 147 places, 160 transitions, 2751 flow. Second operand 6 states and 2000 transitions. [2022-12-13 21:32:32,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 224 transitions, 3724 flow [2022-12-13 21:32:32,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 224 transitions, 3574 flow, removed 17 selfloop flow, removed 4 redundant places. [2022-12-13 21:32:32,694 INFO L231 Difference]: Finished difference. Result has 150 places, 166 transitions, 3004 flow [2022-12-13 21:32:32,694 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=2612, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3004, PETRI_PLACES=150, PETRI_TRANSITIONS=166} [2022-12-13 21:32:32,694 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 99 predicate places. [2022-12-13 21:32:32,695 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 166 transitions, 3004 flow [2022-12-13 21:32:32,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 325.5) internal successors, (1953), 6 states have internal predecessors, (1953), 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) [2022-12-13 21:32:32,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:32:32,695 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:32,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (40)] Ended with exit code 0 [2022-12-13 21:32:32,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:32:32,896 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:32:32,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:32,897 INFO L85 PathProgramCache]: Analyzing trace with hash 880758340, now seen corresponding path program 1 times [2022-12-13 21:32:32,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:32,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382184824] [2022-12-13 21:32:32,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:32,898 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 [2022-12-13 21:32:32,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:32,901 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:32:32,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (41)] Waiting until timeout for monitored process [2022-12-13 21:32:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:32:33,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:32:33,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:33,241 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:32:33,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:32:33,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:32:33,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382184824] [2022-12-13 21:32:33,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382184824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:32:33,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:32:33,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:32:33,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437261843] [2022-12-13 21:32:33,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:32:33,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:32:33,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:32:33,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:32:33,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:32:33,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 817 [2022-12-13 21:32:33,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 166 transitions, 3004 flow. Second operand has 7 states, 7 states have (on average 328.14285714285717) internal successors, (2297), 7 states have internal predecessors, (2297), 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) [2022-12-13 21:32:33,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:32:33,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 817 [2022-12-13 21:32:33,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:32:36,540 INFO L130 PetriNetUnfolder]: 6957/10962 cut-off events. [2022-12-13 21:32:36,540 INFO L131 PetriNetUnfolder]: For 125619/125619 co-relation queries the response was YES. [2022-12-13 21:32:36,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64192 conditions, 10962 events. 6957/10962 cut-off events. For 125619/125619 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 69901 event pairs, 756 based on Foata normal form. 24/10986 useless extension candidates. Maximal degree in co-relation 64128. Up to 5696 conditions per place. [2022-12-13 21:32:36,615 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 181 selfloop transitions, 63 changer transitions 1/245 dead transitions. [2022-12-13 21:32:36,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 245 transitions, 4077 flow [2022-12-13 21:32:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:32:36,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:32:36,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2357 transitions. [2022-12-13 21:32:36,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41213498863437664 [2022-12-13 21:32:36,618 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2357 transitions. [2022-12-13 21:32:36,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2357 transitions. [2022-12-13 21:32:36,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:32:36,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2357 transitions. [2022-12-13 21:32:36,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 336.7142857142857) internal successors, (2357), 7 states have internal predecessors, (2357), 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) [2022-12-13 21:32:36,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:32:36,623 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:32:36,623 INFO L175 Difference]: Start difference. First operand has 150 places, 166 transitions, 3004 flow. Second operand 7 states and 2357 transitions. [2022-12-13 21:32:36,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 245 transitions, 4077 flow [2022-12-13 21:32:37,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 245 transitions, 3948 flow, removed 39 selfloop flow, removed 3 redundant places. [2022-12-13 21:32:37,283 INFO L231 Difference]: Finished difference. Result has 155 places, 179 transitions, 3301 flow [2022-12-13 21:32:37,283 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=2917, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3301, PETRI_PLACES=155, PETRI_TRANSITIONS=179} [2022-12-13 21:32:37,283 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 104 predicate places. [2022-12-13 21:32:37,283 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 179 transitions, 3301 flow [2022-12-13 21:32:37,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 328.14285714285717) internal successors, (2297), 7 states have internal predecessors, (2297), 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) [2022-12-13 21:32:37,284 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:32:37,284 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:37,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (41)] Forceful destruction successful, exit code 0 [2022-12-13 21:32:37,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:32:37,485 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:32:37,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:37,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1945047276, now seen corresponding path program 2 times [2022-12-13 21:32:37,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:37,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623478029] [2022-12-13 21:32:37,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:32:37,486 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 [2022-12-13 21:32:37,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:37,487 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:32:37,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (42)] Waiting until timeout for monitored process [2022-12-13 21:32:37,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:32:37,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:32:37,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:32:37,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:38,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:32:38,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:32:38,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:32:38,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623478029] [2022-12-13 21:32:38,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623478029] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:32:38,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:32:38,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:32:38,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156677633] [2022-12-13 21:32:38,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:32:38,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:32:38,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:32:38,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:32:38,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:32:38,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 817 [2022-12-13 21:32:38,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 179 transitions, 3301 flow. Second operand has 7 states, 7 states have (on average 330.14285714285717) internal successors, (2311), 7 states have internal predecessors, (2311), 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) [2022-12-13 21:32:38,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:32:38,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 817 [2022-12-13 21:32:38,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:32:41,778 INFO L130 PetriNetUnfolder]: 7000/11079 cut-off events. [2022-12-13 21:32:41,778 INFO L131 PetriNetUnfolder]: For 117629/117629 co-relation queries the response was YES. [2022-12-13 21:32:41,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59985 conditions, 11079 events. 7000/11079 cut-off events. For 117629/117629 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 70677 event pairs, 3948 based on Foata normal form. 6/11085 useless extension candidates. Maximal degree in co-relation 59919. Up to 6876 conditions per place. [2022-12-13 21:32:41,871 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 189 selfloop transitions, 85 changer transitions 8/282 dead transitions. [2022-12-13 21:32:41,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 282 transitions, 5083 flow [2022-12-13 21:32:41,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:32:41,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:32:41,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2372 transitions. [2022-12-13 21:32:41,874 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4147578247945445 [2022-12-13 21:32:41,874 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2372 transitions. [2022-12-13 21:32:41,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2372 transitions. [2022-12-13 21:32:41,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:32:41,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2372 transitions. [2022-12-13 21:32:41,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 338.85714285714283) internal successors, (2372), 7 states have internal predecessors, (2372), 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) [2022-12-13 21:32:41,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:32:41,879 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:32:41,879 INFO L175 Difference]: Start difference. First operand has 155 places, 179 transitions, 3301 flow. Second operand 7 states and 2372 transitions. [2022-12-13 21:32:41,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 282 transitions, 5083 flow [2022-12-13 21:32:42,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 282 transitions, 4985 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-12-13 21:32:42,280 INFO L231 Difference]: Finished difference. Result has 165 places, 204 transitions, 3915 flow [2022-12-13 21:32:42,280 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=3222, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3915, PETRI_PLACES=165, PETRI_TRANSITIONS=204} [2022-12-13 21:32:42,280 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 114 predicate places. [2022-12-13 21:32:42,281 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 204 transitions, 3915 flow [2022-12-13 21:32:42,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 330.14285714285717) internal successors, (2311), 7 states have internal predecessors, (2311), 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) [2022-12-13 21:32:42,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:32:42,281 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:42,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (42)] Ended with exit code 0 [2022-12-13 21:32:42,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:32:42,482 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:32:42,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:42,483 INFO L85 PathProgramCache]: Analyzing trace with hash 624452123, now seen corresponding path program 1 times [2022-12-13 21:32:42,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:42,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40543910] [2022-12-13 21:32:42,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:42,485 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 [2022-12-13 21:32:42,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:42,486 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:32:42,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (43)] Waiting until timeout for monitored process [2022-12-13 21:32:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:32:42,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:32:42,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:32:42,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:32:43,015 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:32:43,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:32:43,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40543910] [2022-12-13 21:32:43,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40543910] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:32:43,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:32:43,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-12-13 21:32:43,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600014604] [2022-12-13 21:32:43,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:32:43,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:32:43,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:32:43,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:32:43,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:32:44,016 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 817 [2022-12-13 21:32:44,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 204 transitions, 3915 flow. Second operand has 10 states, 10 states have (on average 326.9) internal successors, (3269), 10 states have internal predecessors, (3269), 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) [2022-12-13 21:32:44,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:32:44,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 817 [2022-12-13 21:32:44,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:32:47,708 INFO L130 PetriNetUnfolder]: 7993/12684 cut-off events. [2022-12-13 21:32:47,708 INFO L131 PetriNetUnfolder]: For 134860/134860 co-relation queries the response was YES. [2022-12-13 21:32:47,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71449 conditions, 12684 events. 7993/12684 cut-off events. For 134860/134860 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 83681 event pairs, 1964 based on Foata normal form. 30/12714 useless extension candidates. Maximal degree in co-relation 71377. Up to 6272 conditions per place. [2022-12-13 21:32:47,822 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 220 selfloop transitions, 81 changer transitions 4/305 dead transitions. [2022-12-13 21:32:47,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 305 transitions, 5618 flow [2022-12-13 21:32:47,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:32:47,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:32:47,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2353 transitions. [2022-12-13 21:32:47,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4114355656583319 [2022-12-13 21:32:47,826 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2353 transitions. [2022-12-13 21:32:47,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2353 transitions. [2022-12-13 21:32:47,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:32:47,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2353 transitions. [2022-12-13 21:32:47,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 336.14285714285717) internal successors, (2353), 7 states have internal predecessors, (2353), 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) [2022-12-13 21:32:47,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:32:47,831 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:32:47,831 INFO L175 Difference]: Start difference. First operand has 165 places, 204 transitions, 3915 flow. Second operand 7 states and 2353 transitions. [2022-12-13 21:32:47,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 305 transitions, 5618 flow [2022-12-13 21:32:48,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 305 transitions, 5459 flow, removed 45 selfloop flow, removed 2 redundant places. [2022-12-13 21:32:48,490 INFO L231 Difference]: Finished difference. Result has 172 places, 216 transitions, 4247 flow [2022-12-13 21:32:48,491 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=3766, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4247, PETRI_PLACES=172, PETRI_TRANSITIONS=216} [2022-12-13 21:32:48,491 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 121 predicate places. [2022-12-13 21:32:48,491 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 216 transitions, 4247 flow [2022-12-13 21:32:48,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 326.9) internal successors, (3269), 10 states have internal predecessors, (3269), 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) [2022-12-13 21:32:48,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:32:48,491 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:48,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (43)] Ended with exit code 0 [2022-12-13 21:32:48,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:32:48,692 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:32:48,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:48,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1122009849, now seen corresponding path program 2 times [2022-12-13 21:32:48,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:48,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555106678] [2022-12-13 21:32:48,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:32:48,696 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 [2022-12-13 21:32:48,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:48,698 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:32:48,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (44)] Waiting until timeout for monitored process [2022-12-13 21:32:48,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:32:48,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:32:48,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:32:48,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:49,132 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:32:49,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:32:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:32:49,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:32:49,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555106678] [2022-12-13 21:32:49,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555106678] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:32:49,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:32:49,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2022-12-13 21:32:49,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806558656] [2022-12-13 21:32:49,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:32:49,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:32:49,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:32:49,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:32:49,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:32:50,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 817 [2022-12-13 21:32:50,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 216 transitions, 4247 flow. Second operand has 7 states, 7 states have (on average 332.14285714285717) internal successors, (2325), 7 states have internal predecessors, (2325), 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) [2022-12-13 21:32:50,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:32:50,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 817 [2022-12-13 21:32:50,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:32:54,171 INFO L130 PetriNetUnfolder]: 8603/13798 cut-off events. [2022-12-13 21:32:54,171 INFO L131 PetriNetUnfolder]: For 174045/174045 co-relation queries the response was YES. [2022-12-13 21:32:54,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77658 conditions, 13798 events. 8603/13798 cut-off events. For 174045/174045 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 93863 event pairs, 4080 based on Foata normal form. 30/13828 useless extension candidates. Maximal degree in co-relation 77583. Up to 7098 conditions per place. [2022-12-13 21:32:54,301 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 241 selfloop transitions, 62 changer transitions 0/303 dead transitions. [2022-12-13 21:32:54,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 303 transitions, 5605 flow [2022-12-13 21:32:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:32:54,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:32:54,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2394 transitions. [2022-12-13 21:32:54,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2022-12-13 21:32:54,305 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2394 transitions. [2022-12-13 21:32:54,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2394 transitions. [2022-12-13 21:32:54,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:32:54,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2394 transitions. [2022-12-13 21:32:54,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 342.0) internal successors, (2394), 7 states have internal predecessors, (2394), 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) [2022-12-13 21:32:54,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:32:54,310 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:32:54,310 INFO L175 Difference]: Start difference. First operand has 172 places, 216 transitions, 4247 flow. Second operand 7 states and 2394 transitions. [2022-12-13 21:32:54,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 303 transitions, 5605 flow [2022-12-13 21:32:55,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 303 transitions, 5482 flow, removed 19 selfloop flow, removed 2 redundant places. [2022-12-13 21:32:55,055 INFO L231 Difference]: Finished difference. Result has 178 places, 218 transitions, 4327 flow [2022-12-13 21:32:55,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=4124, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4327, PETRI_PLACES=178, PETRI_TRANSITIONS=218} [2022-12-13 21:32:55,055 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 127 predicate places. [2022-12-13 21:32:55,055 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 218 transitions, 4327 flow [2022-12-13 21:32:55,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 332.14285714285717) internal successors, (2325), 7 states have internal predecessors, (2325), 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) [2022-12-13 21:32:55,056 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:32:55,056 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:55,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (44)] Ended with exit code 0 [2022-12-13 21:32:55,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:32:55,257 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:32:55,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:55,258 INFO L85 PathProgramCache]: Analyzing trace with hash 858751549, now seen corresponding path program 3 times [2022-12-13 21:32:55,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:55,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053773874] [2022-12-13 21:32:55,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:32:55,260 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 [2022-12-13 21:32:55,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:55,263 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:32:55,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (45)] Waiting until timeout for monitored process [2022-12-13 21:32:55,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 21:32:55,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:32:55,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:32:55,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:32:55,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:32:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:32:56,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:32:56,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053773874] [2022-12-13 21:32:56,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053773874] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:32:56,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:32:56,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2022-12-13 21:32:56,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475309160] [2022-12-13 21:32:56,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:32:56,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:32:56,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:32:56,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:32:56,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:32:57,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:32:57,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 218 transitions, 4327 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:32:57,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:32:57,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:32:57,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:33:02,198 INFO L130 PetriNetUnfolder]: 10181/16504 cut-off events. [2022-12-13 21:33:02,198 INFO L131 PetriNetUnfolder]: For 210760/210760 co-relation queries the response was YES. [2022-12-13 21:33:02,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93208 conditions, 16504 events. 10181/16504 cut-off events. For 210760/210760 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 117896 event pairs, 4842 based on Foata normal form. 30/16534 useless extension candidates. Maximal degree in co-relation 93131. Up to 7242 conditions per place. [2022-12-13 21:33:02,326 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 262 selfloop transitions, 78 changer transitions 0/340 dead transitions. [2022-12-13 21:33:02,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 340 transitions, 6496 flow [2022-12-13 21:33:02,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:33:02,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:33:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2394 transitions. [2022-12-13 21:33:02,329 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2022-12-13 21:33:02,330 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2394 transitions. [2022-12-13 21:33:02,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2394 transitions. [2022-12-13 21:33:02,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:33:02,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2394 transitions. [2022-12-13 21:33:02,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 342.0) internal successors, (2394), 7 states have internal predecessors, (2394), 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) [2022-12-13 21:33:02,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:33:02,335 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:33:02,335 INFO L175 Difference]: Start difference. First operand has 178 places, 218 transitions, 4327 flow. Second operand 7 states and 2394 transitions. [2022-12-13 21:33:02,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 340 transitions, 6496 flow [2022-12-13 21:33:03,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 340 transitions, 6399 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-12-13 21:33:03,336 INFO L231 Difference]: Finished difference. Result has 184 places, 228 transitions, 4673 flow [2022-12-13 21:33:03,337 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=4238, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4673, PETRI_PLACES=184, PETRI_TRANSITIONS=228} [2022-12-13 21:33:03,337 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 133 predicate places. [2022-12-13 21:33:03,337 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 228 transitions, 4673 flow [2022-12-13 21:33:03,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:33:03,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:33:03,337 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:33:03,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (45)] Ended with exit code 0 [2022-12-13 21:33:03,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:33:03,539 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:33:03,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:33:03,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1182158924, now seen corresponding path program 3 times [2022-12-13 21:33:03,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:33:03,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362334781] [2022-12-13 21:33:03,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:33:03,542 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 [2022-12-13 21:33:03,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:33:03,545 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:33:03,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (46)] Waiting until timeout for monitored process [2022-12-13 21:33:03,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 21:33:03,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:33:03,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:33:03,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:33:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:33:03,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:33:03,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:33:03,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362334781] [2022-12-13 21:33:03,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362334781] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:33:03,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:33:03,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:33:03,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033704210] [2022-12-13 21:33:03,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:33:03,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:33:03,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:33:03,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:33:03,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:33:04,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 817 [2022-12-13 21:33:04,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 228 transitions, 4673 flow. Second operand has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:33:04,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:33:04,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 817 [2022-12-13 21:33:04,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:33:09,070 INFO L130 PetriNetUnfolder]: 10243/16632 cut-off events. [2022-12-13 21:33:09,071 INFO L131 PetriNetUnfolder]: For 229766/229766 co-relation queries the response was YES. [2022-12-13 21:33:09,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94397 conditions, 16632 events. 10243/16632 cut-off events. For 229766/229766 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 118808 event pairs, 5068 based on Foata normal form. 24/16656 useless extension candidates. Maximal degree in co-relation 94317. Up to 7263 conditions per place. [2022-12-13 21:33:09,220 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 228 selfloop transitions, 72 changer transitions 0/300 dead transitions. [2022-12-13 21:33:09,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 300 transitions, 5817 flow [2022-12-13 21:33:09,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:33:09,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:33:09,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2356 transitions. [2022-12-13 21:33:09,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4119601328903654 [2022-12-13 21:33:09,223 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2356 transitions. [2022-12-13 21:33:09,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2356 transitions. [2022-12-13 21:33:09,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:33:09,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2356 transitions. [2022-12-13 21:33:09,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 336.57142857142856) internal successors, (2356), 7 states have internal predecessors, (2356), 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) [2022-12-13 21:33:09,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:33:09,228 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:33:09,228 INFO L175 Difference]: Start difference. First operand has 184 places, 228 transitions, 4673 flow. Second operand 7 states and 2356 transitions. [2022-12-13 21:33:09,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 300 transitions, 5817 flow [2022-12-13 21:33:10,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 300 transitions, 5613 flow, removed 29 selfloop flow, removed 3 redundant places. [2022-12-13 21:33:10,238 INFO L231 Difference]: Finished difference. Result has 190 places, 232 transitions, 4763 flow [2022-12-13 21:33:10,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=4471, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4763, PETRI_PLACES=190, PETRI_TRANSITIONS=232} [2022-12-13 21:33:10,238 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 139 predicate places. [2022-12-13 21:33:10,239 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 232 transitions, 4763 flow [2022-12-13 21:33:10,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:33:10,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:33:10,239 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:33:10,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (46)] Ended with exit code 0 [2022-12-13 21:33:10,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:33:10,440 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:33:10,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:33:10,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1382288441, now seen corresponding path program 4 times [2022-12-13 21:33:10,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:33:10,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183629201] [2022-12-13 21:33:10,442 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:33:10,443 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 [2022-12-13 21:33:10,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:33:10,445 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:33:10,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (47)] Waiting until timeout for monitored process [2022-12-13 21:33:10,632 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:33:10,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:33:10,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:33:10,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:33:10,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:33:10,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:33:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:33:11,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:33:11,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183629201] [2022-12-13 21:33:11,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183629201] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:33:11,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:33:11,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2022-12-13 21:33:11,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269276060] [2022-12-13 21:33:11,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:33:11,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:33:11,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:33:11,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:33:11,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:33:12,439 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 817 [2022-12-13 21:33:12,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 232 transitions, 4763 flow. Second operand has 7 states, 7 states have (on average 332.14285714285717) internal successors, (2325), 7 states have internal predecessors, (2325), 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) [2022-12-13 21:33:12,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:33:12,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 817 [2022-12-13 21:33:12,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:33:16,950 INFO L130 PetriNetUnfolder]: 10329/16804 cut-off events. [2022-12-13 21:33:16,950 INFO L131 PetriNetUnfolder]: For 232947/232947 co-relation queries the response was YES. [2022-12-13 21:33:17,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95180 conditions, 16804 events. 10329/16804 cut-off events. For 232947/232947 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 120718 event pairs, 4846 based on Foata normal form. 30/16834 useless extension candidates. Maximal degree in co-relation 95097. Up to 7242 conditions per place. [2022-12-13 21:33:17,116 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 244 selfloop transitions, 70 changer transitions 0/314 dead transitions. [2022-12-13 21:33:17,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 314 transitions, 6047 flow [2022-12-13 21:33:17,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:33:17,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:33:17,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2391 transitions. [2022-12-13 21:33:17,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41808008393075713 [2022-12-13 21:33:17,119 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2391 transitions. [2022-12-13 21:33:17,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2391 transitions. [2022-12-13 21:33:17,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:33:17,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2391 transitions. [2022-12-13 21:33:17,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 341.57142857142856) internal successors, (2391), 7 states have internal predecessors, (2391), 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) [2022-12-13 21:33:17,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:33:17,125 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:33:17,125 INFO L175 Difference]: Start difference. First operand has 190 places, 232 transitions, 4763 flow. Second operand 7 states and 2391 transitions. [2022-12-13 21:33:17,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 314 transitions, 6047 flow [2022-12-13 21:33:18,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 314 transitions, 5919 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-13 21:33:18,259 INFO L231 Difference]: Finished difference. Result has 195 places, 236 transitions, 4868 flow [2022-12-13 21:33:18,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=4635, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4868, PETRI_PLACES=195, PETRI_TRANSITIONS=236} [2022-12-13 21:33:18,260 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 144 predicate places. [2022-12-13 21:33:18,260 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 236 transitions, 4868 flow [2022-12-13 21:33:18,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 332.14285714285717) internal successors, (2325), 7 states have internal predecessors, (2325), 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) [2022-12-13 21:33:18,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:33:18,260 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:33:18,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (47)] Ended with exit code 0 [2022-12-13 21:33:18,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:33:18,461 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:33:18,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:33:18,462 INFO L85 PathProgramCache]: Analyzing trace with hash -2042222746, now seen corresponding path program 4 times [2022-12-13 21:33:18,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:33:18,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822148367] [2022-12-13 21:33:18,464 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:33:18,464 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 [2022-12-13 21:33:18,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:33:18,467 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:33:18,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (48)] Waiting until timeout for monitored process [2022-12-13 21:33:18,619 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:33:18,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:33:18,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:33:18,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:33:18,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:33:18,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:33:18,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:33:18,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822148367] [2022-12-13 21:33:18,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822148367] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:33:18,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:33:18,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:33:18,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775771781] [2022-12-13 21:33:18,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:33:18,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:33:18,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:33:18,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:33:18,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:33:19,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 817 [2022-12-13 21:33:19,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 236 transitions, 4868 flow. Second operand has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:33:19,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:33:19,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 817 [2022-12-13 21:33:19,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:33:23,523 INFO L130 PetriNetUnfolder]: 10299/16732 cut-off events. [2022-12-13 21:33:23,523 INFO L131 PetriNetUnfolder]: For 236796/236796 co-relation queries the response was YES. [2022-12-13 21:33:23,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96322 conditions, 16732 events. 10299/16732 cut-off events. For 236796/236796 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 119741 event pairs, 5092 based on Foata normal form. 6/16738 useless extension candidates. Maximal degree in co-relation 96237. Up to 7435 conditions per place. [2022-12-13 21:33:23,701 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 219 selfloop transitions, 71 changer transitions 6/296 dead transitions. [2022-12-13 21:33:23,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 296 transitions, 5828 flow [2022-12-13 21:33:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:33:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:33:23,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2349 transitions. [2022-12-13 21:33:23,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4107361426822871 [2022-12-13 21:33:23,704 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2349 transitions. [2022-12-13 21:33:23,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2349 transitions. [2022-12-13 21:33:23,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:33:23,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2349 transitions. [2022-12-13 21:33:23,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.57142857142856) internal successors, (2349), 7 states have internal predecessors, (2349), 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) [2022-12-13 21:33:23,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:33:23,710 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:33:23,710 INFO L175 Difference]: Start difference. First operand has 195 places, 236 transitions, 4868 flow. Second operand 7 states and 2349 transitions. [2022-12-13 21:33:23,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 296 transitions, 5828 flow [2022-12-13 21:33:24,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 296 transitions, 5706 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-13 21:33:24,888 INFO L231 Difference]: Finished difference. Result has 198 places, 234 transitions, 4836 flow [2022-12-13 21:33:24,889 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=4710, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4836, PETRI_PLACES=198, PETRI_TRANSITIONS=234} [2022-12-13 21:33:24,889 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 147 predicate places. [2022-12-13 21:33:24,889 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 234 transitions, 4836 flow [2022-12-13 21:33:24,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:33:24,889 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:33:24,889 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:33:24,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (48)] Forceful destruction successful, exit code 0 [2022-12-13 21:33:25,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:33:25,090 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:33:25,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:33:25,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1836369595, now seen corresponding path program 5 times [2022-12-13 21:33:25,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:33:25,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971370190] [2022-12-13 21:33:25,093 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:33:25,093 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 [2022-12-13 21:33:25,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:33:25,096 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:33:25,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (49)] Waiting until timeout for monitored process [2022-12-13 21:33:25,345 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 21:33:25,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:33:25,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:33:25,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:33:25,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:33:25,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:33:25,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:33:25,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971370190] [2022-12-13 21:33:25,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971370190] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:33:25,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:33:25,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:33:25,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721113810] [2022-12-13 21:33:25,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:33:25,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:33:25,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:33:25,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:33:25,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:33:25,859 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 817 [2022-12-13 21:33:25,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 234 transitions, 4836 flow. Second operand has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:33:25,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:33:25,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 817 [2022-12-13 21:33:25,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:33:30,185 INFO L130 PetriNetUnfolder]: 10278/16669 cut-off events. [2022-12-13 21:33:30,185 INFO L131 PetriNetUnfolder]: For 234142/234142 co-relation queries the response was YES. [2022-12-13 21:33:30,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96098 conditions, 16669 events. 10278/16669 cut-off events. For 234142/234142 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 118857 event pairs, 5080 based on Foata normal form. 4/16673 useless extension candidates. Maximal degree in co-relation 96013. Up to 7381 conditions per place. [2022-12-13 21:33:30,363 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 218 selfloop transitions, 70 changer transitions 4/292 dead transitions. [2022-12-13 21:33:30,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 292 transitions, 5790 flow [2022-12-13 21:33:30,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:33:30,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:33:30,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2346 transitions. [2022-12-13 21:33:30,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41021157545025355 [2022-12-13 21:33:30,366 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2346 transitions. [2022-12-13 21:33:30,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2346 transitions. [2022-12-13 21:33:30,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:33:30,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2346 transitions. [2022-12-13 21:33:30,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.14285714285717) internal successors, (2346), 7 states have internal predecessors, (2346), 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) [2022-12-13 21:33:30,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:33:30,371 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:33:30,371 INFO L175 Difference]: Start difference. First operand has 198 places, 234 transitions, 4836 flow. Second operand 7 states and 2346 transitions. [2022-12-13 21:33:30,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 292 transitions, 5790 flow [2022-12-13 21:33:31,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 292 transitions, 5648 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-12-13 21:33:31,434 INFO L231 Difference]: Finished difference. Result has 199 places, 233 transitions, 4810 flow [2022-12-13 21:33:31,434 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=4665, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4810, PETRI_PLACES=199, PETRI_TRANSITIONS=233} [2022-12-13 21:33:31,434 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 148 predicate places. [2022-12-13 21:33:31,434 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 233 transitions, 4810 flow [2022-12-13 21:33:31,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:33:31,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:33:31,435 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:33:31,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (49)] Ended with exit code 0 [2022-12-13 21:33:31,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:33:31,636 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:33:31,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:33:31,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1882106994, now seen corresponding path program 5 times [2022-12-13 21:33:31,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:33:31,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410057230] [2022-12-13 21:33:31,638 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:33:31,639 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 [2022-12-13 21:33:31,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:33:31,641 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:33:31,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (50)] Waiting until timeout for monitored process [2022-12-13 21:33:31,838 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 21:33:31,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:33:31,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:33:31,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:33:31,955 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:33:31,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:33:32,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:33:32,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:33:32,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410057230] [2022-12-13 21:33:32,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410057230] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:33:32,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:33:32,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2022-12-13 21:33:32,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263787259] [2022-12-13 21:33:32,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:33:32,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:33:32,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:33:32,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:33:32,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:33:32,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:33:32,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 233 transitions, 4810 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:33:32,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:33:32,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:33:32,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:33:38,291 INFO L130 PetriNetUnfolder]: 12601/20476 cut-off events. [2022-12-13 21:33:38,291 INFO L131 PetriNetUnfolder]: For 243241/243241 co-relation queries the response was YES. [2022-12-13 21:33:38,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114259 conditions, 20476 events. 12601/20476 cut-off events. For 243241/243241 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 152120 event pairs, 2209 based on Foata normal form. 24/20500 useless extension candidates. Maximal degree in co-relation 114173. Up to 9992 conditions per place. [2022-12-13 21:33:38,502 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 241 selfloop transitions, 79 changer transitions 2/322 dead transitions. [2022-12-13 21:33:38,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 322 transitions, 6372 flow [2022-12-13 21:33:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:33:38,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:33:38,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2373 transitions. [2022-12-13 21:33:38,505 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4149326805385557 [2022-12-13 21:33:38,506 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2373 transitions. [2022-12-13 21:33:38,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2373 transitions. [2022-12-13 21:33:38,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:33:38,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2373 transitions. [2022-12-13 21:33:38,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 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) [2022-12-13 21:33:38,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:33:38,511 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:33:38,511 INFO L175 Difference]: Start difference. First operand has 199 places, 233 transitions, 4810 flow. Second operand 7 states and 2373 transitions. [2022-12-13 21:33:38,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 322 transitions, 6372 flow [2022-12-13 21:33:40,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 322 transitions, 6168 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-12-13 21:33:40,010 INFO L231 Difference]: Finished difference. Result has 203 places, 248 transitions, 5191 flow [2022-12-13 21:33:40,010 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=4658, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5191, PETRI_PLACES=203, PETRI_TRANSITIONS=248} [2022-12-13 21:33:40,010 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 152 predicate places. [2022-12-13 21:33:40,010 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 248 transitions, 5191 flow [2022-12-13 21:33:40,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:33:40,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:33:40,011 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:33:40,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (50)] Ended with exit code 0 [2022-12-13 21:33:40,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:33:40,212 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:33:40,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:33:40,213 INFO L85 PathProgramCache]: Analyzing trace with hash 357807202, now seen corresponding path program 6 times [2022-12-13 21:33:40,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:33:40,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548129780] [2022-12-13 21:33:40,214 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 21:33:40,215 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 [2022-12-13 21:33:40,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:33:40,218 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:33:40,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (51)] Waiting until timeout for monitored process [2022-12-13 21:33:40,748 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 21:33:40,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:33:40,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:33:40,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:33:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:33:40,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:33:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:33:41,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:33:41,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548129780] [2022-12-13 21:33:41,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548129780] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:33:41,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:33:41,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2022-12-13 21:33:41,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4944486] [2022-12-13 21:33:41,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:33:41,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:33:41,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:33:41,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:33:41,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:33:42,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 817 [2022-12-13 21:33:42,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 248 transitions, 5191 flow. Second operand has 7 states, 7 states have (on average 332.14285714285717) internal successors, (2325), 7 states have internal predecessors, (2325), 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) [2022-12-13 21:33:42,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:33:42,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 817 [2022-12-13 21:33:42,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:33:49,040 INFO L130 PetriNetUnfolder]: 14191/23430 cut-off events. [2022-12-13 21:33:49,040 INFO L131 PetriNetUnfolder]: For 294749/294749 co-relation queries the response was YES. [2022-12-13 21:33:49,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127613 conditions, 23430 events. 14191/23430 cut-off events. For 294749/294749 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 182342 event pairs, 4794 based on Foata normal form. 40/23470 useless extension candidates. Maximal degree in co-relation 127523. Up to 9574 conditions per place. [2022-12-13 21:33:49,324 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 246 selfloop transitions, 85 changer transitions 0/331 dead transitions. [2022-12-13 21:33:49,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 331 transitions, 6504 flow [2022-12-13 21:33:49,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:33:49,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:33:49,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2391 transitions. [2022-12-13 21:33:49,328 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41808008393075713 [2022-12-13 21:33:49,328 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2391 transitions. [2022-12-13 21:33:49,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2391 transitions. [2022-12-13 21:33:49,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:33:49,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2391 transitions. [2022-12-13 21:33:49,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 341.57142857142856) internal successors, (2391), 7 states have internal predecessors, (2391), 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) [2022-12-13 21:33:49,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:33:49,333 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:33:49,333 INFO L175 Difference]: Start difference. First operand has 203 places, 248 transitions, 5191 flow. Second operand 7 states and 2391 transitions. [2022-12-13 21:33:49,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 331 transitions, 6504 flow [2022-12-13 21:33:51,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 331 transitions, 6386 flow, removed 21 selfloop flow, removed 2 redundant places. [2022-12-13 21:33:51,122 INFO L231 Difference]: Finished difference. Result has 210 places, 254 transitions, 5400 flow [2022-12-13 21:33:51,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=5073, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5400, PETRI_PLACES=210, PETRI_TRANSITIONS=254} [2022-12-13 21:33:51,123 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 159 predicate places. [2022-12-13 21:33:51,123 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 254 transitions, 5400 flow [2022-12-13 21:33:51,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 332.14285714285717) internal successors, (2325), 7 states have internal predecessors, (2325), 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) [2022-12-13 21:33:51,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:33:51,123 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:33:51,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (51)] Ended with exit code 0 [2022-12-13 21:33:51,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:33:51,324 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:33:51,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:33:51,325 INFO L85 PathProgramCache]: Analyzing trace with hash -889747904, now seen corresponding path program 7 times [2022-12-13 21:33:51,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:33:51,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827542997] [2022-12-13 21:33:51,327 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 21:33:51,327 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 [2022-12-13 21:33:51,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:33:51,330 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:33:51,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (52)] Waiting until timeout for monitored process [2022-12-13 21:33:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:33:51,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:33:51,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:33:51,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:33:51,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:33:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:33:52,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:33:52,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827542997] [2022-12-13 21:33:52,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827542997] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:33:52,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:33:52,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2022-12-13 21:33:52,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397757344] [2022-12-13 21:33:52,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:33:52,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:33:52,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:33:52,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:33:52,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:33:53,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:33:53,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 254 transitions, 5400 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:33:53,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:33:53,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:33:53,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:34:01,688 INFO L130 PetriNetUnfolder]: 18259/30396 cut-off events. [2022-12-13 21:34:01,689 INFO L131 PetriNetUnfolder]: For 352032/352032 co-relation queries the response was YES. [2022-12-13 21:34:01,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163438 conditions, 30396 events. 18259/30396 cut-off events. For 352032/352032 co-relation queries the response was YES. Maximal size of possible extension queue 1624. Compared 249742 event pairs, 6768 based on Foata normal form. 24/30420 useless extension candidates. Maximal degree in co-relation 163345. Up to 10239 conditions per place. [2022-12-13 21:34:02,081 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 265 selfloop transitions, 91 changer transitions 0/356 dead transitions. [2022-12-13 21:34:02,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 356 transitions, 7178 flow [2022-12-13 21:34:02,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:34:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:34:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2386 transitions. [2022-12-13 21:34:02,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41720580521070116 [2022-12-13 21:34:02,085 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2386 transitions. [2022-12-13 21:34:02,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2386 transitions. [2022-12-13 21:34:02,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:34:02,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2386 transitions. [2022-12-13 21:34:02,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 340.85714285714283) internal successors, (2386), 7 states have internal predecessors, (2386), 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) [2022-12-13 21:34:02,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:34:02,090 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:34:02,090 INFO L175 Difference]: Start difference. First operand has 210 places, 254 transitions, 5400 flow. Second operand 7 states and 2386 transitions. [2022-12-13 21:34:02,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 356 transitions, 7178 flow [2022-12-13 21:34:04,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 356 transitions, 6995 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 21:34:04,503 INFO L231 Difference]: Finished difference. Result has 216 places, 266 transitions, 5717 flow [2022-12-13 21:34:04,504 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=5237, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5717, PETRI_PLACES=216, PETRI_TRANSITIONS=266} [2022-12-13 21:34:04,504 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 165 predicate places. [2022-12-13 21:34:04,504 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 266 transitions, 5717 flow [2022-12-13 21:34:04,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:34:04,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:34:04,504 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:34:04,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (52)] Ended with exit code 0 [2022-12-13 21:34:04,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:34:04,706 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:34:04,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:04,707 INFO L85 PathProgramCache]: Analyzing trace with hash -36508433, now seen corresponding path program 6 times [2022-12-13 21:34:04,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:34:04,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216370354] [2022-12-13 21:34:04,709 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 21:34:04,709 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 [2022-12-13 21:34:04,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:34:04,712 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:34:04,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (53)] Waiting until timeout for monitored process [2022-12-13 21:34:04,959 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 21:34:04,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:34:04,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:34:04,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:34:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:34:05,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:34:05,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:34:05,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216370354] [2022-12-13 21:34:05,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216370354] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:34:05,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:34:05,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:34:05,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272740429] [2022-12-13 21:34:05,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:34:05,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:34:05,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:34:05,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:34:05,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:34:05,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 817 [2022-12-13 21:34:05,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 266 transitions, 5717 flow. Second operand has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:34:05,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:34:05,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 817 [2022-12-13 21:34:05,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:34:13,805 INFO L130 PetriNetUnfolder]: 18215/30316 cut-off events. [2022-12-13 21:34:13,806 INFO L131 PetriNetUnfolder]: For 371692/371692 co-relation queries the response was YES. [2022-12-13 21:34:14,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163605 conditions, 30316 events. 18215/30316 cut-off events. For 371692/371692 co-relation queries the response was YES. Maximal size of possible extension queue 1620. Compared 248296 event pairs, 7108 based on Foata normal form. 30/30346 useless extension candidates. Maximal degree in co-relation 163509. Up to 18866 conditions per place. [2022-12-13 21:34:14,209 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 229 selfloop transitions, 102 changer transitions 0/331 dead transitions. [2022-12-13 21:34:14,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 331 transitions, 6840 flow [2022-12-13 21:34:14,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:34:14,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:34:14,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2351 transitions. [2022-12-13 21:34:14,212 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4110858541703095 [2022-12-13 21:34:14,212 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2351 transitions. [2022-12-13 21:34:14,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2351 transitions. [2022-12-13 21:34:14,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:34:14,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2351 transitions. [2022-12-13 21:34:14,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.85714285714283) internal successors, (2351), 7 states have internal predecessors, (2351), 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) [2022-12-13 21:34:14,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:34:14,217 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:34:14,218 INFO L175 Difference]: Start difference. First operand has 216 places, 266 transitions, 5717 flow. Second operand 7 states and 2351 transitions. [2022-12-13 21:34:14,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 331 transitions, 6840 flow [2022-12-13 21:34:16,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 331 transitions, 6682 flow, removed 30 selfloop flow, removed 2 redundant places. [2022-12-13 21:34:16,802 INFO L231 Difference]: Finished difference. Result has 221 places, 267 transitions, 5808 flow [2022-12-13 21:34:16,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=5560, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5808, PETRI_PLACES=221, PETRI_TRANSITIONS=267} [2022-12-13 21:34:16,803 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 170 predicate places. [2022-12-13 21:34:16,803 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 267 transitions, 5808 flow [2022-12-13 21:34:16,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:34:16,803 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:34:16,803 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:34:16,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (53)] Ended with exit code 0 [2022-12-13 21:34:17,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:34:17,005 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:34:17,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:17,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1709088402, now seen corresponding path program 8 times [2022-12-13 21:34:17,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:34:17,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430041454] [2022-12-13 21:34:17,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:34:17,007 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 [2022-12-13 21:34:17,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:34:17,010 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:34:17,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (54)] Waiting until timeout for monitored process [2022-12-13 21:34:17,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:34:17,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:34:17,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:34:17,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:34:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:34:17,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:34:17,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:34:17,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430041454] [2022-12-13 21:34:17,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430041454] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:34:17,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:34:17,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:34:17,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909653108] [2022-12-13 21:34:17,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:34:17,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:34:17,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:34:17,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:34:17,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:34:17,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 817 [2022-12-13 21:34:17,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 267 transitions, 5808 flow. Second operand has 7 states, 7 states have (on average 330.14285714285717) internal successors, (2311), 7 states have internal predecessors, (2311), 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) [2022-12-13 21:34:17,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:34:17,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 817 [2022-12-13 21:34:17,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:34:25,843 INFO L130 PetriNetUnfolder]: 18153/30184 cut-off events. [2022-12-13 21:34:25,843 INFO L131 PetriNetUnfolder]: For 367044/367044 co-relation queries the response was YES. [2022-12-13 21:34:26,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163048 conditions, 30184 events. 18153/30184 cut-off events. For 367044/367044 co-relation queries the response was YES. Maximal size of possible extension queue 1605. Compared 247259 event pairs, 6108 based on Foata normal form. 24/30208 useless extension candidates. Maximal degree in co-relation 162951. Up to 15576 conditions per place. [2022-12-13 21:34:26,237 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 237 selfloop transitions, 103 changer transitions 0/340 dead transitions. [2022-12-13 21:34:26,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 340 transitions, 7011 flow [2022-12-13 21:34:26,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:34:26,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:34:26,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2374 transitions. [2022-12-13 21:34:26,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41510753628256686 [2022-12-13 21:34:26,240 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2374 transitions. [2022-12-13 21:34:26,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2374 transitions. [2022-12-13 21:34:26,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:34:26,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2374 transitions. [2022-12-13 21:34:26,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 339.14285714285717) internal successors, (2374), 7 states have internal predecessors, (2374), 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) [2022-12-13 21:34:26,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:34:26,245 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:34:26,245 INFO L175 Difference]: Start difference. First operand has 221 places, 267 transitions, 5808 flow. Second operand 7 states and 2374 transitions. [2022-12-13 21:34:26,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 340 transitions, 7011 flow [2022-12-13 21:34:28,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 340 transitions, 6791 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-12-13 21:34:28,670 INFO L231 Difference]: Finished difference. Result has 223 places, 267 transitions, 5799 flow [2022-12-13 21:34:28,670 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=5588, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5799, PETRI_PLACES=223, PETRI_TRANSITIONS=267} [2022-12-13 21:34:28,670 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 172 predicate places. [2022-12-13 21:34:28,670 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 267 transitions, 5799 flow [2022-12-13 21:34:28,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 330.14285714285717) internal successors, (2311), 7 states have internal predecessors, (2311), 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) [2022-12-13 21:34:28,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:34:28,671 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:34:28,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (54)] Ended with exit code 0 [2022-12-13 21:34:28,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:34:28,871 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:34:28,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:28,872 INFO L85 PathProgramCache]: Analyzing trace with hash 541234944, now seen corresponding path program 9 times [2022-12-13 21:34:28,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:34:28,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375513080] [2022-12-13 21:34:28,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:34:28,873 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 [2022-12-13 21:34:28,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:34:28,874 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:34:28,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (55)] Waiting until timeout for monitored process [2022-12-13 21:34:29,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 21:34:29,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:34:29,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:34:29,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:34:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:34:29,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:34:29,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:34:29,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375513080] [2022-12-13 21:34:29,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375513080] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:34:29,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:34:29,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:34:29,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272066342] [2022-12-13 21:34:29,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:34:29,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:34:29,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:34:29,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:34:29,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:34:29,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 817 [2022-12-13 21:34:29,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 267 transitions, 5799 flow. Second operand has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:34:29,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:34:29,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 817 [2022-12-13 21:34:29,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:34:37,877 INFO L130 PetriNetUnfolder]: 18123/30112 cut-off events. [2022-12-13 21:34:37,877 INFO L131 PetriNetUnfolder]: For 365362/365362 co-relation queries the response was YES. [2022-12-13 21:34:38,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162671 conditions, 30112 events. 18123/30112 cut-off events. For 365362/365362 co-relation queries the response was YES. Maximal size of possible extension queue 1604. Compared 245792 event pairs, 7040 based on Foata normal form. 6/30118 useless extension candidates. Maximal degree in co-relation 162573. Up to 18662 conditions per place. [2022-12-13 21:34:38,333 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 218 selfloop transitions, 101 changer transitions 6/325 dead transitions. [2022-12-13 21:34:38,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 325 transitions, 6811 flow [2022-12-13 21:34:38,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:34:38,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:34:38,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2346 transitions. [2022-12-13 21:34:38,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41021157545025355 [2022-12-13 21:34:38,336 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2346 transitions. [2022-12-13 21:34:38,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2346 transitions. [2022-12-13 21:34:38,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:34:38,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2346 transitions. [2022-12-13 21:34:38,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.14285714285717) internal successors, (2346), 7 states have internal predecessors, (2346), 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) [2022-12-13 21:34:38,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:34:38,342 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:34:38,342 INFO L175 Difference]: Start difference. First operand has 223 places, 267 transitions, 5799 flow. Second operand 7 states and 2346 transitions. [2022-12-13 21:34:38,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 325 transitions, 6811 flow [2022-12-13 21:34:40,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 325 transitions, 6625 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-13 21:34:40,696 INFO L231 Difference]: Finished difference. Result has 226 places, 266 transitions, 5783 flow [2022-12-13 21:34:40,696 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=5576, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5783, PETRI_PLACES=226, PETRI_TRANSITIONS=266} [2022-12-13 21:34:40,697 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 175 predicate places. [2022-12-13 21:34:40,697 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 266 transitions, 5783 flow [2022-12-13 21:34:40,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:34:40,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:34:40,697 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:34:40,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (55)] Forceful destruction successful, exit code 0 [2022-12-13 21:34:40,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:34:40,898 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:34:40,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:40,899 INFO L85 PathProgramCache]: Analyzing trace with hash -608154752, now seen corresponding path program 10 times [2022-12-13 21:34:40,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:34:40,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948070214] [2022-12-13 21:34:40,901 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:34:40,901 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 [2022-12-13 21:34:40,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:34:40,904 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:34:40,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (56)] Waiting until timeout for monitored process [2022-12-13 21:34:41,080 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:34:41,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:34:41,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:34:41,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:34:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:34:41,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:34:41,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:34:41,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948070214] [2022-12-13 21:34:41,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948070214] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:34:41,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:34:41,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:34:41,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601142544] [2022-12-13 21:34:41,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:34:41,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:34:41,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:34:41,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:34:41,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:34:41,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 817 [2022-12-13 21:34:41,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 266 transitions, 5783 flow. Second operand has 7 states, 7 states have (on average 330.14285714285717) internal successors, (2311), 7 states have internal predecessors, (2311), 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) [2022-12-13 21:34:41,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:34:41,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 817 [2022-12-13 21:34:41,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:34:50,113 INFO L130 PetriNetUnfolder]: 18283/30550 cut-off events. [2022-12-13 21:34:50,113 INFO L131 PetriNetUnfolder]: For 382754/382754 co-relation queries the response was YES. [2022-12-13 21:34:50,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164661 conditions, 30550 events. 18283/30550 cut-off events. For 382754/382754 co-relation queries the response was YES. Maximal size of possible extension queue 1643. Compared 250998 event pairs, 10066 based on Foata normal form. 6/30556 useless extension candidates. Maximal degree in co-relation 164562. Up to 19811 conditions per place. [2022-12-13 21:34:50,517 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 243 selfloop transitions, 110 changer transitions 8/361 dead transitions. [2022-12-13 21:34:50,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 361 transitions, 7604 flow [2022-12-13 21:34:50,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:34:50,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:34:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2376 transitions. [2022-12-13 21:34:50,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4154572477705893 [2022-12-13 21:34:50,520 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2376 transitions. [2022-12-13 21:34:50,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2376 transitions. [2022-12-13 21:34:50,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:34:50,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2376 transitions. [2022-12-13 21:34:50,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 339.42857142857144) internal successors, (2376), 7 states have internal predecessors, (2376), 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) [2022-12-13 21:34:50,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:34:50,525 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:34:50,525 INFO L175 Difference]: Start difference. First operand has 226 places, 266 transitions, 5783 flow. Second operand 7 states and 2376 transitions. [2022-12-13 21:34:50,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 361 transitions, 7604 flow [2022-12-13 21:34:52,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 361 transitions, 7360 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-12-13 21:34:52,912 INFO L231 Difference]: Finished difference. Result has 230 places, 281 transitions, 6153 flow [2022-12-13 21:34:52,912 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=5569, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6153, PETRI_PLACES=230, PETRI_TRANSITIONS=281} [2022-12-13 21:34:52,912 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 179 predicate places. [2022-12-13 21:34:52,912 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 281 transitions, 6153 flow [2022-12-13 21:34:52,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 330.14285714285717) internal successors, (2311), 7 states have internal predecessors, (2311), 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) [2022-12-13 21:34:52,913 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:34:52,913 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:34:52,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (56)] Ended with exit code 0 [2022-12-13 21:34:53,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:34:53,114 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:34:53,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:53,115 INFO L85 PathProgramCache]: Analyzing trace with hash -734772132, now seen corresponding path program 11 times [2022-12-13 21:34:53,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:34:53,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971778494] [2022-12-13 21:34:53,117 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:34:53,118 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 [2022-12-13 21:34:53,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:34:53,121 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:34:53,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (57)] Waiting until timeout for monitored process [2022-12-13 21:34:53,315 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 21:34:53,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:34:53,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:34:53,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:34:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:34:53,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:34:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:34:54,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:34:54,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971778494] [2022-12-13 21:34:54,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971778494] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:34:54,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:34:54,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:34:54,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890250465] [2022-12-13 21:34:54,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:34:54,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:34:54,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:34:54,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:34:54,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:34:55,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:34:55,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 281 transitions, 6153 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:34:55,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:34:55,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:34:55,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:05,148 INFO L130 PetriNetUnfolder]: 18254/30515 cut-off events. [2022-12-13 21:35:05,148 INFO L131 PetriNetUnfolder]: For 380158/380158 co-relation queries the response was YES. [2022-12-13 21:35:05,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165301 conditions, 30515 events. 18254/30515 cut-off events. For 380158/380158 co-relation queries the response was YES. Maximal size of possible extension queue 1642. Compared 250767 event pairs, 10198 based on Foata normal form. 24/30539 useless extension candidates. Maximal degree in co-relation 165198. Up to 19811 conditions per place. [2022-12-13 21:35:05,565 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 249 selfloop transitions, 117 changer transitions 0/366 dead transitions. [2022-12-13 21:35:05,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 366 transitions, 7734 flow [2022-12-13 21:35:05,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:35:05,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:35:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2388 transitions. [2022-12-13 21:35:05,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41755551669872354 [2022-12-13 21:35:05,569 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2388 transitions. [2022-12-13 21:35:05,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2388 transitions. [2022-12-13 21:35:05,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:05,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2388 transitions. [2022-12-13 21:35:05,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 341.14285714285717) internal successors, (2388), 7 states have internal predecessors, (2388), 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) [2022-12-13 21:35:05,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:35:05,574 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:35:05,574 INFO L175 Difference]: Start difference. First operand has 230 places, 281 transitions, 6153 flow. Second operand 7 states and 2388 transitions. [2022-12-13 21:35:05,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 366 transitions, 7734 flow [2022-12-13 21:35:07,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 366 transitions, 7573 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-12-13 21:35:07,825 INFO L231 Difference]: Finished difference. Result has 233 places, 282 transitions, 6264 flow [2022-12-13 21:35:07,825 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=6003, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6264, PETRI_PLACES=233, PETRI_TRANSITIONS=282} [2022-12-13 21:35:07,825 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 182 predicate places. [2022-12-13 21:35:07,825 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 282 transitions, 6264 flow [2022-12-13 21:35:07,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:35:07,826 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:07,826 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:07,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (57)] Forceful destruction successful, exit code 0 [2022-12-13 21:35:08,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:35:08,026 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:35:08,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:08,027 INFO L85 PathProgramCache]: Analyzing trace with hash 2076254609, now seen corresponding path program 7 times [2022-12-13 21:35:08,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:35:08,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267687786] [2022-12-13 21:35:08,028 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 21:35:08,028 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 [2022-12-13 21:35:08,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:35:08,029 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:35:08,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (58)] Waiting until timeout for monitored process [2022-12-13 21:35:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:08,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:35:08,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:35:08,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:35:08,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:35:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:35:09,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:35:09,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267687786] [2022-12-13 21:35:09,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267687786] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:35:09,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:35:09,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2022-12-13 21:35:09,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890998794] [2022-12-13 21:35:09,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:09,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:35:09,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:35:09,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:35:09,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:35:10,387 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:35:10,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 282 transitions, 6264 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:35:10,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:10,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:35:10,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:19,922 INFO L130 PetriNetUnfolder]: 19256/32411 cut-off events. [2022-12-13 21:35:19,922 INFO L131 PetriNetUnfolder]: For 402270/402270 co-relation queries the response was YES. [2022-12-13 21:35:20,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173915 conditions, 32411 events. 19256/32411 cut-off events. For 402270/402270 co-relation queries the response was YES. Maximal size of possible extension queue 1758. Compared 273300 event pairs, 7544 based on Foata normal form. 30/32441 useless extension candidates. Maximal degree in co-relation 173812. Up to 9897 conditions per place. [2022-12-13 21:35:20,378 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 303 selfloop transitions, 101 changer transitions 0/404 dead transitions. [2022-12-13 21:35:20,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 404 transitions, 8602 flow [2022-12-13 21:35:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:35:20,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:35:20,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2392 transitions. [2022-12-13 21:35:20,381 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4182549396747683 [2022-12-13 21:35:20,381 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2392 transitions. [2022-12-13 21:35:20,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2392 transitions. [2022-12-13 21:35:20,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:20,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2392 transitions. [2022-12-13 21:35:20,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 341.7142857142857) internal successors, (2392), 7 states have internal predecessors, (2392), 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) [2022-12-13 21:35:20,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:35:20,386 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:35:20,386 INFO L175 Difference]: Start difference. First operand has 233 places, 282 transitions, 6264 flow. Second operand 7 states and 2392 transitions. [2022-12-13 21:35:20,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 404 transitions, 8602 flow [2022-12-13 21:35:22,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 404 transitions, 8362 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-12-13 21:35:22,659 INFO L231 Difference]: Finished difference. Result has 237 places, 288 transitions, 6443 flow [2022-12-13 21:35:22,659 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=6024, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6443, PETRI_PLACES=237, PETRI_TRANSITIONS=288} [2022-12-13 21:35:22,660 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 186 predicate places. [2022-12-13 21:35:22,660 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 288 transitions, 6443 flow [2022-12-13 21:35:22,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:35:22,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:22,660 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:22,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (58)] Ended with exit code 0 [2022-12-13 21:35:22,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:35:22,861 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:35:22,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:22,862 INFO L85 PathProgramCache]: Analyzing trace with hash 319173198, now seen corresponding path program 12 times [2022-12-13 21:35:22,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:35:22,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866414398] [2022-12-13 21:35:22,864 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 21:35:22,864 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 [2022-12-13 21:35:22,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:35:22,867 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:35:22,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (59)] Waiting until timeout for monitored process [2022-12-13 21:35:23,210 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 21:35:23,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:35:23,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:35:23,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:35:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:35:23,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:35:23,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:35:23,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866414398] [2022-12-13 21:35:23,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866414398] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:35:23,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:35:23,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:35:23,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746544536] [2022-12-13 21:35:23,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:23,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:35:23,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:35:23,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:35:23,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:35:23,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 817 [2022-12-13 21:35:23,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 288 transitions, 6443 flow. Second operand has 7 states, 7 states have (on average 330.14285714285717) internal successors, (2311), 7 states have internal predecessors, (2311), 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) [2022-12-13 21:35:23,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:23,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 817 [2022-12-13 21:35:23,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:32,640 INFO L130 PetriNetUnfolder]: 19226/32339 cut-off events. [2022-12-13 21:35:32,640 INFO L131 PetriNetUnfolder]: For 421893/421893 co-relation queries the response was YES. [2022-12-13 21:35:33,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176784 conditions, 32339 events. 19226/32339 cut-off events. For 421893/421893 co-relation queries the response was YES. Maximal size of possible extension queue 1747. Compared 270679 event pairs, 10610 based on Foata normal form. 6/32345 useless extension candidates. Maximal degree in co-relation 176678. Up to 21707 conditions per place. [2022-12-13 21:35:33,124 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 252 selfloop transitions, 116 changer transitions 8/376 dead transitions. [2022-12-13 21:35:33,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 376 transitions, 8046 flow [2022-12-13 21:35:33,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:35:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:35:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2380 transitions. [2022-12-13 21:35:33,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41615667074663404 [2022-12-13 21:35:33,127 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2380 transitions. [2022-12-13 21:35:33,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2380 transitions. [2022-12-13 21:35:33,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:33,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2380 transitions. [2022-12-13 21:35:33,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 340.0) internal successors, (2380), 7 states have internal predecessors, (2380), 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) [2022-12-13 21:35:33,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:35:33,132 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:35:33,133 INFO L175 Difference]: Start difference. First operand has 237 places, 288 transitions, 6443 flow. Second operand 7 states and 2380 transitions. [2022-12-13 21:35:33,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 376 transitions, 8046 flow [2022-12-13 21:35:35,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 376 transitions, 7928 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-12-13 21:35:35,690 INFO L231 Difference]: Finished difference. Result has 242 places, 289 transitions, 6568 flow [2022-12-13 21:35:35,690 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=6283, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6568, PETRI_PLACES=242, PETRI_TRANSITIONS=289} [2022-12-13 21:35:35,691 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 191 predicate places. [2022-12-13 21:35:35,691 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 289 transitions, 6568 flow [2022-12-13 21:35:35,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 330.14285714285717) internal successors, (2311), 7 states have internal predecessors, (2311), 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) [2022-12-13 21:35:35,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:35,691 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:35,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (59)] Ended with exit code 0 [2022-12-13 21:35:35,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:35:35,892 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:35:35,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:35,893 INFO L85 PathProgramCache]: Analyzing trace with hash -21633987, now seen corresponding path program 8 times [2022-12-13 21:35:35,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:35:35,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309381872] [2022-12-13 21:35:35,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:35:35,896 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 [2022-12-13 21:35:35,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:35:35,898 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:35:35,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (60)] Waiting until timeout for monitored process [2022-12-13 21:35:36,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:35:36,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:35:36,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:35:36,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:35:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:35:36,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:35:36,892 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:35:36,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:35:36,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309381872] [2022-12-13 21:35:36,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309381872] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:35:36,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:35:36,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:35:36,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321328178] [2022-12-13 21:35:36,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:36,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:35:36,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:35:36,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:35:36,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:35:38,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:35:38,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 289 transitions, 6568 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:35:38,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:38,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:35:38,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:47,790 INFO L130 PetriNetUnfolder]: 19231/32368 cut-off events. [2022-12-13 21:35:47,790 INFO L131 PetriNetUnfolder]: For 424441/424441 co-relation queries the response was YES. [2022-12-13 21:35:48,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177591 conditions, 32368 events. 19231/32368 cut-off events. For 424441/424441 co-relation queries the response was YES. Maximal size of possible extension queue 1756. Compared 271727 event pairs, 8566 based on Foata normal form. 30/32398 useless extension candidates. Maximal degree in co-relation 177484. Up to 9897 conditions per place. [2022-12-13 21:35:48,292 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 296 selfloop transitions, 102 changer transitions 0/398 dead transitions. [2022-12-13 21:35:48,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 398 transitions, 8650 flow [2022-12-13 21:35:48,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:35:48,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:35:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2389 transitions. [2022-12-13 21:35:48,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41773037244273475 [2022-12-13 21:35:48,296 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2389 transitions. [2022-12-13 21:35:48,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2389 transitions. [2022-12-13 21:35:48,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:48,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2389 transitions. [2022-12-13 21:35:48,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 341.2857142857143) internal successors, (2389), 7 states have internal predecessors, (2389), 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) [2022-12-13 21:35:48,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:35:48,301 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:35:48,301 INFO L175 Difference]: Start difference. First operand has 242 places, 289 transitions, 6568 flow. Second operand 7 states and 2389 transitions. [2022-12-13 21:35:48,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 398 transitions, 8650 flow [2022-12-13 21:35:51,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 398 transitions, 8410 flow, removed 16 selfloop flow, removed 4 redundant places. [2022-12-13 21:35:51,018 INFO L231 Difference]: Finished difference. Result has 245 places, 297 transitions, 6744 flow [2022-12-13 21:35:51,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=6328, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6744, PETRI_PLACES=245, PETRI_TRANSITIONS=297} [2022-12-13 21:35:51,019 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 194 predicate places. [2022-12-13 21:35:51,019 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 297 transitions, 6744 flow [2022-12-13 21:35:51,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:35:51,019 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:51,019 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:51,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (60)] Ended with exit code 0 [2022-12-13 21:35:51,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:35:51,220 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:35:51,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:51,221 INFO L85 PathProgramCache]: Analyzing trace with hash -2074723599, now seen corresponding path program 9 times [2022-12-13 21:35:51,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:35:51,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528960717] [2022-12-13 21:35:51,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:35:51,223 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 [2022-12-13 21:35:51,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:35:51,226 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:35:51,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (61)] Waiting until timeout for monitored process [2022-12-13 21:35:51,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 21:35:51,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:35:51,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:35:51,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:35:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:35:51,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:35:51,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:35:51,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528960717] [2022-12-13 21:35:51,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528960717] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:35:51,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:35:51,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:35:51,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707810019] [2022-12-13 21:35:51,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:51,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:35:51,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:35:51,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:35:51,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:35:52,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 817 [2022-12-13 21:35:52,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 297 transitions, 6744 flow. Second operand has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:35:52,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:52,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 817 [2022-12-13 21:35:52,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:36:01,579 INFO L130 PetriNetUnfolder]: 19213/32314 cut-off events. [2022-12-13 21:36:01,579 INFO L131 PetriNetUnfolder]: For 434654/434654 co-relation queries the response was YES. [2022-12-13 21:36:01,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179764 conditions, 32314 events. 19213/32314 cut-off events. For 434654/434654 co-relation queries the response was YES. Maximal size of possible extension queue 1746. Compared 270340 event pairs, 10662 based on Foata normal form. 4/32318 useless extension candidates. Maximal degree in co-relation 179656. Up to 21693 conditions per place. [2022-12-13 21:36:02,042 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 250 selfloop transitions, 114 changer transitions 4/368 dead transitions. [2022-12-13 21:36:02,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 368 transitions, 8180 flow [2022-12-13 21:36:02,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:36:02,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:36:02,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2351 transitions. [2022-12-13 21:36:02,045 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4110858541703095 [2022-12-13 21:36:02,045 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2351 transitions. [2022-12-13 21:36:02,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2351 transitions. [2022-12-13 21:36:02,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:36:02,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2351 transitions. [2022-12-13 21:36:02,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.85714285714283) internal successors, (2351), 7 states have internal predecessors, (2351), 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) [2022-12-13 21:36:02,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:36:02,050 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:36:02,050 INFO L175 Difference]: Start difference. First operand has 245 places, 297 transitions, 6744 flow. Second operand 7 states and 2351 transitions. [2022-12-13 21:36:02,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 368 transitions, 8180 flow [2022-12-13 21:36:04,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 368 transitions, 8015 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-12-13 21:36:04,666 INFO L231 Difference]: Finished difference. Result has 248 places, 295 transitions, 6757 flow [2022-12-13 21:36:04,666 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=6552, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6757, PETRI_PLACES=248, PETRI_TRANSITIONS=295} [2022-12-13 21:36:04,667 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 197 predicate places. [2022-12-13 21:36:04,667 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 295 transitions, 6757 flow [2022-12-13 21:36:04,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:36:04,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:36:04,667 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:04,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (61)] Ended with exit code 0 [2022-12-13 21:36:04,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:36:04,868 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:36:04,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:04,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1008028766, now seen corresponding path program 13 times [2022-12-13 21:36:04,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:36:04,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901335818] [2022-12-13 21:36:04,871 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 21:36:04,871 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 [2022-12-13 21:36:04,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:36:04,874 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:36:04,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (62)] Waiting until timeout for monitored process [2022-12-13 21:36:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:05,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:36:05,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:36:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:36:05,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:36:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:36:06,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:36:06,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901335818] [2022-12-13 21:36:06,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901335818] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:36:06,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:36:06,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:36:06,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130400880] [2022-12-13 21:36:06,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:36:06,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:36:06,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:36:06,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:36:06,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:36:07,668 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:36:07,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 295 transitions, 6757 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:36:07,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:36:07,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:36:07,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:36:17,756 INFO L130 PetriNetUnfolder]: 19550/32941 cut-off events. [2022-12-13 21:36:17,756 INFO L131 PetriNetUnfolder]: For 443413/443413 co-relation queries the response was YES. [2022-12-13 21:36:18,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184030 conditions, 32941 events. 19550/32941 cut-off events. For 443413/443413 co-relation queries the response was YES. Maximal size of possible extension queue 1787. Compared 277147 event pairs, 10888 based on Foata normal form. 12/32953 useless extension candidates. Maximal degree in co-relation 183922. Up to 21753 conditions per place. [2022-12-13 21:36:18,270 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 262 selfloop transitions, 118 changer transitions 0/380 dead transitions. [2022-12-13 21:36:18,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 380 transitions, 8426 flow [2022-12-13 21:36:18,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:36:18,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:36:18,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2390 transitions. [2022-12-13 21:36:18,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4179052281867459 [2022-12-13 21:36:18,273 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2390 transitions. [2022-12-13 21:36:18,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2390 transitions. [2022-12-13 21:36:18,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:36:18,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2390 transitions. [2022-12-13 21:36:18,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 341.42857142857144) internal successors, (2390), 7 states have internal predecessors, (2390), 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) [2022-12-13 21:36:18,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:36:18,279 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:36:18,279 INFO L175 Difference]: Start difference. First operand has 248 places, 295 transitions, 6757 flow. Second operand 7 states and 2390 transitions. [2022-12-13 21:36:18,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 380 transitions, 8426 flow [2022-12-13 21:36:21,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 380 transitions, 8184 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 21:36:21,086 INFO L231 Difference]: Finished difference. Result has 251 places, 310 transitions, 7257 flow [2022-12-13 21:36:21,086 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=6529, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7257, PETRI_PLACES=251, PETRI_TRANSITIONS=310} [2022-12-13 21:36:21,086 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 200 predicate places. [2022-12-13 21:36:21,087 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 310 transitions, 7257 flow [2022-12-13 21:36:21,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:36:21,087 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:36:21,087 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:21,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (62)] Ended with exit code 0 [2022-12-13 21:36:21,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:36:21,288 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:36:21,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:21,289 INFO L85 PathProgramCache]: Analyzing trace with hash 105964112, now seen corresponding path program 14 times [2022-12-13 21:36:21,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:36:21,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174282794] [2022-12-13 21:36:21,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:36:21,291 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 [2022-12-13 21:36:21,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:36:21,294 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:36:21,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (63)] Waiting until timeout for monitored process [2022-12-13 21:36:21,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:36:21,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:36:21,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:36:21,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:36:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:36:21,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:36:21,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:36:21,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174282794] [2022-12-13 21:36:21,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174282794] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:36:21,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:36:21,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:36:21,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809675284] [2022-12-13 21:36:21,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:36:21,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:36:21,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:36:21,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:36:21,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:36:22,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 817 [2022-12-13 21:36:22,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 310 transitions, 7257 flow. Second operand has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:36:22,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:36:22,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 817 [2022-12-13 21:36:22,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:36:31,447 INFO L130 PetriNetUnfolder]: 19544/32935 cut-off events. [2022-12-13 21:36:31,447 INFO L131 PetriNetUnfolder]: For 449054/449054 co-relation queries the response was YES. [2022-12-13 21:36:31,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185038 conditions, 32935 events. 19544/32935 cut-off events. For 449054/449054 co-relation queries the response was YES. Maximal size of possible extension queue 1787. Compared 277345 event pairs, 10640 based on Foata normal form. 6/32941 useless extension candidates. Maximal degree in co-relation 184926. Up to 21753 conditions per place. [2022-12-13 21:36:31,993 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 245 selfloop transitions, 117 changer transitions 6/368 dead transitions. [2022-12-13 21:36:31,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 368 transitions, 8436 flow [2022-12-13 21:36:31,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:36:31,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:36:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2347 transitions. [2022-12-13 21:36:31,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4103864311942647 [2022-12-13 21:36:31,996 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2347 transitions. [2022-12-13 21:36:31,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2347 transitions. [2022-12-13 21:36:31,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:36:31,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2347 transitions. [2022-12-13 21:36:31,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.2857142857143) internal successors, (2347), 7 states have internal predecessors, (2347), 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) [2022-12-13 21:36:32,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:36:32,001 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:36:32,001 INFO L175 Difference]: Start difference. First operand has 251 places, 310 transitions, 7257 flow. Second operand 7 states and 2347 transitions. [2022-12-13 21:36:32,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 368 transitions, 8436 flow [2022-12-13 21:36:34,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 368 transitions, 8278 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-12-13 21:36:34,783 INFO L231 Difference]: Finished difference. Result has 256 places, 310 transitions, 7322 flow [2022-12-13 21:36:34,783 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=7064, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7322, PETRI_PLACES=256, PETRI_TRANSITIONS=310} [2022-12-13 21:36:34,783 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 205 predicate places. [2022-12-13 21:36:34,783 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 310 transitions, 7322 flow [2022-12-13 21:36:34,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:36:34,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:36:34,784 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:34,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (63)] Ended with exit code 0 [2022-12-13 21:36:34,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:36:34,985 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:36:34,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:34,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1130099968, now seen corresponding path program 15 times [2022-12-13 21:36:34,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:36:34,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763168066] [2022-12-13 21:36:34,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:36:34,988 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 [2022-12-13 21:36:34,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:36:34,990 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:36:34,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (64)] Waiting until timeout for monitored process [2022-12-13 21:36:35,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 21:36:35,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:36:35,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:36:35,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:36:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:36:35,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:36:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:36:35,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:36:35,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763168066] [2022-12-13 21:36:35,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763168066] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:36:35,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:36:35,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:36:35,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869955635] [2022-12-13 21:36:35,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:36:35,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:36:35,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:36:35,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:36:35,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:36:37,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:36:37,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 310 transitions, 7322 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:36:37,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:36:37,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:36:37,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:36:47,456 INFO L130 PetriNetUnfolder]: 19559/32956 cut-off events. [2022-12-13 21:36:47,456 INFO L131 PetriNetUnfolder]: For 454836/454836 co-relation queries the response was YES. [2022-12-13 21:36:47,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185393 conditions, 32956 events. 19559/32956 cut-off events. For 454836/454836 co-relation queries the response was YES. Maximal size of possible extension queue 1786. Compared 277454 event pairs, 10640 based on Foata normal form. 12/32968 useless extension candidates. Maximal degree in co-relation 185280. Up to 21753 conditions per place. [2022-12-13 21:36:47,979 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 249 selfloop transitions, 118 changer transitions 0/367 dead transitions. [2022-12-13 21:36:47,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 367 transitions, 8515 flow [2022-12-13 21:36:47,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:36:47,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:36:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2373 transitions. [2022-12-13 21:36:47,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4149326805385557 [2022-12-13 21:36:47,982 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2373 transitions. [2022-12-13 21:36:47,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2373 transitions. [2022-12-13 21:36:47,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:36:47,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2373 transitions. [2022-12-13 21:36:47,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 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) [2022-12-13 21:36:47,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:36:47,988 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:36:47,988 INFO L175 Difference]: Start difference. First operand has 256 places, 310 transitions, 7322 flow. Second operand 7 states and 2373 transitions. [2022-12-13 21:36:47,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 367 transitions, 8515 flow [2022-12-13 21:36:50,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 367 transitions, 8301 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-13 21:36:50,908 INFO L231 Difference]: Finished difference. Result has 259 places, 311 transitions, 7366 flow [2022-12-13 21:36:50,908 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=7109, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7366, PETRI_PLACES=259, PETRI_TRANSITIONS=311} [2022-12-13 21:36:50,909 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 208 predicate places. [2022-12-13 21:36:50,909 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 311 transitions, 7366 flow [2022-12-13 21:36:50,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:36:50,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:36:50,909 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:50,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (64)] Forceful destruction successful, exit code 0 [2022-12-13 21:36:51,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:36:51,110 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:36:51,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1462443905, now seen corresponding path program 10 times [2022-12-13 21:36:51,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:36:51,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881812634] [2022-12-13 21:36:51,113 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:36:51,113 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 [2022-12-13 21:36:51,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:36:51,116 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:36:51,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (65)] Waiting until timeout for monitored process [2022-12-13 21:36:51,621 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:36:51,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:36:51,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:36:51,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:36:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:36:51,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:36:52,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:36:52,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:36:52,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881812634] [2022-12-13 21:36:52,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881812634] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:36:52,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:36:52,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-13 21:36:52,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876026626] [2022-12-13 21:36:52,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:36:52,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:36:52,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:36:52,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:36:52,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:36:53,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 817 [2022-12-13 21:36:53,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 311 transitions, 7366 flow. Second operand has 12 states, 12 states have (on average 323.4166666666667) internal successors, (3881), 12 states have internal predecessors, (3881), 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) [2022-12-13 21:36:53,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:36:53,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 817 [2022-12-13 21:36:53,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:03,933 INFO L130 PetriNetUnfolder]: 19771/33302 cut-off events. [2022-12-13 21:37:03,933 INFO L131 PetriNetUnfolder]: For 461018/461018 co-relation queries the response was YES. [2022-12-13 21:37:04,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188616 conditions, 33302 events. 19771/33302 cut-off events. For 461018/461018 co-relation queries the response was YES. Maximal size of possible extension queue 1802. Compared 281348 event pairs, 8968 based on Foata normal form. 12/33314 useless extension candidates. Maximal degree in co-relation 188502. Up to 11540 conditions per place. [2022-12-13 21:37:04,442 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 282 selfloop transitions, 125 changer transitions 0/407 dead transitions. [2022-12-13 21:37:04,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 407 transitions, 9136 flow [2022-12-13 21:37:04,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:37:04,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:37:04,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2344 transitions. [2022-12-13 21:37:04,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4098618639622312 [2022-12-13 21:37:04,445 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2344 transitions. [2022-12-13 21:37:04,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2344 transitions. [2022-12-13 21:37:04,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:04,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2344 transitions. [2022-12-13 21:37:04,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 334.85714285714283) internal successors, (2344), 7 states have internal predecessors, (2344), 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) [2022-12-13 21:37:04,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:37:04,450 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:37:04,450 INFO L175 Difference]: Start difference. First operand has 259 places, 311 transitions, 7366 flow. Second operand 7 states and 2344 transitions. [2022-12-13 21:37:04,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 407 transitions, 9136 flow [2022-12-13 21:37:07,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 407 transitions, 8899 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 21:37:07,316 INFO L231 Difference]: Finished difference. Result has 264 places, 318 transitions, 7642 flow [2022-12-13 21:37:07,316 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=7133, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7642, PETRI_PLACES=264, PETRI_TRANSITIONS=318} [2022-12-13 21:37:07,316 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 213 predicate places. [2022-12-13 21:37:07,317 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 318 transitions, 7642 flow [2022-12-13 21:37:07,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 323.4166666666667) internal successors, (3881), 12 states have internal predecessors, (3881), 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) [2022-12-13 21:37:07,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:07,317 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:07,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (65)] Ended with exit code 0 [2022-12-13 21:37:07,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:37:07,518 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:37:07,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:07,519 INFO L85 PathProgramCache]: Analyzing trace with hash 623833389, now seen corresponding path program 11 times [2022-12-13 21:37:07,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:37:07,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985068599] [2022-12-13 21:37:07,520 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:37:07,521 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 [2022-12-13 21:37:07,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:37:07,523 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:37:07,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (66)] Waiting until timeout for monitored process [2022-12-13 21:37:07,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 21:37:07,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:37:07,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:37:07,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:37:08,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:37:08,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:37:08,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985068599] [2022-12-13 21:37:08,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985068599] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:08,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:37:08,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:37:08,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417638797] [2022-12-13 21:37:08,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:37:08,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:37:08,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:37:08,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:37:08,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:37:10,133 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:37:10,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 318 transitions, 7642 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:37:10,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:10,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:37:10,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:20,817 INFO L130 PetriNetUnfolder]: 19699/33170 cut-off events. [2022-12-13 21:37:20,817 INFO L131 PetriNetUnfolder]: For 479469/479469 co-relation queries the response was YES. [2022-12-13 21:37:21,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188809 conditions, 33170 events. 19699/33170 cut-off events. For 479469/479469 co-relation queries the response was YES. Maximal size of possible extension queue 1793. Compared 279955 event pairs, 8916 based on Foata normal form. 50/33220 useless extension candidates. Maximal degree in co-relation 188692. Up to 11540 conditions per place. [2022-12-13 21:37:21,370 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 277 selfloop transitions, 124 changer transitions 0/401 dead transitions. [2022-12-13 21:37:21,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 401 transitions, 9170 flow [2022-12-13 21:37:21,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:37:21,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:37:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2391 transitions. [2022-12-13 21:37:21,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41808008393075713 [2022-12-13 21:37:21,374 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2391 transitions. [2022-12-13 21:37:21,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2391 transitions. [2022-12-13 21:37:21,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:21,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2391 transitions. [2022-12-13 21:37:21,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 341.57142857142856) internal successors, (2391), 7 states have internal predecessors, (2391), 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) [2022-12-13 21:37:21,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:37:21,379 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:37:21,379 INFO L175 Difference]: Start difference. First operand has 264 places, 318 transitions, 7642 flow. Second operand 7 states and 2391 transitions. [2022-12-13 21:37:21,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 401 transitions, 9170 flow [2022-12-13 21:37:24,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 401 transitions, 8969 flow, removed 13 selfloop flow, removed 4 redundant places. [2022-12-13 21:37:24,320 INFO L231 Difference]: Finished difference. Result has 267 places, 318 transitions, 7703 flow [2022-12-13 21:37:24,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=7411, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7703, PETRI_PLACES=267, PETRI_TRANSITIONS=318} [2022-12-13 21:37:24,321 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 216 predicate places. [2022-12-13 21:37:24,321 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 318 transitions, 7703 flow [2022-12-13 21:37:24,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:37:24,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:24,321 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:24,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (66)] Ended with exit code 0 [2022-12-13 21:37:24,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:37:24,522 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:37:24,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:24,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1119507893, now seen corresponding path program 12 times [2022-12-13 21:37:24,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:37:24,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104560572] [2022-12-13 21:37:24,525 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 21:37:24,525 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 [2022-12-13 21:37:24,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:37:24,528 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:37:24,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (67)] Waiting until timeout for monitored process [2022-12-13 21:37:24,780 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 21:37:24,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:37:24,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:37:24,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:25,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:37:25,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:37:25,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:37:25,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104560572] [2022-12-13 21:37:25,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104560572] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:37:25,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:37:25,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:37:25,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692694484] [2022-12-13 21:37:25,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:37:25,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:37:25,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:37:25,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:37:25,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:37:25,468 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 817 [2022-12-13 21:37:25,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 318 transitions, 7703 flow. Second operand has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:37:25,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:25,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 817 [2022-12-13 21:37:25,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:35,050 INFO L130 PetriNetUnfolder]: 19695/33166 cut-off events. [2022-12-13 21:37:35,050 INFO L131 PetriNetUnfolder]: For 487270/487270 co-relation queries the response was YES. [2022-12-13 21:37:35,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189702 conditions, 33166 events. 19695/33166 cut-off events. For 487270/487270 co-relation queries the response was YES. Maximal size of possible extension queue 1788. Compared 278962 event pairs, 11072 based on Foata normal form. 4/33170 useless extension candidates. Maximal degree in co-relation 189584. Up to 21939 conditions per place. [2022-12-13 21:37:35,595 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 246 selfloop transitions, 122 changer transitions 4/372 dead transitions. [2022-12-13 21:37:35,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 372 transitions, 8854 flow [2022-12-13 21:37:35,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:37:35,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:37:35,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2349 transitions. [2022-12-13 21:37:35,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4107361426822871 [2022-12-13 21:37:35,598 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2349 transitions. [2022-12-13 21:37:35,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2349 transitions. [2022-12-13 21:37:35,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:35,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2349 transitions. [2022-12-13 21:37:35,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.57142857142856) internal successors, (2349), 7 states have internal predecessors, (2349), 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) [2022-12-13 21:37:35,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:37:35,603 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:37:35,603 INFO L175 Difference]: Start difference. First operand has 267 places, 318 transitions, 7703 flow. Second operand 7 states and 2349 transitions. [2022-12-13 21:37:35,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 372 transitions, 8854 flow [2022-12-13 21:37:38,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 372 transitions, 8625 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 21:37:38,595 INFO L231 Difference]: Finished difference. Result has 270 places, 318 transitions, 7727 flow [2022-12-13 21:37:38,595 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=7474, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7727, PETRI_PLACES=270, PETRI_TRANSITIONS=318} [2022-12-13 21:37:38,595 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 219 predicate places. [2022-12-13 21:37:38,595 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 318 transitions, 7727 flow [2022-12-13 21:37:38,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:37:38,596 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:38,596 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:38,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (67)] Forceful destruction successful, exit code 0 [2022-12-13 21:37:38,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:37:38,796 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:37:38,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:38,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1204542271, now seen corresponding path program 13 times [2022-12-13 21:37:38,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:37:38,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363471614] [2022-12-13 21:37:38,797 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 21:37:38,797 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 [2022-12-13 21:37:38,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:37:38,798 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:37:38,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (68)] Waiting until timeout for monitored process [2022-12-13 21:37:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:38,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:37:38,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:37:39,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:37:39,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:37:39,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363471614] [2022-12-13 21:37:39,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363471614] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:39,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:37:39,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:37:39,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002607888] [2022-12-13 21:37:39,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:37:39,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:37:39,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:37:39,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:37:39,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:37:41,444 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:37:41,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 318 transitions, 7727 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:37:41,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:41,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:37:41,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:52,510 INFO L130 PetriNetUnfolder]: 20124/33907 cut-off events. [2022-12-13 21:37:52,510 INFO L131 PetriNetUnfolder]: For 505797/505797 co-relation queries the response was YES. [2022-12-13 21:37:53,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195321 conditions, 33907 events. 20124/33907 cut-off events. For 505797/505797 co-relation queries the response was YES. Maximal size of possible extension queue 1830. Compared 286550 event pairs, 10158 based on Foata normal form. 12/33919 useless extension candidates. Maximal degree in co-relation 195202. Up to 14777 conditions per place. [2022-12-13 21:37:53,145 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 292 selfloop transitions, 129 changer transitions 0/421 dead transitions. [2022-12-13 21:37:53,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 421 transitions, 9741 flow [2022-12-13 21:37:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:37:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:37:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2390 transitions. [2022-12-13 21:37:53,148 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4179052281867459 [2022-12-13 21:37:53,148 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2390 transitions. [2022-12-13 21:37:53,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2390 transitions. [2022-12-13 21:37:53,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:53,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2390 transitions. [2022-12-13 21:37:53,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 341.42857142857144) internal successors, (2390), 7 states have internal predecessors, (2390), 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) [2022-12-13 21:37:53,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:37:53,153 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:37:53,154 INFO L175 Difference]: Start difference. First operand has 270 places, 318 transitions, 7727 flow. Second operand 7 states and 2390 transitions. [2022-12-13 21:37:53,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 421 transitions, 9741 flow [2022-12-13 21:37:56,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 421 transitions, 9461 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-12-13 21:37:56,353 INFO L231 Difference]: Finished difference. Result has 273 places, 335 transitions, 8176 flow [2022-12-13 21:37:56,354 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=7459, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8176, PETRI_PLACES=273, PETRI_TRANSITIONS=335} [2022-12-13 21:37:56,354 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 222 predicate places. [2022-12-13 21:37:56,354 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 335 transitions, 8176 flow [2022-12-13 21:37:56,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:37:56,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:56,354 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:56,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (68)] Ended with exit code 0 [2022-12-13 21:37:56,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:37:56,556 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:37:56,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:56,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2073406507, now seen corresponding path program 14 times [2022-12-13 21:37:56,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:37:56,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188380423] [2022-12-13 21:37:56,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:37:56,559 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 [2022-12-13 21:37:56,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:37:56,562 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:37:56,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (69)] Waiting until timeout for monitored process [2022-12-13 21:37:56,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:37:56,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:37:56,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:37:56,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:37:57,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:57,937 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:37:57,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:37:57,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188380423] [2022-12-13 21:37:57,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188380423] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:57,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:37:57,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:37:57,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373155536] [2022-12-13 21:37:57,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:37:57,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:37:57,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:37:57,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:37:57,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:37:59,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:37:59,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 335 transitions, 8176 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:37:59,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:59,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:37:59,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:38:09,612 INFO L130 PetriNetUnfolder]: 20120/33903 cut-off events. [2022-12-13 21:38:09,612 INFO L131 PetriNetUnfolder]: For 527263/527263 co-relation queries the response was YES. [2022-12-13 21:38:10,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198943 conditions, 33903 events. 20120/33903 cut-off events. For 527263/527263 co-relation queries the response was YES. Maximal size of possible extension queue 1824. Compared 286564 event pairs, 10158 based on Foata normal form. 12/33915 useless extension candidates. Maximal degree in co-relation 198822. Up to 14777 conditions per place. [2022-12-13 21:38:10,184 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 300 selfloop transitions, 125 changer transitions 0/425 dead transitions. [2022-12-13 21:38:10,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 425 transitions, 9904 flow [2022-12-13 21:38:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:38:10,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:38:10,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2388 transitions. [2022-12-13 21:38:10,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41755551669872354 [2022-12-13 21:38:10,188 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2388 transitions. [2022-12-13 21:38:10,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2388 transitions. [2022-12-13 21:38:10,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:38:10,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2388 transitions. [2022-12-13 21:38:10,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 341.14285714285717) internal successors, (2388), 7 states have internal predecessors, (2388), 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) [2022-12-13 21:38:10,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:38:10,193 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:38:10,193 INFO L175 Difference]: Start difference. First operand has 273 places, 335 transitions, 8176 flow. Second operand 7 states and 2388 transitions. [2022-12-13 21:38:10,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 425 transitions, 9904 flow [2022-12-13 21:38:13,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 425 transitions, 9698 flow, removed 47 selfloop flow, removed 3 redundant places. [2022-12-13 21:38:13,639 INFO L231 Difference]: Finished difference. Result has 279 places, 344 transitions, 8492 flow [2022-12-13 21:38:13,639 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=8020, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8492, PETRI_PLACES=279, PETRI_TRANSITIONS=344} [2022-12-13 21:38:13,640 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 228 predicate places. [2022-12-13 21:38:13,640 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 344 transitions, 8492 flow [2022-12-13 21:38:13,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:38:13,640 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:38:13,640 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:38:13,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (69)] Forceful destruction successful, exit code 0 [2022-12-13 21:38:13,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:38:13,841 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:38:13,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:38:13,842 INFO L85 PathProgramCache]: Analyzing trace with hash 13796353, now seen corresponding path program 15 times [2022-12-13 21:38:13,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:38:13,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586180522] [2022-12-13 21:38:13,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:38:13,844 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 [2022-12-13 21:38:13,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:38:13,847 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:38:13,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (70)] Waiting until timeout for monitored process [2022-12-13 21:38:14,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 21:38:14,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:38:14,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:38:14,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:38:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:38:14,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:38:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:38:15,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:38:15,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586180522] [2022-12-13 21:38:15,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586180522] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:38:15,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:38:15,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:38:15,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878951770] [2022-12-13 21:38:15,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:38:15,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:38:15,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:38:15,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:38:15,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:38:17,229 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:38:17,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 344 transitions, 8492 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:38:17,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:38:17,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:38:17,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:38:28,136 INFO L130 PetriNetUnfolder]: 20052/33761 cut-off events. [2022-12-13 21:38:28,136 INFO L131 PetriNetUnfolder]: For 526829/526829 co-relation queries the response was YES. [2022-12-13 21:38:28,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196859 conditions, 33761 events. 20052/33761 cut-off events. For 526829/526829 co-relation queries the response was YES. Maximal size of possible extension queue 1813. Compared 284702 event pairs, 10150 based on Foata normal form. 50/33811 useless extension candidates. Maximal degree in co-relation 196736. Up to 14787 conditions per place. [2022-12-13 21:38:28,778 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 289 selfloop transitions, 134 changer transitions 0/423 dead transitions. [2022-12-13 21:38:28,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 423 transitions, 10100 flow [2022-12-13 21:38:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:38:28,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:38:28,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2388 transitions. [2022-12-13 21:38:28,781 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41755551669872354 [2022-12-13 21:38:28,781 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2388 transitions. [2022-12-13 21:38:28,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2388 transitions. [2022-12-13 21:38:28,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:38:28,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2388 transitions. [2022-12-13 21:38:28,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 341.14285714285717) internal successors, (2388), 7 states have internal predecessors, (2388), 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) [2022-12-13 21:38:28,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:38:28,786 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:38:28,786 INFO L175 Difference]: Start difference. First operand has 279 places, 344 transitions, 8492 flow. Second operand 7 states and 2388 transitions. [2022-12-13 21:38:28,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 423 transitions, 10100 flow [2022-12-13 21:38:32,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 423 transitions, 9983 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-12-13 21:38:32,269 INFO L231 Difference]: Finished difference. Result has 285 places, 346 transitions, 8781 flow [2022-12-13 21:38:32,269 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=8347, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8781, PETRI_PLACES=285, PETRI_TRANSITIONS=346} [2022-12-13 21:38:32,270 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 234 predicate places. [2022-12-13 21:38:32,270 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 346 transitions, 8781 flow [2022-12-13 21:38:32,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:38:32,270 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:38:32,270 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:38:32,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (70)] Ended with exit code 0 [2022-12-13 21:38:32,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:38:32,471 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:38:32,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:38:32,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1243669631, now seen corresponding path program 16 times [2022-12-13 21:38:32,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:38:32,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693566915] [2022-12-13 21:38:32,474 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:38:32,474 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 [2022-12-13 21:38:32,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:38:32,477 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:38:32,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (71)] Waiting until timeout for monitored process [2022-12-13 21:38:32,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:38:32,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:38:32,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:38:32,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:38:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:38:32,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:38:32,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:38:32,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693566915] [2022-12-13 21:38:32,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693566915] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:38:32,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:38:32,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:38:32,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197840243] [2022-12-13 21:38:32,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:38:32,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:38:32,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:38:32,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:38:32,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:38:33,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 817 [2022-12-13 21:38:33,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 346 transitions, 8781 flow. Second operand has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:38:33,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:38:33,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 817 [2022-12-13 21:38:33,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:38:43,645 INFO L130 PetriNetUnfolder]: 20034/33707 cut-off events. [2022-12-13 21:38:43,645 INFO L131 PetriNetUnfolder]: For 545786/545786 co-relation queries the response was YES. [2022-12-13 21:38:44,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197921 conditions, 33707 events. 20034/33707 cut-off events. For 545786/545786 co-relation queries the response was YES. Maximal size of possible extension queue 1813. Compared 283934 event pairs, 11096 based on Foata normal form. 4/33711 useless extension candidates. Maximal degree in co-relation 197796. Up to 22415 conditions per place. [2022-12-13 21:38:44,216 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 264 selfloop transitions, 127 changer transitions 4/395 dead transitions. [2022-12-13 21:38:44,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 395 transitions, 9885 flow [2022-12-13 21:38:44,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:38:44,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:38:44,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2346 transitions. [2022-12-13 21:38:44,219 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41021157545025355 [2022-12-13 21:38:44,219 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2346 transitions. [2022-12-13 21:38:44,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2346 transitions. [2022-12-13 21:38:44,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:38:44,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2346 transitions. [2022-12-13 21:38:44,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.14285714285717) internal successors, (2346), 7 states have internal predecessors, (2346), 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) [2022-12-13 21:38:44,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:38:44,224 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:38:44,224 INFO L175 Difference]: Start difference. First operand has 285 places, 346 transitions, 8781 flow. Second operand 7 states and 2346 transitions. [2022-12-13 21:38:44,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 395 transitions, 9885 flow [2022-12-13 21:38:47,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 395 transitions, 9705 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 21:38:47,441 INFO L231 Difference]: Finished difference. Result has 288 places, 344 transitions, 8783 flow [2022-12-13 21:38:47,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=8561, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8783, PETRI_PLACES=288, PETRI_TRANSITIONS=344} [2022-12-13 21:38:47,442 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 237 predicate places. [2022-12-13 21:38:47,442 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 344 transitions, 8783 flow [2022-12-13 21:38:47,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:38:47,442 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:38:47,442 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:38:47,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (71)] Ended with exit code 0 [2022-12-13 21:38:47,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:38:47,643 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:38:47,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:38:47,644 INFO L85 PathProgramCache]: Analyzing trace with hash 169447821, now seen corresponding path program 17 times [2022-12-13 21:38:47,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:38:47,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654763894] [2022-12-13 21:38:47,646 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:38:47,646 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 [2022-12-13 21:38:47,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:38:47,649 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:38:47,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (72)] Waiting until timeout for monitored process [2022-12-13 21:38:48,075 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 21:38:48,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:38:48,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:38:48,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:38:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:38:48,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:38:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:38:49,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:38:49,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654763894] [2022-12-13 21:38:49,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654763894] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:38:49,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:38:49,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:38:49,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943163423] [2022-12-13 21:38:49,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:38:49,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:38:49,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:38:49,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:38:49,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:38:50,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:38:50,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 344 transitions, 8783 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:38:50,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:38:50,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:38:50,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:01,414 INFO L130 PetriNetUnfolder]: 19981/33590 cut-off events. [2022-12-13 21:39:01,414 INFO L131 PetriNetUnfolder]: For 540648/540648 co-relation queries the response was YES. [2022-12-13 21:39:01,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197379 conditions, 33590 events. 19981/33590 cut-off events. For 540648/540648 co-relation queries the response was YES. Maximal size of possible extension queue 1804. Compared 282719 event pairs, 10142 based on Foata normal form. 30/33620 useless extension candidates. Maximal degree in co-relation 197254. Up to 14787 conditions per place. [2022-12-13 21:39:02,046 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 295 selfloop transitions, 126 changer transitions 0/421 dead transitions. [2022-12-13 21:39:02,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 421 transitions, 10341 flow [2022-12-13 21:39:02,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:39:02,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:39:02,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2383 transitions. [2022-12-13 21:39:02,049 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4166812379786676 [2022-12-13 21:39:02,049 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2383 transitions. [2022-12-13 21:39:02,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2383 transitions. [2022-12-13 21:39:02,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:02,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2383 transitions. [2022-12-13 21:39:02,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 340.42857142857144) internal successors, (2383), 7 states have internal predecessors, (2383), 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) [2022-12-13 21:39:02,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:39:02,054 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:39:02,054 INFO L175 Difference]: Start difference. First operand has 288 places, 344 transitions, 8783 flow. Second operand 7 states and 2383 transitions. [2022-12-13 21:39:02,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 421 transitions, 10341 flow [2022-12-13 21:39:05,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 421 transitions, 10085 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-12-13 21:39:05,583 INFO L231 Difference]: Finished difference. Result has 290 places, 347 transitions, 8861 flow [2022-12-13 21:39:05,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=8505, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8861, PETRI_PLACES=290, PETRI_TRANSITIONS=347} [2022-12-13 21:39:05,583 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 239 predicate places. [2022-12-13 21:39:05,583 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 347 transitions, 8861 flow [2022-12-13 21:39:05,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:39:05,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:05,583 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:05,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (72)] Ended with exit code 0 [2022-12-13 21:39:05,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:39:05,785 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:39:05,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:05,785 INFO L85 PathProgramCache]: Analyzing trace with hash 2019132672, now seen corresponding path program 16 times [2022-12-13 21:39:05,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:39:05,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731432784] [2022-12-13 21:39:05,787 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:39:05,787 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 [2022-12-13 21:39:05,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:39:05,790 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:39:05,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (73)] Waiting until timeout for monitored process [2022-12-13 21:39:06,012 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:39:06,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:39:06,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:39:06,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:39:06,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:06,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:39:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:07,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:39:07,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731432784] [2022-12-13 21:39:07,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731432784] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:39:07,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:39:07,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:39:07,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741917197] [2022-12-13 21:39:07,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:07,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:39:07,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:39:07,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:39:07,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:39:08,490 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:39:08,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 347 transitions, 8861 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:39:08,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:08,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:39:08,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:20,203 INFO L130 PetriNetUnfolder]: 19933/33500 cut-off events. [2022-12-13 21:39:20,203 INFO L131 PetriNetUnfolder]: For 549349/549349 co-relation queries the response was YES. [2022-12-13 21:39:20,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196899 conditions, 33500 events. 19933/33500 cut-off events. For 549349/549349 co-relation queries the response was YES. Maximal size of possible extension queue 1798. Compared 281580 event pairs, 10892 based on Foata normal form. 24/33524 useless extension candidates. Maximal degree in co-relation 196774. Up to 22303 conditions per place. [2022-12-13 21:39:20,966 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 287 selfloop transitions, 129 changer transitions 0/416 dead transitions. [2022-12-13 21:39:20,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 416 transitions, 10197 flow [2022-12-13 21:39:20,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:39:20,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:39:20,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2390 transitions. [2022-12-13 21:39:20,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4179052281867459 [2022-12-13 21:39:20,970 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2390 transitions. [2022-12-13 21:39:20,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2390 transitions. [2022-12-13 21:39:20,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:20,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2390 transitions. [2022-12-13 21:39:20,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 341.42857142857144) internal successors, (2390), 7 states have internal predecessors, (2390), 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) [2022-12-13 21:39:20,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:39:20,977 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:39:20,977 INFO L175 Difference]: Start difference. First operand has 290 places, 347 transitions, 8861 flow. Second operand 7 states and 2390 transitions. [2022-12-13 21:39:20,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 416 transitions, 10197 flow [2022-12-13 21:39:24,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 416 transitions, 10055 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 21:39:24,761 INFO L231 Difference]: Finished difference. Result has 296 places, 350 transitions, 9084 flow [2022-12-13 21:39:24,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=8719, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9084, PETRI_PLACES=296, PETRI_TRANSITIONS=350} [2022-12-13 21:39:24,762 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 245 predicate places. [2022-12-13 21:39:24,762 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 350 transitions, 9084 flow [2022-12-13 21:39:24,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:39:24,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:24,762 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:24,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (73)] Ended with exit code 0 [2022-12-13 21:39:24,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:39:24,963 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:39:24,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:24,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1673371796, now seen corresponding path program 17 times [2022-12-13 21:39:24,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:39:24,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349352805] [2022-12-13 21:39:24,966 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:39:24,967 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 [2022-12-13 21:39:24,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:39:24,970 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:39:24,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (74)] Waiting until timeout for monitored process [2022-12-13 21:39:25,168 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 21:39:25,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:39:25,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:39:25,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:39:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:25,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:39:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:26,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:39:26,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349352805] [2022-12-13 21:39:26,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349352805] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:39:26,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:39:26,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:39:26,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824935671] [2022-12-13 21:39:26,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:26,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:39:26,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:39:26,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:39:26,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:39:27,325 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:39:27,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 350 transitions, 9084 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:39:27,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:27,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:39:27,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:38,466 INFO L130 PetriNetUnfolder]: 19921/33482 cut-off events. [2022-12-13 21:39:38,466 INFO L131 PetriNetUnfolder]: For 562583/562583 co-relation queries the response was YES. [2022-12-13 21:39:38,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197395 conditions, 33482 events. 19921/33482 cut-off events. For 562583/562583 co-relation queries the response was YES. Maximal size of possible extension queue 1796. Compared 281342 event pairs, 10910 based on Foata normal form. 12/33494 useless extension candidates. Maximal degree in co-relation 197268. Up to 22303 conditions per place. [2022-12-13 21:39:39,062 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 288 selfloop transitions, 129 changer transitions 0/417 dead transitions. [2022-12-13 21:39:39,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 417 transitions, 10346 flow [2022-12-13 21:39:39,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:39:39,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:39:39,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2386 transitions. [2022-12-13 21:39:39,066 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41720580521070116 [2022-12-13 21:39:39,066 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2386 transitions. [2022-12-13 21:39:39,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2386 transitions. [2022-12-13 21:39:39,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:39,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2386 transitions. [2022-12-13 21:39:39,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 340.85714285714283) internal successors, (2386), 7 states have internal predecessors, (2386), 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) [2022-12-13 21:39:39,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:39:39,099 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:39:39,099 INFO L175 Difference]: Start difference. First operand has 296 places, 350 transitions, 9084 flow. Second operand 7 states and 2386 transitions. [2022-12-13 21:39:39,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 417 transitions, 10346 flow [2022-12-13 21:39:42,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 417 transitions, 10154 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-13 21:39:42,435 INFO L231 Difference]: Finished difference. Result has 298 places, 352 transitions, 9164 flow [2022-12-13 21:39:42,435 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=8860, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9164, PETRI_PLACES=298, PETRI_TRANSITIONS=352} [2022-12-13 21:39:42,436 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 247 predicate places. [2022-12-13 21:39:42,436 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 352 transitions, 9164 flow [2022-12-13 21:39:42,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:39:42,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:42,436 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:42,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (74)] Ended with exit code 0 [2022-12-13 21:39:42,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:39:42,637 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:39:42,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:42,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1597459644, now seen corresponding path program 18 times [2022-12-13 21:39:42,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:39:42,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738117401] [2022-12-13 21:39:42,639 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 21:39:42,640 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 [2022-12-13 21:39:42,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:39:42,642 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:39:42,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (75)] Waiting until timeout for monitored process [2022-12-13 21:39:42,912 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 21:39:42,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:39:42,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:39:42,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:39:43,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:43,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:39:43,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:39:43,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738117401] [2022-12-13 21:39:43,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738117401] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:43,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:39:43,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:39:43,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903620353] [2022-12-13 21:39:43,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:43,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:39:43,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:39:43,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:39:43,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:39:43,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 817 [2022-12-13 21:39:43,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 352 transitions, 9164 flow. Second operand has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:39:43,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:43,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 817 [2022-12-13 21:39:43,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:53,739 INFO L130 PetriNetUnfolder]: 19891/33410 cut-off events. [2022-12-13 21:39:53,739 INFO L131 PetriNetUnfolder]: For 575568/575568 co-relation queries the response was YES. [2022-12-13 21:39:54,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200320 conditions, 33410 events. 19891/33410 cut-off events. For 575568/575568 co-relation queries the response was YES. Maximal size of possible extension queue 1790. Compared 280252 event pairs, 10964 based on Foata normal form. 6/33416 useless extension candidates. Maximal degree in co-relation 200194. Up to 22303 conditions per place. [2022-12-13 21:39:54,378 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 270 selfloop transitions, 130 changer transitions 6/406 dead transitions. [2022-12-13 21:39:54,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 406 transitions, 10348 flow [2022-12-13 21:39:54,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:39:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:39:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2350 transitions. [2022-12-13 21:39:54,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4109109984262983 [2022-12-13 21:39:54,380 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2350 transitions. [2022-12-13 21:39:54,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2350 transitions. [2022-12-13 21:39:54,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:54,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2350 transitions. [2022-12-13 21:39:54,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.7142857142857) internal successors, (2350), 7 states have internal predecessors, (2350), 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) [2022-12-13 21:39:54,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:39:54,385 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:39:54,385 INFO L175 Difference]: Start difference. First operand has 298 places, 352 transitions, 9164 flow. Second operand 7 states and 2350 transitions. [2022-12-13 21:39:54,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 406 transitions, 10348 flow [2022-12-13 21:39:57,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 406 transitions, 10066 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-12-13 21:39:57,838 INFO L231 Difference]: Finished difference. Result has 300 places, 351 transitions, 9106 flow [2022-12-13 21:39:57,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=8882, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9106, PETRI_PLACES=300, PETRI_TRANSITIONS=351} [2022-12-13 21:39:57,838 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 249 predicate places. [2022-12-13 21:39:57,838 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 351 transitions, 9106 flow [2022-12-13 21:39:57,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:39:57,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:57,838 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:57,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (75)] Ended with exit code 0 [2022-12-13 21:39:58,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:39:58,039 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:39:58,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:58,040 INFO L85 PathProgramCache]: Analyzing trace with hash -118420908, now seen corresponding path program 19 times [2022-12-13 21:39:58,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:39:58,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933620752] [2022-12-13 21:39:58,042 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 21:39:58,042 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 [2022-12-13 21:39:58,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:39:58,045 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:39:58,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (76)] Waiting until timeout for monitored process [2022-12-13 21:39:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:58,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:39:58,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:39:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:58,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:39:58,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:39:58,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933620752] [2022-12-13 21:39:58,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933620752] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:58,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:39:58,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:39:58,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142613703] [2022-12-13 21:39:58,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:58,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:39:58,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:39:58,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:39:58,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:39:58,961 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 817 [2022-12-13 21:39:58,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 351 transitions, 9106 flow. Second operand has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:39:58,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:58,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 817 [2022-12-13 21:39:58,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:40:09,837 INFO L130 PetriNetUnfolder]: 19860/33331 cut-off events. [2022-12-13 21:40:09,837 INFO L131 PetriNetUnfolder]: For 570002/570002 co-relation queries the response was YES. [2022-12-13 21:40:10,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199706 conditions, 33331 events. 19860/33331 cut-off events. For 570002/570002 co-relation queries the response was YES. Maximal size of possible extension queue 1783. Compared 279249 event pairs, 10944 based on Foata normal form. 6/33337 useless extension candidates. Maximal degree in co-relation 199580. Up to 22303 conditions per place. [2022-12-13 21:40:10,692 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 268 selfloop transitions, 128 changer transitions 6/402 dead transitions. [2022-12-13 21:40:10,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 402 transitions, 10227 flow [2022-12-13 21:40:10,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:40:10,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:40:10,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2348 transitions. [2022-12-13 21:40:10,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4105612869382759 [2022-12-13 21:40:10,695 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2348 transitions. [2022-12-13 21:40:10,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2348 transitions. [2022-12-13 21:40:10,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:40:10,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2348 transitions. [2022-12-13 21:40:10,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.42857142857144) internal successors, (2348), 7 states have internal predecessors, (2348), 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) [2022-12-13 21:40:10,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:40:10,699 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:40:10,700 INFO L175 Difference]: Start difference. First operand has 300 places, 351 transitions, 9106 flow. Second operand 7 states and 2348 transitions. [2022-12-13 21:40:10,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 402 transitions, 10227 flow [2022-12-13 21:40:13,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 402 transitions, 9989 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 21:40:13,984 INFO L231 Difference]: Finished difference. Result has 301 places, 349 transitions, 9049 flow [2022-12-13 21:40:13,984 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=8818, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9049, PETRI_PLACES=301, PETRI_TRANSITIONS=349} [2022-12-13 21:40:13,984 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 250 predicate places. [2022-12-13 21:40:13,984 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 349 transitions, 9049 flow [2022-12-13 21:40:13,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:40:13,984 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:40:13,985 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:13,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (76)] Ended with exit code 0 [2022-12-13 21:40:14,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:40:14,185 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:40:14,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:14,186 INFO L85 PathProgramCache]: Analyzing trace with hash 789786768, now seen corresponding path program 20 times [2022-12-13 21:40:14,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:14,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386654538] [2022-12-13 21:40:14,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:40:14,188 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 [2022-12-13 21:40:14,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:14,191 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:40:14,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (77)] Waiting until timeout for monitored process [2022-12-13 21:40:14,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:40:14,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:40:14,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:40:14,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:40:14,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:40:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:40:15,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:15,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386654538] [2022-12-13 21:40:15,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386654538] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:40:15,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:40:15,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:40:15,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628582240] [2022-12-13 21:40:15,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:15,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:40:15,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:15,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:40:15,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:40:16,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:40:16,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 349 transitions, 9049 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:40:16,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:40:16,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:40:16,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:40:27,891 INFO L130 PetriNetUnfolder]: 19819/33230 cut-off events. [2022-12-13 21:40:27,891 INFO L131 PetriNetUnfolder]: For 569103/569103 co-relation queries the response was YES. [2022-12-13 21:40:28,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199271 conditions, 33230 events. 19819/33230 cut-off events. For 569103/569103 co-relation queries the response was YES. Maximal size of possible extension queue 1775. Compared 277881 event pairs, 10884 based on Foata normal form. 24/33254 useless extension candidates. Maximal degree in co-relation 199146. Up to 22319 conditions per place. [2022-12-13 21:40:28,467 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 281 selfloop transitions, 127 changer transitions 0/408 dead transitions. [2022-12-13 21:40:28,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 408 transitions, 10312 flow [2022-12-13 21:40:28,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:40:28,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:40:28,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2377 transitions. [2022-12-13 21:40:28,471 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41563210351460045 [2022-12-13 21:40:28,471 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2377 transitions. [2022-12-13 21:40:28,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2377 transitions. [2022-12-13 21:40:28,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:40:28,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2377 transitions. [2022-12-13 21:40:28,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 339.57142857142856) internal successors, (2377), 7 states have internal predecessors, (2377), 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) [2022-12-13 21:40:28,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:40:28,476 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:40:28,476 INFO L175 Difference]: Start difference. First operand has 301 places, 349 transitions, 9049 flow. Second operand 7 states and 2377 transitions. [2022-12-13 21:40:28,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 408 transitions, 10312 flow [2022-12-13 21:40:31,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 408 transitions, 10049 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 21:40:31,809 INFO L231 Difference]: Finished difference. Result has 300 places, 351 transitions, 9074 flow [2022-12-13 21:40:31,809 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=8765, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9074, PETRI_PLACES=300, PETRI_TRANSITIONS=351} [2022-12-13 21:40:31,809 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 249 predicate places. [2022-12-13 21:40:31,809 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 351 transitions, 9074 flow [2022-12-13 21:40:31,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:40:31,810 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:40:31,810 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:31,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (77)] Forceful destruction successful, exit code 0 [2022-12-13 21:40:32,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:40:32,011 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:40:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:32,012 INFO L85 PathProgramCache]: Analyzing trace with hash 442307538, now seen corresponding path program 21 times [2022-12-13 21:40:32,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:32,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318580731] [2022-12-13 21:40:32,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:40:32,013 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 [2022-12-13 21:40:32,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:32,016 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:40:32,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (78)] Waiting until timeout for monitored process [2022-12-13 21:40:32,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 21:40:32,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:40:32,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:40:32,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:32,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:40:32,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:40:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:40:33,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:33,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318580731] [2022-12-13 21:40:33,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318580731] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:40:33,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:40:33,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:40:33,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998922191] [2022-12-13 21:40:33,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:33,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:40:33,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:33,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:40:33,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:40:34,579 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:40:34,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 351 transitions, 9074 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:40:34,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:40:34,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:40:34,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:40:45,356 INFO L130 PetriNetUnfolder]: 19783/33152 cut-off events. [2022-12-13 21:40:45,356 INFO L131 PetriNetUnfolder]: For 559846/559846 co-relation queries the response was YES. [2022-12-13 21:40:45,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201882 conditions, 33152 events. 19783/33152 cut-off events. For 559846/559846 co-relation queries the response was YES. Maximal size of possible extension queue 1768. Compared 278138 event pairs, 8156 based on Foata normal form. 12/33164 useless extension candidates. Maximal degree in co-relation 201758. Up to 11189 conditions per place. [2022-12-13 21:40:45,929 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 303 selfloop transitions, 144 changer transitions 0/447 dead transitions. [2022-12-13 21:40:45,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 447 transitions, 11108 flow [2022-12-13 21:40:45,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:40:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:40:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2387 transitions. [2022-12-13 21:40:45,933 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4173806609547124 [2022-12-13 21:40:45,933 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2387 transitions. [2022-12-13 21:40:45,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2387 transitions. [2022-12-13 21:40:45,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:40:45,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2387 transitions. [2022-12-13 21:40:45,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 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) [2022-12-13 21:40:45,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:40:45,938 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:40:45,938 INFO L175 Difference]: Start difference. First operand has 300 places, 351 transitions, 9074 flow. Second operand 7 states and 2387 transitions. [2022-12-13 21:40:45,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 447 transitions, 11108 flow [2022-12-13 21:40:50,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 447 transitions, 10860 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 21:40:50,156 INFO L231 Difference]: Finished difference. Result has 306 places, 361 transitions, 9507 flow [2022-12-13 21:40:50,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=8846, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9507, PETRI_PLACES=306, PETRI_TRANSITIONS=361} [2022-12-13 21:40:50,157 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 255 predicate places. [2022-12-13 21:40:50,157 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 361 transitions, 9507 flow [2022-12-13 21:40:50,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:40:50,157 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:40:50,157 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:50,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (78)] Ended with exit code 0 [2022-12-13 21:40:50,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:40:50,358 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:40:50,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2096853354, now seen corresponding path program 22 times [2022-12-13 21:40:50,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:50,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878696435] [2022-12-13 21:40:50,360 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:40:50,360 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 [2022-12-13 21:40:50,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:50,361 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:40:50,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (79)] Waiting until timeout for monitored process [2022-12-13 21:40:50,593 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:40:50,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:40:50,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:40:50,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:40:50,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:40:51,506 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:40:51,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:51,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878696435] [2022-12-13 21:40:51,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878696435] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:40:51,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:40:51,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:40:51,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74622638] [2022-12-13 21:40:51,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:51,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:40:51,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:51,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:40:51,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:40:53,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:40:53,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 361 transitions, 9507 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:40:53,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:40:53,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:40:53,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:41:03,999 INFO L130 PetriNetUnfolder]: 19735/33062 cut-off events. [2022-12-13 21:41:03,999 INFO L131 PetriNetUnfolder]: For 585606/585606 co-relation queries the response was YES. [2022-12-13 21:41:04,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202847 conditions, 33062 events. 19735/33062 cut-off events. For 585606/585606 co-relation queries the response was YES. Maximal size of possible extension queue 1758. Compared 277232 event pairs, 8126 based on Foata normal form. 24/33086 useless extension candidates. Maximal degree in co-relation 202720. Up to 11189 conditions per place. [2022-12-13 21:41:04,656 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 304 selfloop transitions, 142 changer transitions 0/446 dead transitions. [2022-12-13 21:41:04,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 446 transitions, 11232 flow [2022-12-13 21:41:04,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:41:04,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:41:04,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2387 transitions. [2022-12-13 21:41:04,660 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4173806609547124 [2022-12-13 21:41:04,660 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2387 transitions. [2022-12-13 21:41:04,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2387 transitions. [2022-12-13 21:41:04,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:41:04,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2387 transitions. [2022-12-13 21:41:04,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 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) [2022-12-13 21:41:04,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:41:04,665 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:41:04,665 INFO L175 Difference]: Start difference. First operand has 306 places, 361 transitions, 9507 flow. Second operand 7 states and 2387 transitions. [2022-12-13 21:41:04,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 446 transitions, 11232 flow [2022-12-13 21:41:08,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 446 transitions, 10996 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-12-13 21:41:08,991 INFO L231 Difference]: Finished difference. Result has 310 places, 361 transitions, 9576 flow [2022-12-13 21:41:08,991 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=9251, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9576, PETRI_PLACES=310, PETRI_TRANSITIONS=361} [2022-12-13 21:41:08,991 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 259 predicate places. [2022-12-13 21:41:08,991 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 361 transitions, 9576 flow [2022-12-13 21:41:08,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:41:08,992 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:41:08,992 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:09,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (79)] Ended with exit code 0 [2022-12-13 21:41:09,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:41:09,193 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:41:09,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:09,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1023295165, now seen corresponding path program 18 times [2022-12-13 21:41:09,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:41:09,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622320973] [2022-12-13 21:41:09,195 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 21:41:09,195 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 [2022-12-13 21:41:09,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:41:09,198 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:41:09,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (80)] Waiting until timeout for monitored process [2022-12-13 21:41:09,442 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 21:41:09,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:41:09,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:41:09,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:41:09,742 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:41:09,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:41:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:41:10,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:41:10,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622320973] [2022-12-13 21:41:10,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622320973] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:41:10,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:41:10,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:41:10,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165397482] [2022-12-13 21:41:10,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:10,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:41:10,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:41:10,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:41:10,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:41:12,156 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:41:12,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 361 transitions, 9576 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:41:12,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:41:12,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:41:12,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:41:23,468 INFO L130 PetriNetUnfolder]: 19751/33090 cut-off events. [2022-12-13 21:41:23,469 INFO L131 PetriNetUnfolder]: For 597660/597660 co-relation queries the response was YES. [2022-12-13 21:41:23,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203828 conditions, 33090 events. 19751/33090 cut-off events. For 597660/597660 co-relation queries the response was YES. Maximal size of possible extension queue 1762. Compared 276769 event pairs, 10830 based on Foata normal form. 12/33102 useless extension candidates. Maximal degree in co-relation 203700. Up to 22561 conditions per place. [2022-12-13 21:41:24,114 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 291 selfloop transitions, 146 changer transitions 0/437 dead transitions. [2022-12-13 21:41:24,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 437 transitions, 11150 flow [2022-12-13 21:41:24,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:41:24,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:41:24,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2388 transitions. [2022-12-13 21:41:24,118 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41755551669872354 [2022-12-13 21:41:24,118 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2388 transitions. [2022-12-13 21:41:24,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2388 transitions. [2022-12-13 21:41:24,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:41:24,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2388 transitions. [2022-12-13 21:41:24,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 341.14285714285717) internal successors, (2388), 7 states have internal predecessors, (2388), 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) [2022-12-13 21:41:24,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:41:24,125 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:41:24,125 INFO L175 Difference]: Start difference. First operand has 310 places, 361 transitions, 9576 flow. Second operand 7 states and 2388 transitions. [2022-12-13 21:41:24,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 437 transitions, 11150 flow [2022-12-13 21:41:28,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 437 transitions, 10872 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-13 21:41:28,233 INFO L231 Difference]: Finished difference. Result has 314 places, 366 transitions, 9770 flow [2022-12-13 21:41:28,233 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=9304, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9770, PETRI_PLACES=314, PETRI_TRANSITIONS=366} [2022-12-13 21:41:28,233 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 263 predicate places. [2022-12-13 21:41:28,233 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 366 transitions, 9770 flow [2022-12-13 21:41:28,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:41:28,234 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:41:28,234 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:28,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (80)] Forceful destruction successful, exit code 0 [2022-12-13 21:41:28,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:41:28,435 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:41:28,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:28,436 INFO L85 PathProgramCache]: Analyzing trace with hash -475106172, now seen corresponding path program 23 times [2022-12-13 21:41:28,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:41:28,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379537453] [2022-12-13 21:41:28,437 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:41:28,438 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 [2022-12-13 21:41:28,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:41:28,440 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:41:28,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (81)] Waiting until timeout for monitored process [2022-12-13 21:41:28,728 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 21:41:28,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:41:28,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:41:28,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:41:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:41:29,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:41:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:41:29,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:41:29,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379537453] [2022-12-13 21:41:29,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379537453] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:41:29,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:41:29,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:41:29,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144041104] [2022-12-13 21:41:29,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:29,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:41:29,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:41:29,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:41:29,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:41:31,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:41:31,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 366 transitions, 9770 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:41:31,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:41:31,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:41:31,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:41:43,227 INFO L130 PetriNetUnfolder]: 19985/33548 cut-off events. [2022-12-13 21:41:43,227 INFO L131 PetriNetUnfolder]: For 611199/611199 co-relation queries the response was YES. [2022-12-13 21:41:43,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207514 conditions, 33548 events. 19985/33548 cut-off events. For 611199/611199 co-relation queries the response was YES. Maximal size of possible extension queue 1791. Compared 281955 event pairs, 8968 based on Foata normal form. 12/33560 useless extension candidates. Maximal degree in co-relation 207384. Up to 12858 conditions per place. [2022-12-13 21:41:43,875 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 331 selfloop transitions, 133 changer transitions 0/464 dead transitions. [2022-12-13 21:41:43,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 464 transitions, 11834 flow [2022-12-13 21:41:43,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:41:43,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:41:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2390 transitions. [2022-12-13 21:41:43,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4179052281867459 [2022-12-13 21:41:43,878 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2390 transitions. [2022-12-13 21:41:43,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2390 transitions. [2022-12-13 21:41:43,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:41:43,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2390 transitions. [2022-12-13 21:41:43,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 341.42857142857144) internal successors, (2390), 7 states have internal predecessors, (2390), 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) [2022-12-13 21:41:43,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:41:43,883 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:41:43,883 INFO L175 Difference]: Start difference. First operand has 314 places, 366 transitions, 9770 flow. Second operand 7 states and 2390 transitions. [2022-12-13 21:41:43,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 464 transitions, 11834 flow [2022-12-13 21:41:48,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 464 transitions, 11490 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-12-13 21:41:48,388 INFO L231 Difference]: Finished difference. Result has 319 places, 384 transitions, 10257 flow [2022-12-13 21:41:48,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=9434, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10257, PETRI_PLACES=319, PETRI_TRANSITIONS=384} [2022-12-13 21:41:48,389 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 268 predicate places. [2022-12-13 21:41:48,389 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 384 transitions, 10257 flow [2022-12-13 21:41:48,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:41:48,390 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:41:48,390 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:48,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (81)] Forceful destruction successful, exit code 0 [2022-12-13 21:41:48,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:41:48,591 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:41:48,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:48,592 INFO L85 PathProgramCache]: Analyzing trace with hash -755833328, now seen corresponding path program 24 times [2022-12-13 21:41:48,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:41:48,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671538404] [2022-12-13 21:41:48,593 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 21:41:48,594 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 [2022-12-13 21:41:48,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:41:48,596 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:41:48,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (82)] Waiting until timeout for monitored process [2022-12-13 21:41:48,871 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 21:41:48,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:41:48,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:41:48,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:41:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:41:49,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:41:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:41:49,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:41:49,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671538404] [2022-12-13 21:41:49,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671538404] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:41:49,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:41:49,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2022-12-13 21:41:49,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113485066] [2022-12-13 21:41:49,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:49,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:41:49,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:41:49,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:41:49,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:41:50,441 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:41:50,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 384 transitions, 10257 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:41:50,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:41:50,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:41:50,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:42:02,088 INFO L130 PetriNetUnfolder]: 20933/35346 cut-off events. [2022-12-13 21:42:02,088 INFO L131 PetriNetUnfolder]: For 620253/620253 co-relation queries the response was YES. [2022-12-13 21:42:02,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218127 conditions, 35346 events. 20933/35346 cut-off events. For 620253/620253 co-relation queries the response was YES. Maximal size of possible extension queue 1910. Compared 302639 event pairs, 7232 based on Foata normal form. 40/35386 useless extension candidates. Maximal degree in co-relation 217994. Up to 11189 conditions per place. [2022-12-13 21:42:02,781 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 345 selfloop transitions, 140 changer transitions 0/485 dead transitions. [2022-12-13 21:42:02,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 485 transitions, 12309 flow [2022-12-13 21:42:02,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:42:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:42:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2384 transitions. [2022-12-13 21:42:02,784 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4168560937226788 [2022-12-13 21:42:02,784 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2384 transitions. [2022-12-13 21:42:02,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2384 transitions. [2022-12-13 21:42:02,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:42:02,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2384 transitions. [2022-12-13 21:42:02,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 340.57142857142856) internal successors, (2384), 7 states have internal predecessors, (2384), 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) [2022-12-13 21:42:02,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:42:02,789 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:42:02,789 INFO L175 Difference]: Start difference. First operand has 319 places, 384 transitions, 10257 flow. Second operand 7 states and 2384 transitions. [2022-12-13 21:42:02,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 485 transitions, 12309 flow [2022-12-13 21:42:07,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 485 transitions, 12104 flow, removed 42 selfloop flow, removed 3 redundant places. [2022-12-13 21:42:07,715 INFO L231 Difference]: Finished difference. Result has 325 places, 389 transitions, 10584 flow [2022-12-13 21:42:07,716 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=10038, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10584, PETRI_PLACES=325, PETRI_TRANSITIONS=389} [2022-12-13 21:42:07,716 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 274 predicate places. [2022-12-13 21:42:07,716 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 389 transitions, 10584 flow [2022-12-13 21:42:07,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:42:07,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:42:07,716 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:42:07,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (82)] Ended with exit code 0 [2022-12-13 21:42:07,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:42:07,917 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:42:07,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:42:07,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1075866745, now seen corresponding path program 19 times [2022-12-13 21:42:07,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:42:07,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674345263] [2022-12-13 21:42:07,920 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 21:42:07,920 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 [2022-12-13 21:42:07,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:42:07,923 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:42:07,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (83)] Waiting until timeout for monitored process [2022-12-13 21:42:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:42:08,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:42:08,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:42:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:42:08,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:42:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:42:09,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:42:09,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674345263] [2022-12-13 21:42:09,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674345263] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:42:09,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:42:09,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:42:09,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796832637] [2022-12-13 21:42:09,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:42:09,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:42:09,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:42:09,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:42:09,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:42:11,129 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:42:11,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 389 transitions, 10584 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:42:11,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:42:11,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:42:11,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:42:23,969 INFO L130 PetriNetUnfolder]: 20861/35214 cut-off events. [2022-12-13 21:42:23,969 INFO L131 PetriNetUnfolder]: For 646393/646393 co-relation queries the response was YES. [2022-12-13 21:42:24,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218915 conditions, 35214 events. 20861/35214 cut-off events. For 646393/646393 co-relation queries the response was YES. Maximal size of possible extension queue 1901. Compared 300086 event pairs, 11358 based on Foata normal form. 50/35264 useless extension candidates. Maximal degree in co-relation 218780. Up to 24781 conditions per place. [2022-12-13 21:42:24,698 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 307 selfloop transitions, 151 changer transitions 0/458 dead transitions. [2022-12-13 21:42:24,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 458 transitions, 12041 flow [2022-12-13 21:42:24,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:42:24,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:42:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2388 transitions. [2022-12-13 21:42:24,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41755551669872354 [2022-12-13 21:42:24,701 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2388 transitions. [2022-12-13 21:42:24,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2388 transitions. [2022-12-13 21:42:24,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:42:24,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2388 transitions. [2022-12-13 21:42:24,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 341.14285714285717) internal successors, (2388), 7 states have internal predecessors, (2388), 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) [2022-12-13 21:42:24,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:42:24,706 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:42:24,706 INFO L175 Difference]: Start difference. First operand has 325 places, 389 transitions, 10584 flow. Second operand 7 states and 2388 transitions. [2022-12-13 21:42:24,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 458 transitions, 12041 flow [2022-12-13 21:42:29,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 458 transitions, 11901 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-12-13 21:42:29,495 INFO L231 Difference]: Finished difference. Result has 330 places, 390 transitions, 10784 flow [2022-12-13 21:42:29,495 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=10448, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10784, PETRI_PLACES=330, PETRI_TRANSITIONS=390} [2022-12-13 21:42:29,495 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 279 predicate places. [2022-12-13 21:42:29,495 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 390 transitions, 10784 flow [2022-12-13 21:42:29,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:42:29,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:42:29,496 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:42:29,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (83)] Forceful destruction successful, exit code 0 [2022-12-13 21:42:29,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:42:29,696 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:42:29,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:42:29,696 INFO L85 PathProgramCache]: Analyzing trace with hash -398521936, now seen corresponding path program 25 times [2022-12-13 21:42:29,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:42:29,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372709968] [2022-12-13 21:42:29,697 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 21:42:29,697 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 [2022-12-13 21:42:29,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:42:29,698 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:42:29,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (84)] Waiting until timeout for monitored process [2022-12-13 21:42:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:42:29,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:42:29,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:42:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:42:30,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:42:30,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:42:30,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372709968] [2022-12-13 21:42:30,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372709968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:42:30,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:42:30,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:42:30,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781240100] [2022-12-13 21:42:30,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:42:30,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:42:30,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:42:30,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:42:30,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:42:30,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 817 [2022-12-13 21:42:30,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 390 transitions, 10784 flow. Second operand has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:42:30,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:42:30,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 817 [2022-12-13 21:42:30,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:42:41,736 INFO L130 PetriNetUnfolder]: 20831/35142 cut-off events. [2022-12-13 21:42:41,736 INFO L131 PetriNetUnfolder]: For 648861/648861 co-relation queries the response was YES. [2022-12-13 21:42:42,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216456 conditions, 35142 events. 20831/35142 cut-off events. For 648861/648861 co-relation queries the response was YES. Maximal size of possible extension queue 1895. Compared 298901 event pairs, 11344 based on Foata normal form. 6/35148 useless extension candidates. Maximal degree in co-relation 216320. Up to 24709 conditions per place. [2022-12-13 21:42:42,544 INFO L137 encePairwiseOnDemand]: 809/817 looper letters, 294 selfloop transitions, 154 changer transitions 6/454 dead transitions. [2022-12-13 21:42:42,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 454 transitions, 12179 flow [2022-12-13 21:42:42,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:42:42,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:42:42,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2349 transitions. [2022-12-13 21:42:42,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4107361426822871 [2022-12-13 21:42:42,547 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2349 transitions. [2022-12-13 21:42:42,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2349 transitions. [2022-12-13 21:42:42,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:42:42,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2349 transitions. [2022-12-13 21:42:42,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.57142857142856) internal successors, (2349), 7 states have internal predecessors, (2349), 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) [2022-12-13 21:42:42,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:42:42,554 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 817.0) internal successors, (6536), 8 states have internal predecessors, (6536), 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) [2022-12-13 21:42:42,554 INFO L175 Difference]: Start difference. First operand has 330 places, 390 transitions, 10784 flow. Second operand 7 states and 2349 transitions. [2022-12-13 21:42:42,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 454 transitions, 12179 flow [2022-12-13 21:42:47,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 454 transitions, 11776 flow, removed 5 selfloop flow, removed 8 redundant places. [2022-12-13 21:42:47,631 INFO L231 Difference]: Finished difference. Result has 329 places, 389 transitions, 10657 flow [2022-12-13 21:42:47,631 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=817, PETRI_DIFFERENCE_MINUEND_FLOW=10344, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10657, PETRI_PLACES=329, PETRI_TRANSITIONS=389} [2022-12-13 21:42:47,631 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 278 predicate places. [2022-12-13 21:42:47,631 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 389 transitions, 10657 flow [2022-12-13 21:42:47,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 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) [2022-12-13 21:42:47,632 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:42:47,632 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:42:47,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (84)] Ended with exit code 0 [2022-12-13 21:42:47,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:42:47,833 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 21:42:47,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:42:47,834 INFO L85 PathProgramCache]: Analyzing trace with hash 509685740, now seen corresponding path program 26 times [2022-12-13 21:42:47,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:42:47,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523356551] [2022-12-13 21:42:47,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:42:47,835 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 [2022-12-13 21:42:47,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:42:47,838 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:42:47,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e5f9d61-ce10-43e0-a641-675e9518ad1b/bin/uautomizer-uyxdKDjOR8/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 (85)] Waiting until timeout for monitored process [2022-12-13 21:42:48,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:42:48,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:42:48,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:42:48,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:42:48,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:42:48,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:42:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:42:48,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:42:48,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523356551] [2022-12-13 21:42:48,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523356551] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:42:48,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:42:48,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 21:42:48,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14703436] [2022-12-13 21:42:48,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:42:48,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:42:48,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:42:48,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:42:48,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:42:49,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 817 [2022-12-13 21:42:49,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 389 transitions, 10657 flow. Second operand has 7 states, 7 states have (on average 331.14285714285717) internal successors, (2318), 7 states have internal predecessors, (2318), 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) [2022-12-13 21:42:49,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:42:49,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 817 [2022-12-13 21:42:49,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand