./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --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 e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:11:49,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:11:49,437 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:11:49,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:11:49,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:11:49,464 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:11:49,465 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:11:49,466 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:11:49,467 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:11:49,468 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:11:49,469 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:11:49,469 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:11:49,470 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:11:49,471 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:11:49,471 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:11:49,472 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:11:49,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:11:49,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:11:49,474 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:11:49,474 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:11:49,475 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:11:49,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:11:49,476 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:11:49,476 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:11:49,477 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:11:49,477 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:11:49,478 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:11:49,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:11:49,479 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:11:49,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:11:49,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:11:49,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:11:49,481 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:11:49,481 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:11:49,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:11:49,482 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:11:49,482 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:11:49,483 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:11:49,483 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:11:49,484 INFO L153 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_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2023-11-21 22:11:49,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:11:49,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:11:49,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:11:49,817 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:11:49,817 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:11:49,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-21 22:11:52,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:11:53,135 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:11:53,136 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-21 22:11:53,144 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/data/e8b6ac667/2629fd39c1084379959791cbecfdbb81/FLAG42cd3a94f [2023-11-21 22:11:53,159 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/data/e8b6ac667/2629fd39c1084379959791cbecfdbb81 [2023-11-21 22:11:53,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:11:53,164 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:11:53,165 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:11:53,165 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:11:53,171 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:11:53,171 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:11:53" (1/1) ... [2023-11-21 22:11:53,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186f6bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:53, skipping insertion in model container [2023-11-21 22:11:53,173 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:11:53" (1/1) ... [2023-11-21 22:11:53,201 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:11:53,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:11:53,464 ERROR L324 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) [2023-11-21 22:11:53,465 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10a8f368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:53, skipping insertion in model container [2023-11-21 22:11:53,465 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:11:53,465 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 22:11:53,468 INFO L158 Benchmark]: Toolchain (without parser) took 302.72ms. Allocated memory is still 190.8MB. Free memory was 146.2MB in the beginning and 135.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 22:11:53,469 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory was 73.9MB in the beginning and 73.8MB in the end (delta: 26.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:11:53,470 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.13ms. Allocated memory is still 190.8MB. Free memory was 145.8MB in the beginning and 135.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 22:11:53,472 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory was 73.9MB in the beginning and 73.8MB in the end (delta: 26.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.13ms. Allocated memory is still 190.8MB. Free memory was 145.8MB in the beginning and 135.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 111]: 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_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --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 e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:11:55,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:11:56,070 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 22:11:56,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:11:56,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:11:56,127 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:11:56,128 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:11:56,129 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:11:56,129 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:11:56,130 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:11:56,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:11:56,131 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:11:56,132 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:11:56,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:11:56,133 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:11:56,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:11:56,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:11:56,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:11:56,135 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:11:56,135 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:11:56,136 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:11:56,143 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:11:56,143 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:11:56,143 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:11:56,144 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:11:56,144 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:11:56,145 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:11:56,145 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:11:56,146 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:11:56,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:11:56,148 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:11:56,148 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:11:56,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:11:56,149 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:11:56,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:11:56,150 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:11:56,150 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:11:56,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:11:56,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:11:56,152 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:11:56,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:11:56,152 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:11:56,153 INFO L153 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_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2023-11-21 22:11:56,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:11:56,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:11:56,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:11:56,587 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:11:56,588 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:11:56,589 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-21 22:11:59,654 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:11:59,912 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:11:59,913 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-21 22:11:59,921 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/data/32ba9138d/1070e6560d2b4a24841db06e72ee4ff1/FLAG02503458a [2023-11-21 22:11:59,936 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/data/32ba9138d/1070e6560d2b4a24841db06e72ee4ff1 [2023-11-21 22:11:59,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:11:59,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:11:59,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:11:59,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:11:59,957 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:11:59,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:11:59" (1/1) ... [2023-11-21 22:11:59,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770857b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:59, skipping insertion in model container [2023-11-21 22:11:59,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:11:59" (1/1) ... [2023-11-21 22:11:59,986 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:12:00,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:12:00,188 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 22:12:00,193 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:12:00,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:12:00,221 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:12:00,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:12:00,270 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:12:00,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:00 WrapperNode [2023-11-21 22:12:00,271 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:12:00,272 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:12:00,272 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:12:00,273 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:12:00,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:00" (1/1) ... [2023-11-21 22:12:00,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:00" (1/1) ... [2023-11-21 22:12:00,327 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 208 [2023-11-21 22:12:00,327 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:12:00,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:12:00,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:12:00,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:12:00,338 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:00" (1/1) ... [2023-11-21 22:12:00,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:00" (1/1) ... [2023-11-21 22:12:00,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:00" (1/1) ... [2023-11-21 22:12:00,345 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:00" (1/1) ... [2023-11-21 22:12:00,361 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:00" (1/1) ... [2023-11-21 22:12:00,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:00" (1/1) ... [2023-11-21 22:12:00,371 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:00" (1/1) ... [2023-11-21 22:12:00,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:00" (1/1) ... [2023-11-21 22:12:00,394 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:12:00,395 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:12:00,396 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:12:00,396 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:12:00,397 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:00" (1/1) ... [2023-11-21 22:12:00,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:12:00,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:00,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:12:00,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:12:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:12:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 22:12:00,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:12:00,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 22:12:00,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-21 22:12:00,520 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-21 22:12:00,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-21 22:12:00,520 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-21 22:12:00,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-21 22:12:00,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-21 22:12:00,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:12:00,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:12:00,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:12:00,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:12:00,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 22:12:00,526 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:12:00,737 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:12:00,742 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:12:01,636 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:12:02,059 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:12:02,059 INFO L308 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-21 22:12:02,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:12:02 BoogieIcfgContainer [2023-11-21 22:12:02,062 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:12:02,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:12:02,064 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:12:02,068 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:12:02,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:11:59" (1/3) ... [2023-11-21 22:12:02,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba690ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:12:02, skipping insertion in model container [2023-11-21 22:12:02,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:00" (2/3) ... [2023-11-21 22:12:02,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba690ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:12:02, skipping insertion in model container [2023-11-21 22:12:02,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:12:02" (3/3) ... [2023-11-21 22:12:02,074 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2023-11-21 22:12:02,095 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:12:02,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-21 22:12:02,095 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:12:02,205 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-21 22:12:02,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 125 transitions, 271 flow [2023-11-21 22:12:02,340 INFO L124 PetriNetUnfolderBase]: 15/122 cut-off events. [2023-11-21 22:12:02,340 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-21 22:12:02,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 122 events. 15/122 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 351 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2023-11-21 22:12:02,346 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 125 transitions, 271 flow [2023-11-21 22:12:02,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 121 transitions, 260 flow [2023-11-21 22:12:02,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:12:02,387 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;@71abd478, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:12:02,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-11-21 22:12:02,396 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:12:02,396 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-21 22:12:02,396 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:12:02,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:02,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-21 22:12:02,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-21 22:12:02,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:02,420 INFO L85 PathProgramCache]: Analyzing trace with hash 770987, now seen corresponding path program 1 times [2023-11-21 22:12:02,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:12:02,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072186130] [2023-11-21 22:12:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:02,434 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 [2023-11-21 22:12:02,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:12:02,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:12:02,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:12:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:02,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:12:02,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:02,646 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 22:12:02,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:12:02,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:12:02,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:12:02,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:12:02,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,717 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:12:02,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,728 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:12:02,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:12:02,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:12:02,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:12:02,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:12:02,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,785 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:12:02,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:12:02,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-21 22:12:02,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:12:02,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:12:02,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:12:02,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:12:02,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,911 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:12:02,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:12:02,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,927 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:12:02,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:12:02,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:12:02,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:02,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:12:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:02,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:02,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:12:02,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072186130] [2023-11-21 22:12:02,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072186130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:02,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:02,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:12:02,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220784365] [2023-11-21 22:12:02,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:02,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:12:02,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:12:03,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:12:03,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:12:03,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 125 [2023-11-21 22:12:03,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 121 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:03,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:03,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 125 [2023-11-21 22:12:03,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:03,643 INFO L124 PetriNetUnfolderBase]: 703/1397 cut-off events. [2023-11-21 22:12:03,643 INFO L125 PetriNetUnfolderBase]: For 84/85 co-relation queries the response was YES. [2023-11-21 22:12:03,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2352 conditions, 1397 events. 703/1397 cut-off events. For 84/85 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7971 event pairs, 266 based on Foata normal form. 1/831 useless extension candidates. Maximal degree in co-relation 2020. Up to 879 conditions per place. [2023-11-21 22:12:03,669 INFO L140 encePairwiseOnDemand]: 119/125 looper letters, 39 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2023-11-21 22:12:03,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 116 transitions, 332 flow [2023-11-21 22:12:03,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:03,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:03,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-11-21 22:12:03,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.752 [2023-11-21 22:12:03,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-11-21 22:12:03,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-11-21 22:12:03,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:03,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-11-21 22:12:03,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:03,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:03,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:03,704 INFO L175 Difference]: Start difference. First operand has 116 places, 121 transitions, 260 flow. Second operand 3 states and 282 transitions. [2023-11-21 22:12:03,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 116 transitions, 332 flow [2023-11-21 22:12:03,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 116 transitions, 320 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-21 22:12:03,716 INFO L231 Difference]: Finished difference. Result has 107 places, 116 transitions, 242 flow [2023-11-21 22:12:03,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=107, PETRI_TRANSITIONS=116} [2023-11-21 22:12:03,723 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, -9 predicate places. [2023-11-21 22:12:03,723 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 116 transitions, 242 flow [2023-11-21 22:12:03,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:03,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:03,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-21 22:12:03,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:12:03,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:12:03,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-21 22:12:03,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:03,932 INFO L85 PathProgramCache]: Analyzing trace with hash 770988, now seen corresponding path program 1 times [2023-11-21 22:12:03,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:12:03,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256493490] [2023-11-21 22:12:03,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:03,933 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 [2023-11-21 22:12:03,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:12:03,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:12:03,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:12:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:04,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:12:04,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:04,044 INFO L378 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 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-21 22:12:04,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:04,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:12:04,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-21 22:12:04,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:12:04,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:04,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,174 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:12:04,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:04,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:12:04,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:04,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,243 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:12:04,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:04,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:04,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,278 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:12:04,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,287 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:12:04,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:04,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:12:04,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:04,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:04,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,362 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:12:04,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,372 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:12:04,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:04,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:04,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:04,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:12:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:04,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:04,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:12:04,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256493490] [2023-11-21 22:12:04,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256493490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:04,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:04,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:12:04,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208502316] [2023-11-21 22:12:04,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:04,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:12:04,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:12:04,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:12:04,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:12:05,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 125 [2023-11-21 22:12:05,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 116 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:05,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:05,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 125 [2023-11-21 22:12:05,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:05,617 INFO L124 PetriNetUnfolderBase]: 706/1406 cut-off events. [2023-11-21 22:12:05,617 INFO L125 PetriNetUnfolderBase]: For 21/22 co-relation queries the response was YES. [2023-11-21 22:12:05,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2332 conditions, 1406 events. 706/1406 cut-off events. For 21/22 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8024 event pairs, 266 based on Foata normal form. 0/835 useless extension candidates. Maximal degree in co-relation 2282. Up to 892 conditions per place. [2023-11-21 22:12:05,637 INFO L140 encePairwiseOnDemand]: 112/125 looper letters, 43 selfloop transitions, 10 changer transitions 0/125 dead transitions. [2023-11-21 22:12:05,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 125 transitions, 368 flow [2023-11-21 22:12:05,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:12:05,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:12:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2023-11-21 22:12:05,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.744 [2023-11-21 22:12:05,645 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2023-11-21 22:12:05,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2023-11-21 22:12:05,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:05,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2023-11-21 22:12:05,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:05,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:05,654 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:05,654 INFO L175 Difference]: Start difference. First operand has 107 places, 116 transitions, 242 flow. Second operand 4 states and 372 transitions. [2023-11-21 22:12:05,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 125 transitions, 368 flow [2023-11-21 22:12:05,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 125 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:12:05,661 INFO L231 Difference]: Finished difference. Result has 111 places, 125 transitions, 320 flow [2023-11-21 22:12:05,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=111, PETRI_TRANSITIONS=125} [2023-11-21 22:12:05,663 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, -5 predicate places. [2023-11-21 22:12:05,663 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 125 transitions, 320 flow [2023-11-21 22:12:05,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:05,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:05,664 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-21 22:12:05,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:05,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:12:05,867 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-21 22:12:05,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:05,867 INFO L85 PathProgramCache]: Analyzing trace with hash 740945681, now seen corresponding path program 1 times [2023-11-21 22:12:05,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:12:05,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173877457] [2023-11-21 22:12:05,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:05,868 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 [2023-11-21 22:12:05,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:12:05,870 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:12:05,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:12:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:05,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 22:12:05,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:05,990 INFO L378 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 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-21 22:12:06,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:12:06,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:06,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,049 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:12:06,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,063 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:12:06,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:06,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,093 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:12:06,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:06,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:06,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:12:06,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:06,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,168 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:12:06,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:06,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:12:06,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:12:06,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-21 22:12:06,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:06,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:12:06,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:06,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,359 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:12:06,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:06,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,383 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:12:06,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:06,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:06,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:12:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:06,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:06,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:06,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:12:06,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173877457] [2023-11-21 22:12:06,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173877457] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:06,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:06,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-21 22:12:06,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996664310] [2023-11-21 22:12:06,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:06,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:12:06,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:12:06,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:12:06,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:12:09,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 125 [2023-11-21 22:12:09,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 125 transitions, 320 flow. Second operand has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:09,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:09,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 125 [2023-11-21 22:12:09,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:11,565 INFO L124 PetriNetUnfolderBase]: 715/1433 cut-off events. [2023-11-21 22:12:11,565 INFO L125 PetriNetUnfolderBase]: For 29/30 co-relation queries the response was YES. [2023-11-21 22:12:11,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2450 conditions, 1433 events. 715/1433 cut-off events. For 29/30 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8210 event pairs, 266 based on Foata normal form. 0/862 useless extension candidates. Maximal degree in co-relation 2296. Up to 895 conditions per place. [2023-11-21 22:12:11,584 INFO L140 encePairwiseOnDemand]: 112/125 looper letters, 43 selfloop transitions, 37 changer transitions 0/152 dead transitions. [2023-11-21 22:12:11,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 152 transitions, 600 flow [2023-11-21 22:12:11,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:12:11,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 22:12:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 879 transitions. [2023-11-21 22:12:11,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7032 [2023-11-21 22:12:11,589 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 879 transitions. [2023-11-21 22:12:11,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 879 transitions. [2023-11-21 22:12:11,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:11,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 879 transitions. [2023-11-21 22:12:11,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.9) internal successors, (879), 10 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:11,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:11,598 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:11,598 INFO L175 Difference]: Start difference. First operand has 111 places, 125 transitions, 320 flow. Second operand 10 states and 879 transitions. [2023-11-21 22:12:11,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 152 transitions, 600 flow [2023-11-21 22:12:11,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 152 transitions, 600 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:12:11,604 INFO L231 Difference]: Finished difference. Result has 123 places, 152 transitions, 564 flow [2023-11-21 22:12:11,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=564, PETRI_PLACES=123, PETRI_TRANSITIONS=152} [2023-11-21 22:12:11,605 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 7 predicate places. [2023-11-21 22:12:11,605 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 152 transitions, 564 flow [2023-11-21 22:12:11,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:11,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:11,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:12:11,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:11,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:12:11,809 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-21 22:12:11,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:11,809 INFO L85 PathProgramCache]: Analyzing trace with hash 740979200, now seen corresponding path program 1 times [2023-11-21 22:12:11,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:12:11,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070764605] [2023-11-21 22:12:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:11,810 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 [2023-11-21 22:12:11,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:12:11,811 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:12:11,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:12:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:11,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:12:11,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:11,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:11,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:11,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-11-21 22:12:11,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,023 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-21 22:12:12,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-21 22:12:12,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,072 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-21 22:12:12,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-21 22:12:12,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 1 [2023-11-21 22:12:12,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,164 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-21 22:12:12,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 1 [2023-11-21 22:12:12,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,212 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-21 22:12:12,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-21 22:12:12,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-21 22:12:12,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:12,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2023-11-21 22:12:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:12,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:12,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:12:12,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070764605] [2023-11-21 22:12:12,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070764605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:12,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:12,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:12:12,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869251886] [2023-11-21 22:12:12,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:12,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:12:12,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:12:12,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:12:12,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:12:12,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 125 [2023-11-21 22:12:12,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 152 transitions, 564 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:12,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:12,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 125 [2023-11-21 22:12:12,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:13,282 INFO L124 PetriNetUnfolderBase]: 715/1396 cut-off events. [2023-11-21 22:12:13,282 INFO L125 PetriNetUnfolderBase]: For 61/62 co-relation queries the response was YES. [2023-11-21 22:12:13,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2476 conditions, 1396 events. 715/1396 cut-off events. For 61/62 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7680 event pairs, 266 based on Foata normal form. 65/933 useless extension candidates. Maximal degree in co-relation 2387. Up to 923 conditions per place. [2023-11-21 22:12:13,322 INFO L140 encePairwiseOnDemand]: 122/125 looper letters, 76 selfloop transitions, 1 changer transitions 0/150 dead transitions. [2023-11-21 22:12:13,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 150 transitions, 714 flow [2023-11-21 22:12:13,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:13,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:13,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-11-21 22:12:13,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7546666666666667 [2023-11-21 22:12:13,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-11-21 22:12:13,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-11-21 22:12:13,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:13,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-11-21 22:12:13,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:13,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:13,330 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:13,330 INFO L175 Difference]: Start difference. First operand has 123 places, 152 transitions, 564 flow. Second operand 3 states and 283 transitions. [2023-11-21 22:12:13,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 150 transitions, 714 flow [2023-11-21 22:12:13,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 150 transitions, 619 flow, removed 25 selfloop flow, removed 4 redundant places. [2023-11-21 22:12:13,340 INFO L231 Difference]: Finished difference. Result has 119 places, 150 transitions, 467 flow [2023-11-21 22:12:13,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=467, PETRI_PLACES=119, PETRI_TRANSITIONS=150} [2023-11-21 22:12:13,341 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 3 predicate places. [2023-11-21 22:12:13,341 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 150 transitions, 467 flow [2023-11-21 22:12:13,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:13,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:13,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:12:13,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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)] Ended with exit code 0 [2023-11-21 22:12:13,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:12:13,544 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-21 22:12:13,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:13,545 INFO L85 PathProgramCache]: Analyzing trace with hash 740979201, now seen corresponding path program 1 times [2023-11-21 22:12:13,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:12:13,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087761859] [2023-11-21 22:12:13,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:13,546 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 [2023-11-21 22:12:13,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:12:13,547 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:12:13,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:12:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:13,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:12:13,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:13,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-21 22:12:13,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,739 INFO L378 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 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-21 22:12:13,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:12:13,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-21 22:12:13,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,854 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 22:12:13,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:12:13,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:12:13,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 22:12:13,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:13,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 22:12:14,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:14,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:14,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:12:14,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087761859] [2023-11-21 22:12:14,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087761859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:14,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:14,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:12:14,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704364043] [2023-11-21 22:12:14,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:14,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:12:14,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:12:14,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:12:14,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:12:14,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 125 [2023-11-21 22:12:14,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 150 transitions, 467 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:14,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:14,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 125 [2023-11-21 22:12:14,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:14,825 INFO L124 PetriNetUnfolderBase]: 715/1359 cut-off events. [2023-11-21 22:12:14,825 INFO L125 PetriNetUnfolderBase]: For 41/42 co-relation queries the response was YES. [2023-11-21 22:12:14,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2394 conditions, 1359 events. 715/1359 cut-off events. For 41/42 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7225 event pairs, 266 based on Foata normal form. 65/931 useless extension candidates. Maximal degree in co-relation 2381. Up to 923 conditions per place. [2023-11-21 22:12:14,838 INFO L140 encePairwiseOnDemand]: 122/125 looper letters, 76 selfloop transitions, 1 changer transitions 0/148 dead transitions. [2023-11-21 22:12:14,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 148 transitions, 617 flow [2023-11-21 22:12:14,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:14,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:14,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-11-21 22:12:14,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7546666666666667 [2023-11-21 22:12:14,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-11-21 22:12:14,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-11-21 22:12:14,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:14,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-11-21 22:12:14,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:14,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:14,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:14,846 INFO L175 Difference]: Start difference. First operand has 119 places, 150 transitions, 467 flow. Second operand 3 states and 283 transitions. [2023-11-21 22:12:14,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 148 transitions, 617 flow [2023-11-21 22:12:14,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 148 transitions, 616 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:12:14,852 INFO L231 Difference]: Finished difference. Result has 118 places, 148 transitions, 464 flow [2023-11-21 22:12:14,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=118, PETRI_TRANSITIONS=148} [2023-11-21 22:12:14,853 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 2 predicate places. [2023-11-21 22:12:14,853 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 148 transitions, 464 flow [2023-11-21 22:12:14,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:14,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:14,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:14,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:12:15,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:12:15,056 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-21 22:12:15,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:15,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1619714240, now seen corresponding path program 1 times [2023-11-21 22:12:15,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:12:15,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482675255] [2023-11-21 22:12:15,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:15,058 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 [2023-11-21 22:12:15,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:12:15,059 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:12:15,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:12:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:15,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:12:15,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:15,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:15,235 INFO L378 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 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-21 22:12:15,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:15,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:15,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:15,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:15,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:12:15,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:15,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:15,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:12:15,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:15,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:15,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:15,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:12:15,363 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 22:12:15,369 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 22:12:15,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:15,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:15,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:15,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-21 22:12:15,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:15,454 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 22:12:15,472 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 22:12:15,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:15,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 22:12:15,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:15,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 22:12:15,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:15,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:15,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:12:15,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482675255] [2023-11-21 22:12:15,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482675255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:15,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:15,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:12:15,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221628169] [2023-11-21 22:12:15,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:15,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:12:15,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:12:15,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:12:15,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:12:16,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 125 [2023-11-21 22:12:16,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 148 transitions, 464 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:16,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:16,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 125 [2023-11-21 22:12:16,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:16,361 INFO L124 PetriNetUnfolderBase]: 715/1345 cut-off events. [2023-11-21 22:12:16,361 INFO L125 PetriNetUnfolderBase]: For 41/42 co-relation queries the response was YES. [2023-11-21 22:12:16,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2381 conditions, 1345 events. 715/1345 cut-off events. For 41/42 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7051 event pairs, 266 based on Foata normal form. 16/882 useless extension candidates. Maximal degree in co-relation 2367. Up to 923 conditions per place. [2023-11-21 22:12:16,383 INFO L140 encePairwiseOnDemand]: 122/125 looper letters, 76 selfloop transitions, 1 changer transitions 0/146 dead transitions. [2023-11-21 22:12:16,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 146 transitions, 614 flow [2023-11-21 22:12:16,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:16,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-11-21 22:12:16,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7546666666666667 [2023-11-21 22:12:16,386 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-11-21 22:12:16,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-11-21 22:12:16,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:16,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-11-21 22:12:16,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:16,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:16,390 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:16,390 INFO L175 Difference]: Start difference. First operand has 118 places, 148 transitions, 464 flow. Second operand 3 states and 283 transitions. [2023-11-21 22:12:16,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 146 transitions, 614 flow [2023-11-21 22:12:16,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 146 transitions, 613 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:12:16,395 INFO L231 Difference]: Finished difference. Result has 117 places, 146 transitions, 461 flow [2023-11-21 22:12:16,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=461, PETRI_PLACES=117, PETRI_TRANSITIONS=146} [2023-11-21 22:12:16,400 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 1 predicate places. [2023-11-21 22:12:16,400 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 146 transitions, 461 flow [2023-11-21 22:12:16,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:16,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:16,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:16,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:12:16,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:12:16,611 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-21 22:12:16,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:16,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1619714241, now seen corresponding path program 1 times [2023-11-21 22:12:16,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:12:16,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655527844] [2023-11-21 22:12:16,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:16,612 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 [2023-11-21 22:12:16,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:12:16,613 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:12:16,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:12:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:16,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 22:12:16,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:16,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:16,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:16,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-11-21 22:12:16,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:16,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:16,824 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-21 22:12:16,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-21 22:12:16,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:16,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:16,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:16,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:16,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-11-21 22:12:16,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:16,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:16,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:16,923 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-21 22:12:16,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-21 22:12:16,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:16,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:16,968 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-21 22:12:16,968 INFO L378 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 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-21 22:12:16,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:16,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:16,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:16,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-21 22:12:17,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:17,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:17,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:17,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-21 22:12:17,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:17,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:17,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:17,056 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-21 22:12:17,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-21 22:12:17,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:17,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-21 22:12:17,137 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-21 22:12:17,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-21 22:12:17,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:17,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:17,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:12:17,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655527844] [2023-11-21 22:12:17,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655527844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:17,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:17,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:12:17,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063887428] [2023-11-21 22:12:17,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:17,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:12:17,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:12:17,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:12:17,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:12:17,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 125 [2023-11-21 22:12:17,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 146 transitions, 461 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:17,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:17,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 125 [2023-11-21 22:12:17,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:17,812 INFO L124 PetriNetUnfolderBase]: 715/1331 cut-off events. [2023-11-21 22:12:17,812 INFO L125 PetriNetUnfolderBase]: For 41/42 co-relation queries the response was YES. [2023-11-21 22:12:17,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 1331 events. 715/1331 cut-off events. For 41/42 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6887 event pairs, 266 based on Foata normal form. 16/882 useless extension candidates. Maximal degree in co-relation 2353. Up to 923 conditions per place. [2023-11-21 22:12:17,825 INFO L140 encePairwiseOnDemand]: 122/125 looper letters, 76 selfloop transitions, 1 changer transitions 0/144 dead transitions. [2023-11-21 22:12:17,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 144 transitions, 611 flow [2023-11-21 22:12:17,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:17,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-11-21 22:12:17,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7546666666666667 [2023-11-21 22:12:17,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-11-21 22:12:17,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-11-21 22:12:17,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:17,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-11-21 22:12:17,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:17,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:17,830 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:17,830 INFO L175 Difference]: Start difference. First operand has 117 places, 146 transitions, 461 flow. Second operand 3 states and 283 transitions. [2023-11-21 22:12:17,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 144 transitions, 611 flow [2023-11-21 22:12:17,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 144 transitions, 610 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:12:17,835 INFO L231 Difference]: Finished difference. Result has 116 places, 144 transitions, 458 flow [2023-11-21 22:12:17,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=116, PETRI_TRANSITIONS=144} [2023-11-21 22:12:17,836 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 0 predicate places. [2023-11-21 22:12:17,837 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 144 transitions, 458 flow [2023-11-21 22:12:17,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:17,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:17,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:17,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:18,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:12:18,040 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-21 22:12:18,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:18,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1328523035, now seen corresponding path program 1 times [2023-11-21 22:12:18,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:12:18,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986298839] [2023-11-21 22:12:18,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:18,041 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 [2023-11-21 22:12:18,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:12:18,042 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:12:18,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:12:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:18,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:12:18,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:18,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:18,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:12:18,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986298839] [2023-11-21 22:12:18,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986298839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:18,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:18,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:12:18,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805484622] [2023-11-21 22:12:18,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:18,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:12:18,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:12:18,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:12:18,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:12:18,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 125 [2023-11-21 22:12:18,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 144 transitions, 458 flow. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:18,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:18,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 125 [2023-11-21 22:12:18,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:18,997 INFO L124 PetriNetUnfolderBase]: 1257/2426 cut-off events. [2023-11-21 22:12:18,997 INFO L125 PetriNetUnfolderBase]: For 75/77 co-relation queries the response was YES. [2023-11-21 22:12:19,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4281 conditions, 2426 events. 1257/2426 cut-off events. For 75/77 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 14987 event pairs, 538 based on Foata normal form. 0/1579 useless extension candidates. Maximal degree in co-relation 4265. Up to 1073 conditions per place. [2023-11-21 22:12:19,019 INFO L140 encePairwiseOnDemand]: 121/125 looper letters, 134 selfloop transitions, 3 changer transitions 0/203 dead transitions. [2023-11-21 22:12:19,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 203 transitions, 943 flow [2023-11-21 22:12:19,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:12:19,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:12:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 405 transitions. [2023-11-21 22:12:19,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.81 [2023-11-21 22:12:19,023 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 405 transitions. [2023-11-21 22:12:19,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 405 transitions. [2023-11-21 22:12:19,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:19,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 405 transitions. [2023-11-21 22:12:19,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:19,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:19,027 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:19,027 INFO L175 Difference]: Start difference. First operand has 116 places, 144 transitions, 458 flow. Second operand 4 states and 405 transitions. [2023-11-21 22:12:19,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 203 transitions, 943 flow [2023-11-21 22:12:19,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 203 transitions, 942 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:12:19,033 INFO L231 Difference]: Finished difference. Result has 119 places, 144 transitions, 466 flow [2023-11-21 22:12:19,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=466, PETRI_PLACES=119, PETRI_TRANSITIONS=144} [2023-11-21 22:12:19,035 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 3 predicate places. [2023-11-21 22:12:19,035 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 144 transitions, 466 flow [2023-11-21 22:12:19,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:19,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:19,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:19,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:12:19,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:12:19,238 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-21 22:12:19,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:19,239 INFO L85 PathProgramCache]: Analyzing trace with hash -141102400, now seen corresponding path program 1 times [2023-11-21 22:12:19,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:12:19,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94204644] [2023-11-21 22:12:19,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:19,239 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 [2023-11-21 22:12:19,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:12:19,240 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:12:19,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:12:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:19,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:12:19,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:19,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:12:19,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:19,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:12:19,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94204644] [2023-11-21 22:12:19,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94204644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:19,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:19,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:12:19,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156507532] [2023-11-21 22:12:19,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:19,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:12:19,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:12:19,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:12:19,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:12:19,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 125 [2023-11-21 22:12:19,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 144 transitions, 466 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:19,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:19,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 125 [2023-11-21 22:12:19,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:20,578 INFO L124 PetriNetUnfolderBase]: 2644/5197 cut-off events. [2023-11-21 22:12:20,579 INFO L125 PetriNetUnfolderBase]: For 215/219 co-relation queries the response was YES. [2023-11-21 22:12:20,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9073 conditions, 5197 events. 2644/5197 cut-off events. For 215/219 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 37843 event pairs, 873 based on Foata normal form. 38/3525 useless extension candidates. Maximal degree in co-relation 9055. Up to 1396 conditions per place. [2023-11-21 22:12:20,622 INFO L140 encePairwiseOnDemand]: 119/125 looper letters, 144 selfloop transitions, 9 changer transitions 0/219 dead transitions. [2023-11-21 22:12:20,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 219 transitions, 977 flow [2023-11-21 22:12:20,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:12:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:12:20,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 514 transitions. [2023-11-21 22:12:20,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8224 [2023-11-21 22:12:20,625 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 514 transitions. [2023-11-21 22:12:20,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 514 transitions. [2023-11-21 22:12:20,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:20,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 514 transitions. [2023-11-21 22:12:20,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:20,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:20,630 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:20,630 INFO L175 Difference]: Start difference. First operand has 119 places, 144 transitions, 466 flow. Second operand 5 states and 514 transitions. [2023-11-21 22:12:20,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 219 transitions, 977 flow [2023-11-21 22:12:20,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 219 transitions, 973 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-21 22:12:20,638 INFO L231 Difference]: Finished difference. Result has 124 places, 145 transitions, 495 flow [2023-11-21 22:12:20,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=495, PETRI_PLACES=124, PETRI_TRANSITIONS=145} [2023-11-21 22:12:20,639 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 8 predicate places. [2023-11-21 22:12:20,640 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 145 transitions, 495 flow [2023-11-21 22:12:20,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:20,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:20,640 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2023-11-21 22:12:20,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:20,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:12:20,844 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-21 22:12:20,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:20,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1032711744, now seen corresponding path program 2 times [2023-11-21 22:12:20,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:12:20,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956163300] [2023-11-21 22:12:20,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:12:20,845 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 [2023-11-21 22:12:20,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:12:20,846 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:12:20,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc3be7c-54e6-4ac4-8abf-6dd6dc64efe8/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:12:20,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:12:20,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:12:20,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:12:20,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:20,998 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-21 22:12:21,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:21,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:21,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:12:21,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,050 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:12:21,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:21,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:12:21,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-21 22:12:21,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:21,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:12:21,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:21,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:12:21,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,259 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:12:21,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:21,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,280 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:12:21,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:21,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:21,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:12:21,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,336 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:12:21,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:21,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:21,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:12:21,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,391 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:12:21,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:12:21,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:12:21,687 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:21,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:22,476 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:22,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:12:22,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956163300] [2023-11-21 22:12:22,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956163300] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:22,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:22,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-21 22:12:22,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427046975] [2023-11-21 22:12:22,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:22,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-21 22:12:22,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:12:22,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-21 22:12:22,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:12:29,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 125 [2023-11-21 22:12:29,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 145 transitions, 495 flow. Second operand has 14 states, 14 states have (on average 80.57142857142857) internal successors, (1128), 14 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:29,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:29,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 125 [2023-11-21 22:12:29,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:33,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:12:35,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:12:37,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:12:40,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:12:42,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:12:44,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:12:46,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []