./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) 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_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:50:14,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:50:14,494 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2023-11-26 11:50:14,500 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:50:14,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:50:14,528 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:50:14,529 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:50:14,530 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:50:14,531 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:50:14,531 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:50:14,532 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:50:14,533 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:50:14,533 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:50:14,534 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:50:14,535 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:50:14,535 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:50:14,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:50:14,536 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:50:14,537 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:50:14,537 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:50:14,538 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:50:14,543 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:50:14,543 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:50:14,544 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:50:14,544 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:50:14,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:50:14,545 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:50:14,546 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:50:14,547 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:50:14,547 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:50:14,549 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:50:14,549 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:50:14,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:50:14,550 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:50:14,550 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:50:14,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:14,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:50:14,551 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:50:14,551 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:50:14,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:50:14,552 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:50:14,552 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:50:14,553 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:50:14,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:50:14,554 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 [2023-11-26 11:50:14,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:50:14,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:50:14,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:50:14,947 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:50:14,951 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:50:14,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2023-11-26 11:50:18,390 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:50:18,788 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:50:18,789 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2023-11-26 11:50:18,815 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/data/6b66ca11e/06f6eb9729304863bbbe746608025d29/FLAG1bb921110 [2023-11-26 11:50:18,833 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/data/6b66ca11e/06f6eb9729304863bbbe746608025d29 [2023-11-26 11:50:18,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:50:18,841 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:50:18,844 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:18,845 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:50:18,855 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:50:18,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:18" (1/1) ... [2023-11-26 11:50:18,861 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@315e9110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:18, skipping insertion in model container [2023-11-26 11:50:18,861 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:18" (1/1) ... [2023-11-26 11:50:18,952 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:50:19,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:19,795 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-26 11:50:19,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@244f3013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:19, skipping insertion in model container [2023-11-26 11:50:19,797 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:19,798 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-26 11:50:19,801 INFO L158 Benchmark]: Toolchain (without parser) took 958.46ms. Allocated memory is still 176.2MB. Free memory was 125.6MB in the beginning and 105.1MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 11:50:19,802 INFO L158 Benchmark]: CDTParser took 1.75ms. Allocated memory is still 102.8MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:50:19,803 INFO L158 Benchmark]: CACSL2BoogieTranslator took 953.32ms. Allocated memory is still 176.2MB. Free memory was 125.6MB in the beginning and 105.1MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 11:50:19,807 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.75ms. Allocated memory is still 102.8MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 953.32ms. Allocated memory is still 176.2MB. Free memory was 125.6MB in the beginning and 105.1MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:50:22,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:50:22,926 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2023-11-26 11:50:22,936 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:50:22,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:50:22,997 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:50:22,998 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:50:22,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:50:23,001 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:50:23,008 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:50:23,008 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:50:23,009 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:50:23,010 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:50:23,012 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:50:23,013 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:50:23,014 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:50:23,015 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:50:23,016 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:50:23,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:50:23,017 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:50:23,018 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:50:23,018 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:50:23,019 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:50:23,020 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:50:23,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:50:23,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:50:23,021 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:50:23,022 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 11:50:23,023 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 11:50:23,023 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:50:23,025 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:50:23,026 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:50:23,027 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:50:23,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:50:23,028 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:50:23,028 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:50:23,029 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:50:23,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:23,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:50:23,031 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:50:23,031 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 11:50:23,032 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 11:50:23,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:50:23,032 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:50:23,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:50:23,034 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:50:23,034 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 11:50:23,034 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 [2023-11-26 11:50:23,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:50:23,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:50:23,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:50:23,555 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:50:23,555 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:50:23,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2023-11-26 11:50:27,057 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:50:27,498 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:50:27,498 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2023-11-26 11:50:27,540 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/data/eeef5a876/96d47c8b9d424f4793ff2cfd4aa08be8/FLAG2f50cbbe2 [2023-11-26 11:50:27,557 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/data/eeef5a876/96d47c8b9d424f4793ff2cfd4aa08be8 [2023-11-26 11:50:27,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:50:27,562 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:50:27,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:27,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:50:27,572 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:50:27,573 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:27" (1/1) ... [2023-11-26 11:50:27,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4273ce31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:27, skipping insertion in model container [2023-11-26 11:50:27,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:27" (1/1) ... [2023-11-26 11:50:27,709 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:50:28,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:28,620 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-26 11:50:28,637 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:50:28,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:28,776 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:50:28,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:28,945 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:50:28,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:28 WrapperNode [2023-11-26 11:50:28,946 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:28,947 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:28,947 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:50:28,948 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:50:28,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:28" (1/1) ... [2023-11-26 11:50:29,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:28" (1/1) ... [2023-11-26 11:50:29,174 INFO L138 Inliner]: procedures = 180, calls = 350, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1161 [2023-11-26 11:50:29,175 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:29,176 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:50:29,176 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:50:29,176 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:50:29,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:28" (1/1) ... [2023-11-26 11:50:29,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:28" (1/1) ... [2023-11-26 11:50:29,210 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:28" (1/1) ... [2023-11-26 11:50:29,330 INFO L175 MemorySlicer]: Split 319 memory accesses to 4 slices as follows [2, 307, 5, 5]. 96 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 84 writes are split as follows [0, 82, 1, 1]. [2023-11-26 11:50:29,330 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:28" (1/1) ... [2023-11-26 11:50:29,331 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:28" (1/1) ... [2023-11-26 11:50:29,385 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:28" (1/1) ... [2023-11-26 11:50:29,395 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:28" (1/1) ... [2023-11-26 11:50:29,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:28" (1/1) ... [2023-11-26 11:50:29,409 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:28" (1/1) ... [2023-11-26 11:50:29,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:50:29,423 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:50:29,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:50:29,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:50:29,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:28" (1/1) ... [2023-11-26 11:50:29,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:29,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:29,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:50:29,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:50:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-26 11:50:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-26 11:50:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-26 11:50:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-26 11:50:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-26 11:50:29,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-26 11:50:29,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-26 11:50:29,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-26 11:50:29,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:50:29,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:50:29,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-26 11:50:29,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-26 11:50:29,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-26 11:50:29,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-26 11:50:29,512 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-26 11:50:29,512 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-26 11:50:29,512 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-26 11:50:29,513 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-26 11:50:29,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:50:29,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:50:29,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:50:29,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:50:29,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:50:29,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:50:29,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:50:29,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:50:29,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:50:29,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:50:29,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 11:50:29,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:50:29,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 11:50:29,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-26 11:50:29,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-26 11:50:29,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-26 11:50:29,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 11:50:29,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 11:50:29,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-26 11:50:29,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-26 11:50:29,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:50:29,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:50:29,921 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:50:29,924 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:50:44,841 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:50:44,881 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:50:44,882 INFO L309 CfgBuilder]: Removed 60 assume(true) statements. [2023-11-26 11:50:44,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:44 BoogieIcfgContainer [2023-11-26 11:50:44,883 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:50:44,885 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:50:44,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:50:44,888 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:50:44,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:50:27" (1/3) ... [2023-11-26 11:50:44,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf2ea3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:44, skipping insertion in model container [2023-11-26 11:50:44,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:28" (2/3) ... [2023-11-26 11:50:44,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf2ea3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:44, skipping insertion in model container [2023-11-26 11:50:44,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:44" (3/3) ... [2023-11-26 11:50:44,891 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-1.i [2023-11-26 11:50:44,909 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:50:44,909 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 11:50:44,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:50:44,964 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@16b0933b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:50:44,964 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 11:50:44,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 213 states, 192 states have (on average 1.6770833333333333) internal successors, (322), 204 states have internal predecessors, (322), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 11:50:44,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:50:44,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:44,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:50:44,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:50:44,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:44,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1461427427, now seen corresponding path program 1 times [2023-11-26 11:50:44,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:44,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431118011] [2023-11-26 11:50:44,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:44,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:44,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:45,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:50:45,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-26 11:50:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:45,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:50:45,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:45,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:45,264 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:45,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:45,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431118011] [2023-11-26 11:50:45,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431118011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:45,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:45,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:45,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701561884] [2023-11-26 11:50:45,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:45,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:50:45,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:45,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:50:45,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:50:45,321 INFO L87 Difference]: Start difference. First operand has 213 states, 192 states have (on average 1.6770833333333333) internal successors, (322), 204 states have internal predecessors, (322), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:45,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:45,404 INFO L93 Difference]: Finished difference Result 212 states and 284 transitions. [2023-11-26 11:50:45,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:50:45,424 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-26 11:50:45,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:45,436 INFO L225 Difference]: With dead ends: 212 [2023-11-26 11:50:45,441 INFO L226 Difference]: Without dead ends: 211 [2023-11-26 11:50:45,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:50:45,447 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:45,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-26 11:50:45,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2023-11-26 11:50:45,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 191 states have (on average 1.3141361256544504) internal successors, (251), 202 states have internal predecessors, (251), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 11:50:45,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 283 transitions. [2023-11-26 11:50:45,504 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 283 transitions. Word has length 6 [2023-11-26 11:50:45,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:45,505 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 283 transitions. [2023-11-26 11:50:45,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:45,506 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 283 transitions. [2023-11-26 11:50:45,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:50:45,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:45,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:50:45,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-26 11:50:45,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:45,710 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:50:45,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:45,710 INFO L85 PathProgramCache]: Analyzing trace with hash 801042642, now seen corresponding path program 1 times [2023-11-26 11:50:45,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:45,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287147176] [2023-11-26 11:50:45,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:45,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:45,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:45,713 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:50:45,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-26 11:50:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:45,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:50:45,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:45,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:45,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:45,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287147176] [2023-11-26 11:50:45,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287147176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:45,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:45,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:45,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690445053] [2023-11-26 11:50:45,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:45,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:45,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:45,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:45,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:45,907 INFO L87 Difference]: Start difference. First operand 211 states and 283 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:46,189 INFO L93 Difference]: Finished difference Result 385 states and 509 transitions. [2023-11-26 11:50:46,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:46,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-26 11:50:46,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:46,194 INFO L225 Difference]: With dead ends: 385 [2023-11-26 11:50:46,195 INFO L226 Difference]: Without dead ends: 385 [2023-11-26 11:50:46,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:46,197 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 213 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:46,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 580 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:50:46,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-11-26 11:50:46,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 212. [2023-11-26 11:50:46,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 192 states have (on average 1.3125) internal successors, (252), 203 states have internal predecessors, (252), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 11:50:46,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 284 transitions. [2023-11-26 11:50:46,230 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 284 transitions. Word has length 6 [2023-11-26 11:50:46,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:46,231 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 284 transitions. [2023-11-26 11:50:46,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,231 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 284 transitions. [2023-11-26 11:50:46,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-26 11:50:46,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:46,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:46,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:46,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:46,450 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:50:46,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:46,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1946388268, now seen corresponding path program 1 times [2023-11-26 11:50:46,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:46,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009918870] [2023-11-26 11:50:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:46,456 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:46,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:46,458 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:50:46,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-26 11:50:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:47,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:50:47,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:47,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:47,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:47,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009918870] [2023-11-26 11:50:47,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009918870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:47,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:47,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:47,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503872433] [2023-11-26 11:50:47,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:47,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:47,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:47,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:47,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:47,302 INFO L87 Difference]: Start difference. First operand 212 states and 284 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 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) [2023-11-26 11:50:47,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:47,471 INFO L93 Difference]: Finished difference Result 216 states and 280 transitions. [2023-11-26 11:50:47,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:47,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 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) Word has length 112 [2023-11-26 11:50:47,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:47,475 INFO L225 Difference]: With dead ends: 216 [2023-11-26 11:50:47,475 INFO L226 Difference]: Without dead ends: 216 [2023-11-26 11:50:47,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:47,477 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 37 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:47,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 728 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:47,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-26 11:50:47,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2023-11-26 11:50:47,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 195 states have (on average 1.2666666666666666) internal successors, (247), 206 states have internal predecessors, (247), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 11:50:47,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 279 transitions. [2023-11-26 11:50:47,494 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 279 transitions. Word has length 112 [2023-11-26 11:50:47,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:47,495 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 279 transitions. [2023-11-26 11:50:47,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 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) [2023-11-26 11:50:47,495 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 279 transitions. [2023-11-26 11:50:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-26 11:50:47,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:47,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:47,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:47,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:47,712 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:50:47,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:47,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1835813064, now seen corresponding path program 1 times [2023-11-26 11:50:47,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:47,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169431961] [2023-11-26 11:50:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:47,715 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:47,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:47,716 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:50:47,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-26 11:50:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:48,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:50:48,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:48,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:48,542 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:48,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:48,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169431961] [2023-11-26 11:50:48,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169431961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:48,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:48,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:50:48,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224262222] [2023-11-26 11:50:48,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:48,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:48,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:48,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:48,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:48,546 INFO L87 Difference]: Start difference. First operand 215 states and 279 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 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) [2023-11-26 11:50:48,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:48,688 INFO L93 Difference]: Finished difference Result 209 states and 269 transitions. [2023-11-26 11:50:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:48,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 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) Word has length 112 [2023-11-26 11:50:48,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:48,691 INFO L225 Difference]: With dead ends: 209 [2023-11-26 11:50:48,691 INFO L226 Difference]: Without dead ends: 209 [2023-11-26 11:50:48,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:48,693 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 4 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:48,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 966 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:48,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-26 11:50:48,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-11-26 11:50:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 189 states have (on average 1.253968253968254) internal successors, (237), 200 states have internal predecessors, (237), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 11:50:48,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 269 transitions. [2023-11-26 11:50:48,705 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 269 transitions. Word has length 112 [2023-11-26 11:50:48,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:48,706 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 269 transitions. [2023-11-26 11:50:48,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 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) [2023-11-26 11:50:48,706 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 269 transitions. [2023-11-26 11:50:48,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-26 11:50:48,712 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:48,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:48,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:50:48,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:48,923 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:50:48,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:48,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1134298038, now seen corresponding path program 1 times [2023-11-26 11:50:48,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:48,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887056242] [2023-11-26 11:50:48,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:48,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:48,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:48,927 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:50:48,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-26 11:50:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:49,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:50:49,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:49,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:49,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:49,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887056242] [2023-11-26 11:50:49,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887056242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:49,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:49,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:49,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946564148] [2023-11-26 11:50:49,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:49,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:49,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:49,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:49,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:49,991 INFO L87 Difference]: Start difference. First operand 209 states and 269 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 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) [2023-11-26 11:50:50,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:50,604 INFO L93 Difference]: Finished difference Result 245 states and 305 transitions. [2023-11-26 11:50:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:50,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 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) Word has length 112 [2023-11-26 11:50:50,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:50,613 INFO L225 Difference]: With dead ends: 245 [2023-11-26 11:50:50,613 INFO L226 Difference]: Without dead ends: 245 [2023-11-26 11:50:50,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:50,615 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 7 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:50,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 514 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:50:50,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-11-26 11:50:50,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2023-11-26 11:50:50,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 225 states have (on average 1.2133333333333334) internal successors, (273), 236 states have internal predecessors, (273), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 11:50:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 305 transitions. [2023-11-26 11:50:50,627 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 305 transitions. Word has length 112 [2023-11-26 11:50:50,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:50,627 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 305 transitions. [2023-11-26 11:50:50,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 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) [2023-11-26 11:50:50,628 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 305 transitions. [2023-11-26 11:50:50,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-26 11:50:50,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:50,631 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:50,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:50,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:50,846 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:50:50,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:50,846 INFO L85 PathProgramCache]: Analyzing trace with hash 744696833, now seen corresponding path program 1 times [2023-11-26 11:50:50,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:50,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12494770] [2023-11-26 11:50:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:50,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:50,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:50,848 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:50:50,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-26 11:50:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:51,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:50:51,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:51,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:51,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:51,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12494770] [2023-11-26 11:50:51,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12494770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:51,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:51,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:51,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527986855] [2023-11-26 11:50:51,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:51,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:51,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:51,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:51,665 INFO L87 Difference]: Start difference. First operand 245 states and 305 transitions. Second operand has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:50:51,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:51,768 INFO L93 Difference]: Finished difference Result 247 states and 309 transitions. [2023-11-26 11:50:51,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:51,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 125 [2023-11-26 11:50:51,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:51,771 INFO L225 Difference]: With dead ends: 247 [2023-11-26 11:50:51,771 INFO L226 Difference]: Without dead ends: 247 [2023-11-26 11:50:51,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:51,772 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 1 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:51,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 779 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:51,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-26 11:50:51,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2023-11-26 11:50:51,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 226 states have (on average 1.2168141592920354) internal successors, (275), 238 states have internal predecessors, (275), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-26 11:50:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 309 transitions. [2023-11-26 11:50:51,786 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 309 transitions. Word has length 125 [2023-11-26 11:50:51,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:51,786 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 309 transitions. [2023-11-26 11:50:51,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:50:51,787 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 309 transitions. [2023-11-26 11:50:51,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-26 11:50:51,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:51,794 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:51,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:52,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:52,006 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:50:52,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:52,007 INFO L85 PathProgramCache]: Analyzing trace with hash -976710729, now seen corresponding path program 1 times [2023-11-26 11:50:52,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:52,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160019912] [2023-11-26 11:50:52,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:52,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:52,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:52,009 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:50:52,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-26 11:50:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:52,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:50:52,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:50:52,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:52,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:50:52,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:52,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160019912] [2023-11-26 11:50:52,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160019912] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:52,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:50:52,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:50:52,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666956281] [2023-11-26 11:50:52,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:52,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:50:52,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:52,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:50:52,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:50:52,983 INFO L87 Difference]: Start difference. First operand 247 states and 309 transitions. Second operand has 8 states, 6 states have (on average 21.5) internal successors, (129), 8 states have internal predecessors, (129), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:50:53,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:53,323 INFO L93 Difference]: Finished difference Result 256 states and 324 transitions. [2023-11-26 11:50:53,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:50:53,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 21.5) internal successors, (129), 8 states have internal predecessors, (129), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 127 [2023-11-26 11:50:53,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:53,326 INFO L225 Difference]: With dead ends: 256 [2023-11-26 11:50:53,327 INFO L226 Difference]: Without dead ends: 256 [2023-11-26 11:50:53,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:50:53,328 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 7 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:53,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1287 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:50:53,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-26 11:50:53,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 255. [2023-11-26 11:50:53,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 233 states have (on average 1.2360515021459229) internal successors, (288), 245 states have internal predecessors, (288), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-26 11:50:53,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 322 transitions. [2023-11-26 11:50:53,339 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 322 transitions. Word has length 127 [2023-11-26 11:50:53,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:53,340 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 322 transitions. [2023-11-26 11:50:53,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 21.5) internal successors, (129), 8 states have internal predecessors, (129), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:50:53,340 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 322 transitions. [2023-11-26 11:50:53,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-26 11:50:53,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:53,342 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:53,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:53,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:53,554 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:50:53,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:53,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1825307265, now seen corresponding path program 2 times [2023-11-26 11:50:53,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:53,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801070948] [2023-11-26 11:50:53,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:50:53,555 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:53,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:53,556 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:50:53,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-26 11:50:54,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:50:54,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:50:54,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:50:54,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:50:54,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:50:54,799 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:54,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801070948] [2023-11-26 11:50:54,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801070948] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:54,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:50:54,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-26 11:50:54,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138070554] [2023-11-26 11:50:54,799 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:54,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:50:54,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:54,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:50:54,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:50:54,801 INFO L87 Difference]: Start difference. First operand 255 states and 322 transitions. Second operand has 14 states, 12 states have (on average 11.25) internal successors, (135), 14 states have internal predecessors, (135), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:50:55,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:55,916 INFO L93 Difference]: Finished difference Result 270 states and 348 transitions. [2023-11-26 11:50:55,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-26 11:50:55,917 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 11.25) internal successors, (135), 14 states have internal predecessors, (135), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 131 [2023-11-26 11:50:55,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:55,919 INFO L225 Difference]: With dead ends: 270 [2023-11-26 11:50:55,919 INFO L226 Difference]: Without dead ends: 268 [2023-11-26 11:50:55,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2023-11-26 11:50:55,921 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 13 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:55,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1549 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:50:55,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-26 11:50:55,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2023-11-26 11:50:55,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 242 states have (on average 1.2396694214876034) internal successors, (300), 254 states have internal predecessors, (300), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-26 11:50:55,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 334 transitions. [2023-11-26 11:50:55,932 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 334 transitions. Word has length 131 [2023-11-26 11:50:55,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:55,933 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 334 transitions. [2023-11-26 11:50:55,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 11.25) internal successors, (135), 14 states have internal predecessors, (135), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:50:55,934 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 334 transitions. [2023-11-26 11:50:55,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-26 11:50:55,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:55,936 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:55,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:50:56,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:56,148 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:50:56,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:56,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1545638559, now seen corresponding path program 3 times [2023-11-26 11:50:56,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:56,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506528244] [2023-11-26 11:50:56,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:50:56,150 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:56,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:56,151 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:50:56,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-26 11:50:56,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-26 11:50:56,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:50:56,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:50:56,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-26 11:50:56,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:56,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:56,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506528244] [2023-11-26 11:50:56,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506528244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:56,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:56,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:56,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162265494] [2023-11-26 11:50:56,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:56,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:56,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:56,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:56,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:56,952 INFO L87 Difference]: Start difference. First operand 264 states and 334 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:50:57,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:57,101 INFO L93 Difference]: Finished difference Result 268 states and 330 transitions. [2023-11-26 11:50:57,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:57,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 140 [2023-11-26 11:50:57,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:57,105 INFO L225 Difference]: With dead ends: 268 [2023-11-26 11:50:57,105 INFO L226 Difference]: Without dead ends: 268 [2023-11-26 11:50:57,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:57,106 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 37 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:57,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 683 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:57,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-26 11:50:57,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2023-11-26 11:50:57,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 245 states have (on average 1.2040816326530612) internal successors, (295), 257 states have internal predecessors, (295), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-26 11:50:57,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 329 transitions. [2023-11-26 11:50:57,117 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 329 transitions. Word has length 140 [2023-11-26 11:50:57,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:57,117 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 329 transitions. [2023-11-26 11:50:57,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:50:57,118 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 329 transitions. [2023-11-26 11:50:57,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-26 11:50:57,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:57,120 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:57,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:57,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:57,339 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:50:57,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:57,340 INFO L85 PathProgramCache]: Analyzing trace with hash 687087573, now seen corresponding path program 1 times [2023-11-26 11:50:57,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:57,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178696245] [2023-11-26 11:50:57,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:57,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:57,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:57,343 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:50:57,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-26 11:50:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:50:58,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 69 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:50:58,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 1 proven. 122 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 11:50:59,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:59,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178696245] [2023-11-26 11:50:59,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178696245] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:59,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:50:59,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-26 11:50:59,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771458777] [2023-11-26 11:50:59,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:59,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-26 11:50:59,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:59,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-26 11:50:59,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-26 11:50:59,572 INFO L87 Difference]: Start difference. First operand 267 states and 329 transitions. Second operand has 26 states, 24 states have (on average 6.125) internal successors, (147), 26 states have internal predecessors, (147), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:51:03,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:03,712 INFO L93 Difference]: Finished difference Result 297 states and 385 transitions. [2023-11-26 11:51:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-26 11:51:03,713 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 6.125) internal successors, (147), 26 states have internal predecessors, (147), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 140 [2023-11-26 11:51:03,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:03,715 INFO L225 Difference]: With dead ends: 297 [2023-11-26 11:51:03,716 INFO L226 Difference]: Without dead ends: 295 [2023-11-26 11:51:03,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1025, Invalid=2281, Unknown=0, NotChecked=0, Total=3306 [2023-11-26 11:51:03,718 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 24 mSDsluCounter, 2952 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:03,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3202 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-26 11:51:03,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-26 11:51:03,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 285. [2023-11-26 11:51:03,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 263 states have (on average 1.2129277566539924) internal successors, (319), 275 states have internal predecessors, (319), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-26 11:51:03,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 353 transitions. [2023-11-26 11:51:03,735 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 353 transitions. Word has length 140 [2023-11-26 11:51:03,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:03,735 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 353 transitions. [2023-11-26 11:51:03,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 6.125) internal successors, (147), 26 states have internal predecessors, (147), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:51:03,735 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 353 transitions. [2023-11-26 11:51:03,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-26 11:51:03,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:03,738 INFO L195 NwaCegarLoop]: trace histogram [33, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:03,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:03,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:51:03,951 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:51:03,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:03,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1413444693, now seen corresponding path program 2 times [2023-11-26 11:51:03,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:51:03,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749390270] [2023-11-26 11:51:03,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:51:03,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:51:03,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:51:03,955 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:51:03,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95441bdc-a938-435f-9e25-711c64586f0c/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:51:04,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:51:04,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:51:04,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-26 11:51:04,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 279 proven. 253 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-26 11:51:05,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 1 proven. 530 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-26 11:51:08,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:51:08,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749390270] [2023-11-26 11:51:08,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749390270] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:08,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:51:08,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-11-26 11:51:08,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768103252] [2023-11-26 11:51:08,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:08,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-26 11:51:08,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:51:08,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-26 11:51:08,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2023-11-26 11:51:08,750 INFO L87 Difference]: Start difference. First operand 285 states and 353 transitions. Second operand has 50 states, 48 states have (on average 3.5625) internal successors, (171), 50 states have internal predecessors, (171), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4)