./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 20:12:20,583 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 20:12:20,647 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2023-12-02 20:12:20,653 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 20:12:20,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 20:12:20,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 20:12:20,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 20:12:20,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 20:12:20,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 20:12:20,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 20:12:20,683 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 20:12:20,683 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 20:12:20,684 INFO L153 SettingsManager]: * Use SBE=true [2023-12-02 20:12:20,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 20:12:20,685 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 20:12:20,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 20:12:20,686 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 20:12:20,686 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 20:12:20,687 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 20:12:20,688 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 20:12:20,688 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 20:12:20,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 20:12:20,693 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 20:12:20,693 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 20:12:20,694 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 20:12:20,694 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 20:12:20,695 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 20:12:20,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 20:12:20,695 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 20:12:20,696 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 20:12:20,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:12:20,697 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 20:12:20,697 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 20:12:20,697 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-02 20:12:20,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 20:12:20,697 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 20:12:20,698 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-12-02 20:12:20,698 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-12-02 20:12:20,698 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-12-02 20:12:20,698 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-12-02 20:12:20,699 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 [2023-12-02 20:12:20,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 20:12:20,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 20:12:20,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 20:12:20,945 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 20:12:20,946 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 20:12:20,947 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2023-12-02 20:12:23,674 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 20:12:23,870 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 20:12:23,871 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2023-12-02 20:12:23,878 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/data/fbf526a22/8afae2d6cac74a6d8e7c58a0c6b7f91e/FLAG28beac88f [2023-12-02 20:12:23,890 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/data/fbf526a22/8afae2d6cac74a6d8e7c58a0c6b7f91e [2023-12-02 20:12:23,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 20:12:23,894 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 20:12:23,895 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 20:12:23,896 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 20:12:23,900 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 20:12:23,900 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:12:23" (1/1) ... [2023-12-02 20:12:23,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c1c826a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:23, skipping insertion in model container [2023-12-02 20:12:23,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:12:23" (1/1) ... [2023-12-02 20:12:23,927 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 20:12:24,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:12:24,092 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) [2023-12-02 20:12:24,092 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5a93bf84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:24, skipping insertion in model container [2023-12-02 20:12:24,092 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 20:12:24,093 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 20:12:24,094 INFO L158 Benchmark]: Toolchain (without parser) took 199.52ms. Allocated memory is still 153.1MB. Free memory was 121.8MB in the beginning and 111.4MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 20:12:24,095 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory was 64.7MB in the beginning and 64.6MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 20:12:24,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.29ms. Allocated memory is still 153.1MB. Free memory was 121.2MB in the beginning and 112.0MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 20:12:24,098 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory was 64.7MB in the beginning and 64.6MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.29ms. Allocated memory is still 153.1MB. Free memory was 121.2MB in the beginning and 112.0MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 109]: 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_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 20:12:25,837 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 20:12:25,915 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Bitvector.epf [2023-12-02 20:12:25,921 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 20:12:25,922 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 20:12:25,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 20:12:25,950 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 20:12:25,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 20:12:25,952 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 20:12:25,952 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 20:12:25,953 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 20:12:25,954 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 20:12:25,954 INFO L153 SettingsManager]: * Use SBE=true [2023-12-02 20:12:25,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 20:12:25,955 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 20:12:25,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 20:12:25,956 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 20:12:25,957 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 20:12:25,957 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 20:12:25,958 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 20:12:25,958 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 20:12:25,959 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 20:12:25,960 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 20:12:25,960 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 20:12:25,960 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 20:12:25,961 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 20:12:25,961 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 20:12:25,962 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 20:12:25,962 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 20:12:25,963 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 20:12:25,963 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 20:12:25,963 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 20:12:25,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:12:25,964 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 20:12:25,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 20:12:25,964 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-02 20:12:25,965 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 20:12:25,965 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 20:12:25,965 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-12-02 20:12:25,965 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-12-02 20:12:25,965 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-12-02 20:12:25,966 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-12-02 20:12:25,966 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 20:12:25,966 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 [2023-12-02 20:12:26,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 20:12:26,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 20:12:26,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 20:12:26,284 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 20:12:26,284 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 20:12:26,285 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2023-12-02 20:12:29,049 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 20:12:29,250 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 20:12:29,250 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2023-12-02 20:12:29,258 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/data/fd3a00519/28f97819020245fe9aa5184155b6ee2b/FLAG587a57f60 [2023-12-02 20:12:29,270 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/data/fd3a00519/28f97819020245fe9aa5184155b6ee2b [2023-12-02 20:12:29,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 20:12:29,273 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 20:12:29,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 20:12:29,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 20:12:29,279 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 20:12:29,280 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:12:29" (1/1) ... [2023-12-02 20:12:29,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c484c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:29, skipping insertion in model container [2023-12-02 20:12:29,281 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:12:29" (1/1) ... [2023-12-02 20:12:29,308 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 20:12:29,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:12:29,516 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 20:12:29,522 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 20:12:29,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:12:29,544 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 20:12:29,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:12:29,582 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 20:12:29,582 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 20:12:29,590 INFO L206 MainTranslator]: Completed translation [2023-12-02 20:12:29,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:29 WrapperNode [2023-12-02 20:12:29,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 20:12:29,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 20:12:29,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 20:12:29,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 20:12:29,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:29" (1/1) ... [2023-12-02 20:12:29,611 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:29" (1/1) ... [2023-12-02 20:12:29,635 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 103 [2023-12-02 20:12:29,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 20:12:29,636 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 20:12:29,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 20:12:29,637 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 20:12:29,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:29" (1/1) ... [2023-12-02 20:12:29,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:29" (1/1) ... [2023-12-02 20:12:29,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:29" (1/1) ... [2023-12-02 20:12:29,651 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:29" (1/1) ... [2023-12-02 20:12:29,662 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:29" (1/1) ... [2023-12-02 20:12:29,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:29" (1/1) ... [2023-12-02 20:12:29,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:29" (1/1) ... [2023-12-02 20:12:29,670 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:29" (1/1) ... [2023-12-02 20:12:29,674 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 20:12:29,675 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 20:12:29,675 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 20:12:29,676 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 20:12:29,676 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:29" (1/1) ... [2023-12-02 20:12:29,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:12:29,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:12:29,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 20:12:29,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 20:12:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 20:12:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 20:12:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 20:12:29,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 20:12:29,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 20:12:29,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 20:12:29,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 20:12:29,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 20:12:29,744 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-02 20:12:29,744 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-02 20:12:29,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 20:12:29,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 20:12:29,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 20:12:29,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 20:12:29,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 20:12:29,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 20:12:29,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 20:12:29,747 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 20:12:29,861 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 20:12:29,863 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 20:12:30,367 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 20:12:30,599 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 20:12:30,599 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 20:12:30,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:12:30 BoogieIcfgContainer [2023-12-02 20:12:30,600 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 20:12:30,603 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 20:12:30,603 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 20:12:30,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 20:12:30,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:12:29" (1/3) ... [2023-12-02 20:12:30,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f56215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:12:30, skipping insertion in model container [2023-12-02 20:12:30,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:12:29" (2/3) ... [2023-12-02 20:12:30,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f56215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:12:30, skipping insertion in model container [2023-12-02 20:12:30,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:12:30" (3/3) ... [2023-12-02 20:12:30,609 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2023-12-02 20:12:30,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 20:12:30,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-12-02 20:12:30,628 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 20:12:30,690 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-12-02 20:12:30,722 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:12:30,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-12-02 20:12:30,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:12:30,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-12-02 20:12:30,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-12-02 20:12:30,765 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-12-02 20:12:30,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thread2Thread1of1ForFork2 ======== [2023-12-02 20:12:30,779 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=PARTIAL_ORDER_FA, 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;@553cb723, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:12:30,779 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-02 20:12:30,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-12-02 20:12:30,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:12:30,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1707154380, now seen corresponding path program 1 times [2023-12-02 20:12:31,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:12:31,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301941745] [2023-12-02 20:12:31,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:12:31,011 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 [2023-12-02 20:12:31,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:12:31,033 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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) [2023-12-02 20:12:31,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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 [2023-12-02 20:12:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:12:31,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 20:12:31,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:12:31,213 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 [2023-12-02 20:12:31,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,234 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 [2023-12-02 20:12:31,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,247 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 [2023-12-02 20:12:31,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,263 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 [2023-12-02 20:12:31,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,273 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 [2023-12-02 20:12:31,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,279 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 [2023-12-02 20:12:31,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,297 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 [2023-12-02 20:12:31,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,313 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 [2023-12-02 20:12:31,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,343 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 [2023-12-02 20:12:31,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,360 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 [2023-12-02 20:12:31,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,373 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 [2023-12-02 20:12:31,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,389 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 [2023-12-02 20:12:31,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,403 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 [2023-12-02 20:12:31,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,419 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 [2023-12-02 20:12:31,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,426 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 [2023-12-02 20:12:31,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,434 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 [2023-12-02 20:12:31,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,441 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 [2023-12-02 20:12:31,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,450 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 [2023-12-02 20:12:31,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,469 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 [2023-12-02 20:12:31,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,479 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 [2023-12-02 20:12:31,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,488 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 [2023-12-02 20:12:31,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,493 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 [2023-12-02 20:12:31,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,499 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 [2023-12-02 20:12:31,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:31,507 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 [2023-12-02 20:12:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:12:31,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:12:31,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:12:31,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301941745] [2023-12-02 20:12:31,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301941745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:12:31,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:12:31,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 20:12:31,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597311085] [2023-12-02 20:12:31,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:12:31,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 20:12:31,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:12:31,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 20:12:31,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 20:12:31,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:12:31,578 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:12:31,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:12:31,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:12:31,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:31,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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 [2023-12-02 20:12:31,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:12:31,956 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-12-02 20:12:31,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:12:31,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1707154379, now seen corresponding path program 1 times [2023-12-02 20:12:31,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:12:31,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851770459] [2023-12-02 20:12:31,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:12:31,958 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 [2023-12-02 20:12:31,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:12:31,959 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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) [2023-12-02 20:12:31,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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 [2023-12-02 20:12:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:12:32,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 20:12:32,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:12:32,085 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 [2023-12-02 20:12:32,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,100 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 [2023-12-02 20:12:32,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,123 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 [2023-12-02 20:12:32,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,135 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 [2023-12-02 20:12:32,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,148 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 [2023-12-02 20:12:32,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,156 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 [2023-12-02 20:12:32,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,195 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 [2023-12-02 20:12:32,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,218 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 [2023-12-02 20:12:32,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,240 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 [2023-12-02 20:12:32,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,250 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 [2023-12-02 20:12:32,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,264 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 [2023-12-02 20:12:32,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,282 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 [2023-12-02 20:12:32,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,292 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 [2023-12-02 20:12:32,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,302 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 [2023-12-02 20:12:32,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,322 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 [2023-12-02 20:12:32,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,333 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 [2023-12-02 20:12:32,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,344 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 [2023-12-02 20:12:32,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,351 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 [2023-12-02 20:12:32,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,365 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 [2023-12-02 20:12:32,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,382 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 [2023-12-02 20:12:32,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,394 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 [2023-12-02 20:12:32,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,401 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 [2023-12-02 20:12:32,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,412 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 [2023-12-02 20:12:32,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:32,419 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 [2023-12-02 20:12:32,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:12:32,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:12:32,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:12:32,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851770459] [2023-12-02 20:12:32,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851770459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:12:32,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:12:32,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 20:12:32,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053821199] [2023-12-02 20:12:32,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:12:32,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:12:32,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:12:32,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:12:32,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:12:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:12:32,648 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:12:32,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:12:32,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:32,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:12:32,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:32,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:12:32,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 20:12:33,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:12:33,118 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-12-02 20:12:33,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:12:33,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1127734432, now seen corresponding path program 1 times [2023-12-02 20:12:33,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:12:33,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630890433] [2023-12-02 20:12:33,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:12:33,120 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 [2023-12-02 20:12:33,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:12:33,121 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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) [2023-12-02 20:12:33,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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 [2023-12-02 20:12:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:12:33,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 20:12:33,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:12:33,244 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 [2023-12-02 20:12:33,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,260 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 [2023-12-02 20:12:33,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,271 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 [2023-12-02 20:12:33,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,278 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 [2023-12-02 20:12:33,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,290 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 [2023-12-02 20:12:33,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,297 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 [2023-12-02 20:12:33,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,312 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 [2023-12-02 20:12:33,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,319 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 [2023-12-02 20:12:33,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,332 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 [2023-12-02 20:12:33,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,339 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 [2023-12-02 20:12:33,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,351 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 [2023-12-02 20:12:33,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,372 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 [2023-12-02 20:12:33,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,397 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 [2023-12-02 20:12:33,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,408 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 [2023-12-02 20:12:33,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,444 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 [2023-12-02 20:12:33,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,474 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 [2023-12-02 20:12:33,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,487 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 [2023-12-02 20:12:33,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,506 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 [2023-12-02 20:12:33,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,519 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 [2023-12-02 20:12:33,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,525 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 [2023-12-02 20:12:33,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,537 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 [2023-12-02 20:12:33,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,556 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 [2023-12-02 20:12:33,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,567 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 [2023-12-02 20:12:33,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:33,573 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 [2023-12-02 20:12:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:12:33,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:12:33,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:12:33,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630890433] [2023-12-02 20:12:33,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630890433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:12:33,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:12:33,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 20:12:33,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872332077] [2023-12-02 20:12:33,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:12:33,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:12:33,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:12:33,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:12:33,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:12:33,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:12:33,789 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:12:33,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:12:33,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:33,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:12:33,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:12:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:12:33,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:33,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-02 20:12:34,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:12:34,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-12-02 20:12:34,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:12:34,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1171401504, now seen corresponding path program 1 times [2023-12-02 20:12:34,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:12:34,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979184165] [2023-12-02 20:12:34,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:12:34,176 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 [2023-12-02 20:12:34,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:12:34,177 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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) [2023-12-02 20:12:34,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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 [2023-12-02 20:12:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:12:34,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 20:12:34,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:12:34,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-12-02 20:12:34,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,306 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 [2023-12-02 20:12:34,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,327 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 [2023-12-02 20:12:34,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,343 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 [2023-12-02 20:12:34,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,355 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 [2023-12-02 20:12:34,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,371 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 [2023-12-02 20:12:34,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,383 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 [2023-12-02 20:12:34,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,401 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 [2023-12-02 20:12:34,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,408 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 [2023-12-02 20:12:34,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,416 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 [2023-12-02 20:12:34,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,426 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 [2023-12-02 20:12:34,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,432 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 [2023-12-02 20:12:34,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,443 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 [2023-12-02 20:12:34,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,454 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 [2023-12-02 20:12:34,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,461 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 [2023-12-02 20:12:34,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,469 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 [2023-12-02 20:12:34,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,487 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 [2023-12-02 20:12:34,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,497 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 [2023-12-02 20:12:34,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,507 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 [2023-12-02 20:12:34,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,513 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 [2023-12-02 20:12:34,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,522 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 [2023-12-02 20:12:34,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,528 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 [2023-12-02 20:12:34,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,545 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 [2023-12-02 20:12:34,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:34,555 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 [2023-12-02 20:12:34,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 20:12:34,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:12:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 20:12:35,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:12:35,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979184165] [2023-12-02 20:12:35,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979184165] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:12:35,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 20:12:35,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-12-02 20:12:35,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767699512] [2023-12-02 20:12:35,551 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 20:12:35,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 20:12:35,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:12:35,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 20:12:35,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-02 20:12:35,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:12:35,553 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:12:35,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:12:35,554 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:35,554 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:12:35,554 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:35,554 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:12:36,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:36,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:12:36,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:36,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:12:36,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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 [2023-12-02 20:12:36,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:12:36,833 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-12-02 20:12:36,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:12:36,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1618586443, now seen corresponding path program 2 times [2023-12-02 20:12:36,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:12:36,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592784235] [2023-12-02 20:12:36,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 20:12:36,834 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 [2023-12-02 20:12:36,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:12:36,835 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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) [2023-12-02 20:12:36,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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 [2023-12-02 20:12:36,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 20:12:36,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:12:36,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 20:12:36,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:12:36,987 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 [2023-12-02 20:12:36,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:36,998 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 [2023-12-02 20:12:37,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,005 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 [2023-12-02 20:12:37,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,014 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 [2023-12-02 20:12:37,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,035 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 [2023-12-02 20:12:37,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,046 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 [2023-12-02 20:12:37,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,055 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 [2023-12-02 20:12:37,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,082 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 [2023-12-02 20:12:37,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,091 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 [2023-12-02 20:12:37,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,098 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 [2023-12-02 20:12:37,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,115 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 [2023-12-02 20:12:37,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,124 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 [2023-12-02 20:12:37,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,144 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 [2023-12-02 20:12:37,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,153 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 [2023-12-02 20:12:37,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,163 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 [2023-12-02 20:12:37,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,179 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 [2023-12-02 20:12:37,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,210 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 [2023-12-02 20:12:37,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,227 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 [2023-12-02 20:12:37,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,238 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 [2023-12-02 20:12:37,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,244 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 [2023-12-02 20:12:37,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,252 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 [2023-12-02 20:12:37,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,260 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 [2023-12-02 20:12:37,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,271 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 [2023-12-02 20:12:37,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:37,286 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 [2023-12-02 20:12:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:12:37,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:12:39,104 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:12:39,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:12:39,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592784235] [2023-12-02 20:12:39,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592784235] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:12:39,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 20:12:39,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2023-12-02 20:12:39,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368924411] [2023-12-02 20:12:39,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 20:12:39,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 20:12:39,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:12:39,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 20:12:39,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-12-02 20:12:39,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:12:39,107 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:12:39,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:12:39,107 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:39,107 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:12:39,107 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:39,107 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:12:39,107 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:12:40,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:12:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:12:40,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:12:40,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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 [2023-12-02 20:12:40,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:12:40,776 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-12-02 20:12:40,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:12:40,777 INFO L85 PathProgramCache]: Analyzing trace with hash 658244981, now seen corresponding path program 3 times [2023-12-02 20:12:40,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:12:40,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653836301] [2023-12-02 20:12:40,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 20:12:40,777 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 [2023-12-02 20:12:40,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:12:40,778 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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) [2023-12-02 20:12:40,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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 [2023-12-02 20:12:40,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 20:12:40,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:12:41,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 20:12:41,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:12:41,018 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 [2023-12-02 20:12:41,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,026 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 [2023-12-02 20:12:41,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,032 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 [2023-12-02 20:12:41,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,040 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 [2023-12-02 20:12:41,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,055 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 [2023-12-02 20:12:41,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,063 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 [2023-12-02 20:12:41,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,070 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 [2023-12-02 20:12:41,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,079 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 [2023-12-02 20:12:41,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,086 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 [2023-12-02 20:12:41,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,091 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 [2023-12-02 20:12:41,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,107 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 [2023-12-02 20:12:41,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,115 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 [2023-12-02 20:12:41,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,124 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 [2023-12-02 20:12:41,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,128 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 [2023-12-02 20:12:41,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,135 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 [2023-12-02 20:12:41,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,140 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 [2023-12-02 20:12:41,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,149 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 [2023-12-02 20:12:41,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,163 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 [2023-12-02 20:12:41,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,181 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 [2023-12-02 20:12:41,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,189 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 [2023-12-02 20:12:41,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,198 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 [2023-12-02 20:12:41,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,212 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 [2023-12-02 20:12:41,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,229 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 [2023-12-02 20:12:41,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:41,250 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 [2023-12-02 20:12:41,936 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 20:12:41,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:12:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 20:12:43,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:12:43,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653836301] [2023-12-02 20:12:43,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653836301] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:12:43,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 20:12:43,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2023-12-02 20:12:43,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615858452] [2023-12-02 20:12:43,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 20:12:43,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 20:12:43,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:12:43,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 20:12:43,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2023-12-02 20:12:43,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:12:43,650 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:12:43,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:12:43,651 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:43,651 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:12:43,651 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:43,651 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:12:43,651 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:12:43,651 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:12:52,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:52,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:12:52,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:52,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:12:52,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:12:52,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 20:12:52,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-02 20:12:53,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:12:53,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-12-02 20:12:53,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:12:53,153 INFO L85 PathProgramCache]: Analyzing trace with hash -64425515, now seen corresponding path program 4 times [2023-12-02 20:12:53,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:12:53,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912061393] [2023-12-02 20:12:53,153 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 20:12:53,153 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 [2023-12-02 20:12:53,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:12:53,154 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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) [2023-12-02 20:12:53,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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 [2023-12-02 20:12:53,314 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 20:12:53,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:12:53,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 20:12:53,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:12:53,339 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 [2023-12-02 20:12:53,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,351 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 [2023-12-02 20:12:53,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,357 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 [2023-12-02 20:12:53,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,365 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 [2023-12-02 20:12:53,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,371 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 [2023-12-02 20:12:53,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,377 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 [2023-12-02 20:12:53,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,387 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 [2023-12-02 20:12:53,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,391 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 [2023-12-02 20:12:53,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,397 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 [2023-12-02 20:12:53,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,405 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 [2023-12-02 20:12:53,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,421 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 [2023-12-02 20:12:53,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,429 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 [2023-12-02 20:12:53,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,446 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 [2023-12-02 20:12:53,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,453 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 [2023-12-02 20:12:53,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,474 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 [2023-12-02 20:12:53,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,488 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 [2023-12-02 20:12:53,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,502 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 [2023-12-02 20:12:53,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,509 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 [2023-12-02 20:12:53,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,515 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 [2023-12-02 20:12:53,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,523 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 [2023-12-02 20:12:53,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,532 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 [2023-12-02 20:12:53,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,538 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 [2023-12-02 20:12:53,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,547 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 [2023-12-02 20:12:53,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:12:53,563 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 [2023-12-02 20:12:54,497 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 69 proven. 93 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 20:12:54,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:12:58,544 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:12:58,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:12:58,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912061393] [2023-12-02 20:12:58,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912061393] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:12:58,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 20:12:58,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 33 [2023-12-02 20:12:58,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298239778] [2023-12-02 20:12:58,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 20:12:58,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-02 20:12:58,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:12:58,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-02 20:12:58,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 20:12:58,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:12:58,548 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:12:58,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 33 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:12:58,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:58,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:12:58,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:12:58,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:12:58,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:12:58,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-12-02 20:12:58,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:13:01,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:13:01,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:13:01,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:13:01,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:13:01,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:13:01,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 20:13:01,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 20:13:01,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-02 20:13:01,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:13:01,633 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-12-02 20:13:01,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:13:01,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1218056917, now seen corresponding path program 5 times [2023-12-02 20:13:01,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:13:01,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946985974] [2023-12-02 20:13:01,634 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 20:13:01,634 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 [2023-12-02 20:13:01,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:13:01,635 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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) [2023-12-02 20:13:01,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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 [2023-12-02 20:13:02,147 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-12-02 20:13:02,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:13:02,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-02 20:13:02,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:13:02,180 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 [2023-12-02 20:13:02,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,191 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 [2023-12-02 20:13:02,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,200 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 [2023-12-02 20:13:02,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,205 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 [2023-12-02 20:13:02,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,211 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 [2023-12-02 20:13:02,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,218 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 [2023-12-02 20:13:02,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,228 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 [2023-12-02 20:13:02,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,233 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 [2023-12-02 20:13:02,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,242 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 [2023-12-02 20:13:02,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,256 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 [2023-12-02 20:13:02,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,262 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 [2023-12-02 20:13:02,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,270 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 [2023-12-02 20:13:02,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,279 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 [2023-12-02 20:13:02,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,284 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 [2023-12-02 20:13:02,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,301 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 [2023-12-02 20:13:02,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,316 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 [2023-12-02 20:13:02,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,325 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 [2023-12-02 20:13:02,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,330 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 [2023-12-02 20:13:02,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,354 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 [2023-12-02 20:13:02,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,383 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 [2023-12-02 20:13:02,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,403 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 [2023-12-02 20:13:02,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,413 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 [2023-12-02 20:13:02,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,424 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 [2023-12-02 20:13:02,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:13:02,443 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 [2023-12-02 20:13:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 29 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:13:04,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:13:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:13:13,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:13:13,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946985974] [2023-12-02 20:13:13,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946985974] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:13:13,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 20:13:13,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24] total 46 [2023-12-02 20:13:13,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505812963] [2023-12-02 20:13:13,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 20:13:13,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-02 20:13:13,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:13:13,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-02 20:13:13,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1838, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 20:13:13,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:13:13,960 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:13:13,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.382978723404255) internal successors, (112), 46 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:13:13,960 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:13:13,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:13:13,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:13:13,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:13:13,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:13:13,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-12-02 20:13:13,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2023-12-02 20:13:13,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:13:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:13:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:13:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:13:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:13:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:13:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 20:13:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 20:13:35,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 20:13:35,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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 [2023-12-02 20:13:36,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:13:36,142 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-12-02 20:13:36,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:13:36,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1402897749, now seen corresponding path program 6 times [2023-12-02 20:13:36,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:13:36,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876934942] [2023-12-02 20:13:36,143 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-02 20:13:36,143 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 [2023-12-02 20:13:36,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:13:36,144 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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) [2023-12-02 20:13:36,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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 [2023-12-02 20:13:37,638 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-02 20:13:37,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:13:37,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 20:13:37,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:13:37,672 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 1 [2023-12-02 20:13:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-02 20:13:38,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:13:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 156 proven. 287 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-02 20:13:46,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:13:46,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876934942] [2023-12-02 20:13:46,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876934942] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:13:46,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 20:13:46,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 51 [2023-12-02 20:13:46,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667533216] [2023-12-02 20:13:46,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 20:13:46,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-02 20:13:46,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:13:46,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-02 20:13:47,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=2430, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 20:13:47,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:13:47,000 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:13:47,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:13:47,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:13:47,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:13:47,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:13:47,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:13:47,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:13:47,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-12-02 20:13:47,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2023-12-02 20:13:47,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2023-12-02 20:13:47,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:13:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:13:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:13:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:13:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:13:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:13:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 20:13:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 20:13:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 20:13:58,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-02 20:13:58,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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)] Ended with exit code 0 [2023-12-02 20:13:58,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:13:58,618 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-12-02 20:13:58,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:13:58,619 INFO L85 PathProgramCache]: Analyzing trace with hash 478173557, now seen corresponding path program 7 times [2023-12-02 20:13:58,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:13:58,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379962442] [2023-12-02 20:13:58,619 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 20:13:58,619 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 [2023-12-02 20:13:58,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:13:58,620 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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) [2023-12-02 20:13:58,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-02 20:13:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:13:58,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-02 20:13:58,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:14:00,178 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 20:14:00,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:14:03,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2023-12-02 20:14:09,281 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 20:14:09,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:14:09,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379962442] [2023-12-02 20:14:09,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379962442] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:14:09,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 20:14:09,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 62 [2023-12-02 20:14:09,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324726303] [2023-12-02 20:14:09,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 20:14:09,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-02 20:14:09,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:14:09,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-02 20:14:09,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=455, Invalid=3577, Unknown=0, NotChecked=0, Total=4032 [2023-12-02 20:14:09,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:14:09,286 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:14:09,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.5396825396825395) internal successors, (160), 63 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:14:09,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:14:09,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:14:09,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:14:09,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:14:09,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:14:09,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-12-02 20:14:09,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2023-12-02 20:14:09,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2023-12-02 20:14:09,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2023-12-02 20:14:09,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:14:24,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:14:24,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:14:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:14:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:14:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:14:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 20:14:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 20:14:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 20:14:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-02 20:14:24,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-02 20:14:24,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-02 20:14:24,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:14:24,818 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-12-02 20:14:24,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:14:24,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2090947275, now seen corresponding path program 8 times [2023-12-02 20:14:24,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:14:24,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659099971] [2023-12-02 20:14:24,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 20:14:24,819 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 [2023-12-02 20:14:24,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:14:24,820 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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) [2023-12-02 20:14:24,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 20:14:25,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 20:14:25,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:14:25,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-02 20:14:25,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:14:25,404 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 1 [2023-12-02 20:14:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 0 proven. 1416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:14:28,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:14:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 32 proven. 1384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:14:59,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:14:59,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659099971] [2023-12-02 20:14:59,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659099971] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:14:59,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 20:14:59,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 102 [2023-12-02 20:14:59,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996459241] [2023-12-02 20:14:59,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 20:14:59,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2023-12-02 20:14:59,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:14:59,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2023-12-02 20:14:59,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1481, Invalid=9231, Unknown=0, NotChecked=0, Total=10712 [2023-12-02 20:14:59,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:14:59,050 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:14:59,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 2.3689320388349513) internal successors, (244), 103 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:14:59,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:14:59,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:14:59,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:14:59,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:14:59,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:14:59,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-12-02 20:14:59,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2023-12-02 20:14:59,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2023-12-02 20:14:59,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2023-12-02 20:14:59,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 53 states. [2023-12-02 20:14:59,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:16:12,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:16:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:16:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:16:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:16:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:16:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 20:16:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 20:16:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 20:16:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-02 20:16:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-02 20:16:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-02 20:16:12,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-02 20:16:13,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:16:13,190 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-12-02 20:16:13,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:16:13,191 INFO L85 PathProgramCache]: Analyzing trace with hash 182808117, now seen corresponding path program 9 times [2023-12-02 20:16:13,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:16:13,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391822121] [2023-12-02 20:16:13,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 20:16:13,192 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 [2023-12-02 20:16:13,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:16:13,193 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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) [2023-12-02 20:16:13,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-02 20:16:24,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2023-12-02 20:16:24,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:16:24,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 84 conjunts are in the unsatisfiable core [2023-12-02 20:16:24,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:16:24,728 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 13 treesize of output 7 [2023-12-02 20:16:24,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,746 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 [2023-12-02 20:16:24,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,755 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 [2023-12-02 20:16:24,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,760 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 [2023-12-02 20:16:24,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,765 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 [2023-12-02 20:16:24,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,772 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 [2023-12-02 20:16:24,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,782 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 [2023-12-02 20:16:24,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,799 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 [2023-12-02 20:16:24,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,809 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 [2023-12-02 20:16:24,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,814 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 [2023-12-02 20:16:24,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,821 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 [2023-12-02 20:16:24,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,829 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 [2023-12-02 20:16:24,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,861 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 [2023-12-02 20:16:24,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,879 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 [2023-12-02 20:16:24,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,888 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 [2023-12-02 20:16:24,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,903 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 [2023-12-02 20:16:24,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,913 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 [2023-12-02 20:16:24,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,927 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 [2023-12-02 20:16:24,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,944 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 [2023-12-02 20:16:24,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,952 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 [2023-12-02 20:16:24,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,958 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 [2023-12-02 20:16:24,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,965 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 [2023-12-02 20:16:24,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,971 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 [2023-12-02 20:16:24,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:16:24,987 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 [2023-12-02 20:16:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2576 backedges. 32 proven. 2544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:16:37,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:18:18,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2576 backedges. 0 proven. 2576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:18:18,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:18:18,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391822121] [2023-12-02 20:18:18,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391822121] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:18:18,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 20:18:18,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 70] total 139 [2023-12-02 20:18:18,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499604626] [2023-12-02 20:18:18,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 20:18:18,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2023-12-02 20:18:18,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:18:18,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2023-12-02 20:18:18,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2658, Invalid=16802, Unknown=0, NotChecked=0, Total=19460 [2023-12-02 20:18:18,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:18:18,043 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:18:18,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 2.4285714285714284) internal successors, (340), 139 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:18:18,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:18:18,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:18:18,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:18:18,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:18:18,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:18:18,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-12-02 20:18:18,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2023-12-02 20:18:18,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2023-12-02 20:18:18,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2023-12-02 20:18:18,044 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 53 states. [2023-12-02 20:18:18,044 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 69 states. [2023-12-02 20:18:18,044 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:24,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:19:42,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:19:59,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:20:17,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:20:34,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:20:51,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:21:08,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:21:24,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:21:40,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:21:51,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:22:07,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:22:16,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:22:26,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:22:41,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:22:50,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:22:59,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:23:08,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:23:16,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:23:24,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:23:32,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:23:40,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:23:51,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:23:58,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:24:11,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:24:16,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:24:37,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 20:24:53,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:24:53,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:24:53,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:24:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:24:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:24:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 20:24:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 20:24:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 20:24:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-02 20:24:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-02 20:24:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-02 20:24:53,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-02 20:24:53,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-02 20:24:53,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:24:53,745 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-12-02 20:24:53,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:24:53,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1715894603, now seen corresponding path program 10 times [2023-12-02 20:24:53,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:24:53,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395563733] [2023-12-02 20:24:53,746 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 20:24:53,746 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 [2023-12-02 20:24:53,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:24:53,747 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -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) [2023-12-02 20:24:53,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b3e489-9017-4b19-aa46-af3eff6fe377/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-02 20:24:55,095 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 20:24:55,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:24:55,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 104 conjunts are in the unsatisfiable core [2023-12-02 20:24:55,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:25:05,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5908 backedges. 0 proven. 5904 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 20:25:05,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:25:34,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2023-12-02 20:26:48,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5908 backedges. 0 proven. 5904 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 20:26:48,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:26:48,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395563733] [2023-12-02 20:26:48,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395563733] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:26:48,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 20:26:48,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 198 [2023-12-02 20:26:48,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751756971] [2023-12-02 20:26:48,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 20:26:48,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 200 states [2023-12-02 20:26:48,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:26:48,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2023-12-02 20:26:48,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5121, Invalid=34679, Unknown=0, NotChecked=0, Total=39800 [2023-12-02 20:26:48,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:26:48,101 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:26:48,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 200 states, 199 states have (on average 2.371859296482412) internal successors, (472), 199 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:26:48,101 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:26:48,101 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:26:48,101 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:26:48,101 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-12-02 20:26:48,101 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:26:48,102 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-12-02 20:26:48,102 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2023-12-02 20:26:48,102 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2023-12-02 20:26:48,102 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2023-12-02 20:26:48,102 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 53 states. [2023-12-02 20:26:48,102 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 69 states. [2023-12-02 20:26:48,102 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2023-12-02 20:26:48,102 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.