./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a849f68 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-9a849f6-m [2024-10-26 13:50:58,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-26 13:50:58,134 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2024-10-26 13:50:58,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-26 13:50:58,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-26 13:50:58,162 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-26 13:50:58,162 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-26 13:50:58,163 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-26 13:50:58,164 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-26 13:50:58,166 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-26 13:50:58,166 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-26 13:50:58,167 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-26 13:50:58,167 INFO L153 SettingsManager]: * Use SBE=true [2024-10-26 13:50:58,167 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-26 13:50:58,168 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-26 13:50:58,168 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-26 13:50:58,168 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-26 13:50:58,169 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-26 13:50:58,169 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-26 13:50:58,169 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-26 13:50:58,169 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-26 13:50:58,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-26 13:50:58,173 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-26 13:50:58,174 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-26 13:50:58,174 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-26 13:50:58,174 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-26 13:50:58,174 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-26 13:50:58,175 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-26 13:50:58,175 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-26 13:50:58,175 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-26 13:50:58,175 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-26 13:50:58,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-26 13:50:58,175 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-26 13:50:58,175 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-26 13:50:58,176 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-26 13:50:58,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-26 13:50:58,176 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-26 13:50:58,176 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2024-10-26 13:50:58,176 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-10-26 13:50:58,176 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-10-26 13:50:58,176 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-10-26 13:50:58,177 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 [2024-10-26 13:50:58,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-26 13:50:58,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-26 13:50:58,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-26 13:50:58,415 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-26 13:50:58,416 INFO L274 PluginConnector]: CDTParser initialized [2024-10-26 13:50:58,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-10-26 13:50:59,627 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-26 13:50:59,782 INFO L384 CDTParser]: Found 1 translation units. [2024-10-26 13:50:59,783 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-10-26 13:50:59,789 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/0e76b6649/e4c3e5ea665e4388877598f0c1f4a55f/FLAG180668101 [2024-10-26 13:51:00,189 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/0e76b6649/e4c3e5ea665e4388877598f0c1f4a55f [2024-10-26 13:51:00,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-26 13:51:00,192 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-26 13:51:00,193 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-26 13:51:00,193 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-26 13:51:00,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-26 13:51:00,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 01:51:00" (1/1) ... [2024-10-26 13:51:00,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4068030e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 01:51:00, skipping insertion in model container [2024-10-26 13:51:00,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 01:51:00" (1/1) ... [2024-10-26 13:51:00,216 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-26 13:51:00,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-26 13:51:00,402 ERROR L321 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) [2024-10-26 13:51:00,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@44aa2827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 01:51:00, skipping insertion in model container [2024-10-26 13:51:00,404 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-26 13:51:00,405 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-26 13:51:00,407 INFO L158 Benchmark]: Toolchain (without parser) took 213.35ms. Allocated memory is still 203.4MB. Free memory was 173.1MB in the beginning and 164.9MB in the end (delta: 8.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2024-10-26 13:51:00,408 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-26 13:51:00,408 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.25ms. Allocated memory is still 203.4MB. Free memory was 172.8MB in the beginning and 164.9MB in the end (delta: 7.9MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2024-10-26 13:51:00,409 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.25ms. Allocated memory is still 203.4MB. Free memory was 172.8MB in the beginning and 164.9MB in the end (delta: 7.9MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 97]: 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: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-9a849f6-m [2024-10-26 13:51:02,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-26 13:51:02,083 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Bitvector.epf [2024-10-26 13:51:02,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-26 13:51:02,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-26 13:51:02,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-26 13:51:02,116 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-26 13:51:02,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-26 13:51:02,117 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-26 13:51:02,117 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-26 13:51:02,117 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-26 13:51:02,117 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-26 13:51:02,118 INFO L153 SettingsManager]: * Use SBE=true [2024-10-26 13:51:02,118 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-26 13:51:02,118 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-26 13:51:02,119 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-26 13:51:02,120 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-26 13:51:02,120 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-26 13:51:02,120 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-26 13:51:02,120 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-26 13:51:02,122 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-26 13:51:02,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-26 13:51:02,123 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-26 13:51:02,123 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-26 13:51:02,123 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-26 13:51:02,123 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-26 13:51:02,124 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-26 13:51:02,124 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-26 13:51:02,124 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-26 13:51:02,124 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-26 13:51:02,124 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-26 13:51:02,125 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-26 13:51:02,125 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-26 13:51:02,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-26 13:51:02,125 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-26 13:51:02,125 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-26 13:51:02,126 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-26 13:51:02,126 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-26 13:51:02,126 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-26 13:51:02,126 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2024-10-26 13:51:02,126 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-10-26 13:51:02,129 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-10-26 13:51:02,129 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-10-26 13:51:02,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-26 13:51:02,130 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 [2024-10-26 13:51:02,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-26 13:51:02,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-26 13:51:02,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-26 13:51:02,429 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-26 13:51:02,430 INFO L274 PluginConnector]: CDTParser initialized [2024-10-26 13:51:02,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-10-26 13:51:03,652 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-26 13:51:03,827 INFO L384 CDTParser]: Found 1 translation units. [2024-10-26 13:51:03,828 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-10-26 13:51:03,837 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/8536a4aa4/5d5c8e995f5140d2a9cdd992507791a9/FLAG783de0fd3 [2024-10-26 13:51:03,849 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/8536a4aa4/5d5c8e995f5140d2a9cdd992507791a9 [2024-10-26 13:51:03,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-26 13:51:03,852 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-26 13:51:03,853 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-26 13:51:03,853 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-26 13:51:03,857 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-26 13:51:03,858 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 01:51:03" (1/1) ... [2024-10-26 13:51:03,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c91efac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 01:51:03, skipping insertion in model container [2024-10-26 13:51:03,859 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 01:51:03" (1/1) ... [2024-10-26 13:51:03,876 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-26 13:51:04,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-26 13:51:04,081 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-26 13:51:04,085 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-26 13:51:04,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-26 13:51:04,111 INFO L200 MainTranslator]: Completed pre-run [2024-10-26 13:51:04,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-26 13:51:04,160 INFO L204 MainTranslator]: Completed translation [2024-10-26 13:51:04,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 01:51:04 WrapperNode [2024-10-26 13:51:04,161 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-26 13:51:04,162 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-26 13:51:04,162 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-26 13:51:04,162 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-26 13:51:04,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 01:51:04" (1/1) ... [2024-10-26 13:51:04,180 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 01:51:04" (1/1) ... [2024-10-26 13:51:04,211 INFO L138 Inliner]: procedures = 25, calls = 36, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 188 [2024-10-26 13:51:04,212 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-26 13:51:04,213 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-26 13:51:04,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-26 13:51:04,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-26 13:51:04,220 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 01:51:04" (1/1) ... [2024-10-26 13:51:04,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 01:51:04" (1/1) ... [2024-10-26 13:51:04,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 01:51:04" (1/1) ... [2024-10-26 13:51:04,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 01:51:04" (1/1) ... [2024-10-26 13:51:04,237 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 01:51:04" (1/1) ... [2024-10-26 13:51:04,241 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 01:51:04" (1/1) ... [2024-10-26 13:51:04,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 01:51:04" (1/1) ... [2024-10-26 13:51:04,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 01:51:04" (1/1) ... [2024-10-26 13:51:04,246 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-26 13:51:04,246 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-26 13:51:04,246 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-26 13:51:04,246 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-26 13:51:04,247 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 01:51:04" (1/1) ... [2024-10-26 13:51:04,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-26 13:51:04,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-26 13:51:04,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-10-26 13:51:04,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-10-26 13:51:04,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-26 13:51:04,309 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-26 13:51:04,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-26 13:51:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-26 13:51:04,310 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-26 13:51:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-10-26 13:51:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-26 13:51:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-26 13:51:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-26 13:51:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-10-26 13:51:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-26 13:51:04,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-26 13:51:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-10-26 13:51:04,312 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-26 13:51:04,396 INFO L238 CfgBuilder]: Building ICFG [2024-10-26 13:51:04,398 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-26 13:51:04,869 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-26 13:51:04,870 INFO L287 CfgBuilder]: Performing block encoding [2024-10-26 13:51:05,220 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-26 13:51:05,220 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-26 13:51:05,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 01:51:05 BoogieIcfgContainer [2024-10-26 13:51:05,220 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-26 13:51:05,222 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-26 13:51:05,223 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-26 13:51:05,225 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-26 13:51:05,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 01:51:03" (1/3) ... [2024-10-26 13:51:05,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549c0eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 01:51:05, skipping insertion in model container [2024-10-26 13:51:05,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 01:51:04" (2/3) ... [2024-10-26 13:51:05,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549c0eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 01:51:05, skipping insertion in model container [2024-10-26 13:51:05,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 01:51:05" (3/3) ... [2024-10-26 13:51:05,229 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2024-10-26 13:51:05,241 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-26 13:51:05,241 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-10-26 13:51:05,242 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-26 13:51:05,332 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-26 13:51:05,367 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-26 13:51:05,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-26 13:51:05,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-26 13:51:05,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-26 13:51:05,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-10-26 13:51:05,405 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-26 13:51:05,417 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thread2Thread1of1ForFork1 ======== [2024-10-26 13:51:05,424 INFO L333 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@62cb8f87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-26 13:51:05,424 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-26 13:51:07,120 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:07,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:07,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2009019648, now seen corresponding path program 1 times [2024-10-26 13:51:07,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:07,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330069444] [2024-10-26 13:51:07,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-26 13:51:07,134 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 [2024-10-26 13:51:07,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:07,156 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:07,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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 [2024-10-26 13:51:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-26 13:51:07,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-26 13:51:07,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:07,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-26 13:51:07,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:51:07,298 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-26 13:51:07,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:51:07,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330069444] [2024-10-26 13:51:07,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330069444] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-26 13:51:07,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-26 13:51:07,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-26 13:51:07,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568183158] [2024-10-26 13:51:07,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-26 13:51:07,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-26 13:51:07,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:51:07,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-26 13:51:07,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-26 13:51:07,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:07,344 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:51:07,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:51:07,344 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:09,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:09,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-26 13:51:09,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:09,389 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:09,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:09,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2009019647, now seen corresponding path program 1 times [2024-10-26 13:51:09,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:09,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45811690] [2024-10-26 13:51:09,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-26 13:51:09,391 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 [2024-10-26 13:51:09,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:09,392 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:09,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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 [2024-10-26 13:51:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-26 13:51:09,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-26 13:51:09,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:09,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-26 13:51:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:51:09,570 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-26 13:51:09,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:51:09,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45811690] [2024-10-26 13:51:09,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45811690] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-26 13:51:09,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-26 13:51:09,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-26 13:51:09,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259484133] [2024-10-26 13:51:09,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-26 13:51:09,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-26 13:51:09,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:51:09,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-26 13:51:09,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-26 13:51:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:09,574 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:51:09,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:51:09,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:09,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:10,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:10,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:10,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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 [2024-10-26 13:51:10,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:10,464 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:10,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:10,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2009019642, now seen corresponding path program 1 times [2024-10-26 13:51:10,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:10,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682279171] [2024-10-26 13:51:10,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-26 13:51:10,465 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 [2024-10-26 13:51:10,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:10,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:10,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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 [2024-10-26 13:51:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-26 13:51:10,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-26 13:51:10,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:51:10,603 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-26 13:51:10,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:51:10,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682279171] [2024-10-26 13:51:10,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682279171] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-26 13:51:10,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-26 13:51:10,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-26 13:51:10,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803118616] [2024-10-26 13:51:10,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-26 13:51:10,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-26 13:51:10,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:51:10,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-26 13:51:10,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-26 13:51:10,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:10,606 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:51:10,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:51:10,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:10,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:10,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:10,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:10,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:10,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:10,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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 [2024-10-26 13:51:10,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:10,896 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:10,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:10,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1373405648, now seen corresponding path program 1 times [2024-10-26 13:51:10,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:10,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544032816] [2024-10-26 13:51:10,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-26 13:51:10,897 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 [2024-10-26 13:51:10,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:10,900 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:10,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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 [2024-10-26 13:51:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-26 13:51:10,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-26 13:51:10,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-26 13:51:11,032 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-26 13:51:11,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:51:11,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544032816] [2024-10-26 13:51:11,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544032816] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-26 13:51:11,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-26 13:51:11,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-26 13:51:11,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433813801] [2024-10-26 13:51:11,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-26 13:51:11,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-26 13:51:11,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:51:11,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-26 13:51:11,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-26 13:51:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:11,034 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:51:11,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:51:11,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:11,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:11,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:11,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:12,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:12,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:12,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:12,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:12,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-26 13:51:12,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:12,226 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:12,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:12,227 INFO L85 PathProgramCache]: Analyzing trace with hash 722423349, now seen corresponding path program 1 times [2024-10-26 13:51:12,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:12,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971150290] [2024-10-26 13:51:12,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-26 13:51:12,228 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 [2024-10-26 13:51:12,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:12,229 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:12,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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 [2024-10-26 13:51:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-26 13:51:12,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-26 13:51:12,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:12,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-26 13:51:12,350 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-26 13:51:12,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-26 13:51:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-26 13:51:12,371 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-26 13:51:12,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:51:12,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971150290] [2024-10-26 13:51:12,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971150290] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-26 13:51:12,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-26 13:51:12,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-26 13:51:12,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725813066] [2024-10-26 13:51:12,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-26 13:51:12,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-26 13:51:12,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:51:12,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-26 13:51:12,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-26 13:51:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:12,373 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:51:12,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:51:12,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:12,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:12,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:12,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:12,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:12,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:12,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:12,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:12,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:12,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:12,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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 [2024-10-26 13:51:13,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:13,011 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:13,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:13,012 INFO L85 PathProgramCache]: Analyzing trace with hash 722423350, now seen corresponding path program 1 times [2024-10-26 13:51:13,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:13,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211937299] [2024-10-26 13:51:13,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-26 13:51:13,012 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 [2024-10-26 13:51:13,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:13,013 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:13,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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 [2024-10-26 13:51:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-26 13:51:13,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-26 13:51:13,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:13,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-26 13:51:13,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-26 13:51:13,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-26 13:51:13,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-26 13:51:13,231 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-26 13:51:13,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-26 13:51:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-26 13:51:13,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-26 13:51:13,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 285 treesize of output 75 [2024-10-26 13:51:13,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-10-26 13:51:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-26 13:51:14,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:51:14,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211937299] [2024-10-26 13:51:14,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211937299] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-26 13:51:14,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-26 13:51:14,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-26 13:51:14,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951437219] [2024-10-26 13:51:14,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-26 13:51:14,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-26 13:51:14,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:51:14,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-26 13:51:14,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-26 13:51:14,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:14,897 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:51:14,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:51:14,897 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:14,897 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:14,897 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:14,897 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:14,897 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:14,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:17,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:17,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:17,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:17,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:17,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:17,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:51:17,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-26 13:51:17,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:17,394 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:17,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:17,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1738510651, now seen corresponding path program 2 times [2024-10-26 13:51:17,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:17,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689333550] [2024-10-26 13:51:17,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-26 13:51:17,395 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 [2024-10-26 13:51:17,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:17,396 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:17,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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 [2024-10-26 13:51:17,467 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-26 13:51:17,467 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-26 13:51:17,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-26 13:51:17,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:17,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-26 13:51:17,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-26 13:51:17,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-26 13:51:17,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-26 13:51:17,607 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-26 13:51:17,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-26 13:51:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-26 13:51:17,692 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-26 13:51:17,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:51:17,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689333550] [2024-10-26 13:51:17,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689333550] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-26 13:51:17,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-26 13:51:17,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-26 13:51:17,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469540191] [2024-10-26 13:51:17,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-26 13:51:17,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-26 13:51:17,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:51:17,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-26 13:51:17,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-26 13:51:17,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:17,695 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:51:17,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:51:17,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:17,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:17,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:17,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:17,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:17,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:51:17,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:17,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:17,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:17,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:17,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:17,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:17,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:51:17,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:17,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-26 13:51:18,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:18,084 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:18,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:18,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1040604569, now seen corresponding path program 1 times [2024-10-26 13:51:18,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:18,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58844756] [2024-10-26 13:51:18,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-26 13:51:18,085 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 [2024-10-26 13:51:18,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:18,086 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:18,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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 [2024-10-26 13:51:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-26 13:51:18,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-26 13:51:18,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:18,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-26 13:51:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-26 13:51:18,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-26 13:51:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-26 13:51:18,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:51:18,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58844756] [2024-10-26 13:51:18,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58844756] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-26 13:51:18,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-26 13:51:18,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-10-26 13:51:18,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434404881] [2024-10-26 13:51:18,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-26 13:51:18,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-26 13:51:18,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:51:18,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-26 13:51:18,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-26 13:51:18,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:18,905 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:51:18,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:51:18,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:18,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:18,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:18,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:18,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:18,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:51:18,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:18,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:51:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:19,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:51:19,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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 [2024-10-26 13:51:19,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:19,733 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:19,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:19,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1335903909, now seen corresponding path program 2 times [2024-10-26 13:51:19,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:19,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877600183] [2024-10-26 13:51:19,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-26 13:51:19,734 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 [2024-10-26 13:51:19,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:19,735 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:19,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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 [2024-10-26 13:51:19,796 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-26 13:51:19,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-26 13:51:19,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-26 13:51:19,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:19,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-26 13:51:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-26 13:51:19,931 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-26 13:51:19,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:51:19,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877600183] [2024-10-26 13:51:19,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877600183] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-26 13:51:19,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-26 13:51:19,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-26 13:51:19,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133916629] [2024-10-26 13:51:19,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-26 13:51:19,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-26 13:51:19,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:51:19,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-26 13:51:19,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-26 13:51:19,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:19,932 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:51:19,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:51:19,932 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:19,932 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:19,932 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:19,932 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:19,932 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:19,932 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:51:19,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:19,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:51:19,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:38,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:51:43,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-26 13:51:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:51:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:43,710 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2024-10-26 13:51:43,710 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2024-10-26 13:51:43,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2024-10-26 13:51:43,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2024-10-26 13:51:43,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2024-10-26 13:51:43,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2024-10-26 13:51:43,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2024-10-26 13:51:43,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2024-10-26 13:51:43,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 10 remaining) [2024-10-26 13:51:43,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 10 remaining) [2024-10-26 13:51:43,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-26 13:51:43,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:43,920 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-10-26 13:51:43,921 INFO L312 ceAbstractionStarter]: Result for error location thread2Thread1of1ForFork1 was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/3) [2024-10-26 13:51:43,924 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-26 13:51:43,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-26 13:51:43,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-26 13:51:43,926 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-26 13:51:43,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (12)] Waiting until timeout for monitored process [2024-10-26 13:51:43,930 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-26 13:51:43,930 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thread1Thread1of1ForFork0 ======== [2024-10-26 13:51:43,931 INFO L333 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@62cb8f87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-26 13:51:43,931 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-26 13:51:45,329 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:45,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:45,329 INFO L85 PathProgramCache]: Analyzing trace with hash -185297963, now seen corresponding path program 1 times [2024-10-26 13:51:45,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:45,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904313117] [2024-10-26 13:51:45,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-26 13:51:45,330 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 [2024-10-26 13:51:45,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:45,332 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:45,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-26 13:51:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-26 13:51:45,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-26 13:51:45,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:45,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:51:45,419 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-26 13:51:45,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:51:45,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904313117] [2024-10-26 13:51:45,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904313117] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-26 13:51:45,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-26 13:51:45,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-26 13:51:45,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678949794] [2024-10-26 13:51:45,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-26 13:51:45,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-26 13:51:45,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:51:45,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-26 13:51:45,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-26 13:51:45,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:45,421 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:51:45,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:51:45,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:45,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:45,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-26 13:51:46,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:46,155 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:46,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:46,155 INFO L85 PathProgramCache]: Analyzing trace with hash 460009050, now seen corresponding path program 1 times [2024-10-26 13:51:46,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:46,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732625322] [2024-10-26 13:51:46,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-26 13:51:46,156 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 [2024-10-26 13:51:46,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:46,157 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:46,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-26 13:51:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-26 13:51:46,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-26 13:51:46,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:46,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-26 13:51:46,229 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-26 13:51:46,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-26 13:51:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-26 13:51:46,258 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-26 13:51:46,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:51:46,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732625322] [2024-10-26 13:51:46,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732625322] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-26 13:51:46,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-26 13:51:46,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-26 13:51:46,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381133828] [2024-10-26 13:51:46,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-26 13:51:46,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-26 13:51:46,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:51:46,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-26 13:51:46,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-26 13:51:46,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:46,259 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:51:46,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:51:46,259 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:46,259 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:47,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:47,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:47,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-26 13:51:47,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:47,248 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:47,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:47,248 INFO L85 PathProgramCache]: Analyzing trace with hash 460009051, now seen corresponding path program 1 times [2024-10-26 13:51:47,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:47,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364938097] [2024-10-26 13:51:47,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-26 13:51:47,249 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 [2024-10-26 13:51:47,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:47,253 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:47,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-26 13:51:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-26 13:51:47,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-26 13:51:47,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:47,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-26 13:51:47,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-26 13:51:47,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-26 13:51:47,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-26 13:51:47,446 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-26 13:51:47,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-26 13:51:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:51:47,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-26 13:51:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:51:47,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:51:47,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364938097] [2024-10-26 13:51:47,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364938097] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-26 13:51:47,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-26 13:51:47,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-26 13:51:47,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458396383] [2024-10-26 13:51:47,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-26 13:51:47,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-26 13:51:47,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:51:47,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-26 13:51:47,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-26 13:51:47,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:47,944 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:51:47,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:51:47,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:47,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:47,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:48,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:48,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:48,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-26 13:51:48,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2024-10-26 13:51:48,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:48,935 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:48,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:48,935 INFO L85 PathProgramCache]: Analyzing trace with hash -322376086, now seen corresponding path program 2 times [2024-10-26 13:51:48,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:48,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829973584] [2024-10-26 13:51:48,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-26 13:51:48,936 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 [2024-10-26 13:51:48,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:48,937 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:48,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-26 13:51:48,989 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-26 13:51:48,989 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-26 13:51:48,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-26 13:51:48,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:49,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-26 13:51:49,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-26 13:51:49,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-26 13:51:49,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-26 13:51:49,164 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-26 13:51:49,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-26 13:51:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-26 13:51:49,228 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-26 13:51:49,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:51:49,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829973584] [2024-10-26 13:51:49,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829973584] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-26 13:51:49,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-26 13:51:49,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-26 13:51:49,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767394180] [2024-10-26 13:51:49,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-26 13:51:49,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-26 13:51:49,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:51:49,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-26 13:51:49,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-26 13:51:49,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:49,229 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:51:49,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:51:49,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:49,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:49,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-10-26 13:51:49,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:49,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:49,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-26 13:51:49,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:49,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-26 13:51:49,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:49,489 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:49,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:49,490 INFO L85 PathProgramCache]: Analyzing trace with hash -322376081, now seen corresponding path program 1 times [2024-10-26 13:51:49,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:49,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719644905] [2024-10-26 13:51:49,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-26 13:51:49,490 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 [2024-10-26 13:51:49,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:49,493 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:49,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-26 13:51:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-26 13:51:49,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-26 13:51:49,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:49,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-26 13:51:49,582 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-26 13:51:49,582 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-26 13:51:49,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:51:49,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719644905] [2024-10-26 13:51:49,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719644905] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-26 13:51:49,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-26 13:51:49,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-26 13:51:49,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252653538] [2024-10-26 13:51:49,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-26 13:51:49,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-26 13:51:49,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:51:49,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-26 13:51:49,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-26 13:51:49,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:49,584 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:51:49,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:51:49,584 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:49,584 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:49,584 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-10-26 13:51:49,584 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:49,584 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:50,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:50,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:50,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-26 13:51:50,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:50,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:50,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2024-10-26 13:51:50,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:50,262 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:50,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:50,262 INFO L85 PathProgramCache]: Analyzing trace with hash -322376080, now seen corresponding path program 1 times [2024-10-26 13:51:50,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:50,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551704050] [2024-10-26 13:51:50,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-26 13:51:50,262 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 [2024-10-26 13:51:50,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:50,263 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:50,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-10-26 13:51:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-26 13:51:50,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-26 13:51:50,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-26 13:51:50,371 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-26 13:51:50,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:51:50,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551704050] [2024-10-26 13:51:50,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551704050] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-26 13:51:50,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-26 13:51:50,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-26 13:51:50,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261289171] [2024-10-26 13:51:50,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-26 13:51:50,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-26 13:51:50,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:51:50,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-26 13:51:50,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-26 13:51:50,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:50,373 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:51:50,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:51:50,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:50,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:50,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-10-26 13:51:50,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:50,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:50,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:50,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:50,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:50,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-26 13:51:50,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:50,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:50,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:50,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-10-26 13:51:51,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:51,032 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:51,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:51,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1669730074, now seen corresponding path program 1 times [2024-10-26 13:51:51,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:51,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503523181] [2024-10-26 13:51:51,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-26 13:51:51,033 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 [2024-10-26 13:51:51,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:51,034 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:51,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-10-26 13:51:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-26 13:51:51,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-26 13:51:51,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:51,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-26 13:51:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-26 13:51:51,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-26 13:51:51,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 285 treesize of output 75 [2024-10-26 13:51:51,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-10-26 13:51:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-26 13:51:52,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:51:52,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503523181] [2024-10-26 13:51:52,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503523181] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-26 13:51:52,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-26 13:51:52,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-10-26 13:51:52,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053011612] [2024-10-26 13:51:52,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-26 13:51:52,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-26 13:51:52,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:51:52,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-26 13:51:52,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-26 13:51:52,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:52,042 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:51:52,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:51:52,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:52,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:52,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-10-26 13:51:52,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:52,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:52,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:52,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-26 13:51:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:53,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:51:53,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2024-10-26 13:51:53,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:53,479 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:53,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:53,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1498341912, now seen corresponding path program 2 times [2024-10-26 13:51:53,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:53,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158637595] [2024-10-26 13:51:53,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-26 13:51:53,480 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 [2024-10-26 13:51:53,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:53,482 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:53,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-10-26 13:51:53,555 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-26 13:51:53,555 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-26 13:51:53,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-26 13:51:53,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:53,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-26 13:51:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-26 13:51:53,653 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-26 13:51:53,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:51:53,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158637595] [2024-10-26 13:51:53,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158637595] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-26 13:51:53,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-26 13:51:53,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-26 13:51:53,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59050010] [2024-10-26 13:51:53,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-26 13:51:53,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-26 13:51:53,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:51:53,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-26 13:51:53,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-26 13:51:53,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:53,654 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:51:53,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:51:53,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:53,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:53,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-10-26 13:51:53,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:53,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:53,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:53,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:51:53,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:51:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:51:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-26 13:51:53,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:53,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:53,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:53,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:51:53,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:51:53,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2024-10-26 13:51:54,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:54,012 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:51:54,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:51:54,012 INFO L85 PathProgramCache]: Analyzing trace with hash -490435785, now seen corresponding path program 1 times [2024-10-26 13:51:54,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:51:54,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439847591] [2024-10-26 13:51:54,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-26 13:51:54,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:51:54,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:51:54,014 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:51:54,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-10-26 13:51:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-26 13:51:54,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-26 13:51:54,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:51:54,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-26 13:51:54,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-26 13:51:54,463 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-26 13:51:54,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2024-10-26 13:51:54,492 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-26 13:51:54,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-26 13:51:55,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-10-26 13:51:55,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 28 [2024-10-26 13:51:55,519 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:51:55,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-26 13:51:55,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 72 [2024-10-26 13:51:55,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-10-26 13:52:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:52:07,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:52:07,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439847591] [2024-10-26 13:52:07,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439847591] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-26 13:52:07,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-26 13:52:07,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-26 13:52:07,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509636345] [2024-10-26 13:52:07,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-26 13:52:07,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-26 13:52:07,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:52:07,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-26 13:52:07,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2024-10-26 13:52:07,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:52:07,053 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:52:07,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:52:07,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:52:07,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:52:07,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-10-26 13:52:07,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:52:07,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:52:07,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:52:07,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:52:07,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:52:07,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:53:03,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:53:05,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:53:09,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:53:12,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:53:12,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:53:12,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-26 13:53:12,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:53:12,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:53:12,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:53:12,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:53:12,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:53:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-26 13:53:12,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2024-10-26 13:53:12,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:53:12,691 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-26 13:53:12,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:53:12,692 INFO L85 PathProgramCache]: Analyzing trace with hash 711764505, now seen corresponding path program 2 times [2024-10-26 13:53:12,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:53:12,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186413700] [2024-10-26 13:53:12,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-26 13:53:12,692 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 [2024-10-26 13:53:12,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:53:12,693 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:53:12,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-10-26 13:53:12,766 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-26 13:53:12,767 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-26 13:53:12,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-26 13:53:12,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:53:12,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-26 13:53:12,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-26 13:53:13,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-26 13:53:13,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-26 13:53:13,173 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-26 13:53:13,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-26 13:53:13,380 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-10-26 13:53:13,380 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-26 13:53:13,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:53:13,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186413700] [2024-10-26 13:53:13,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186413700] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-26 13:53:13,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-26 13:53:13,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-26 13:53:13,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078765391] [2024-10-26 13:53:13,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-26 13:53:13,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-26 13:53:13,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:53:13,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-26 13:53:13,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-26 13:53:13,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:53:13,382 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:53:13,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:53:13,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:53:13,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:53:13,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-10-26 13:53:13,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:53:13,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:53:13,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:53:13,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:53:13,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:53:13,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2024-10-26 13:53:13,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:53:25,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:53:27,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:53:29,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:53:45,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:54:11,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-26 13:54:14,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-26 13:54:15,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-26 13:54:17,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-26 13:54:24,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:54:27,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:54:38,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:54:40,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:54:43,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:54:45,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:54:47,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:55:00,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:55:02,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:55:04,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-26 13:55:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:55:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-26 13:55:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-26 13:55:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:55:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:55:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:55:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:55:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:55:05,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-26 13:55:05,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:55:05,764 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2024-10-26 13:55:05,764 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2024-10-26 13:55:05,764 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2024-10-26 13:55:05,764 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2024-10-26 13:55:05,764 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2024-10-26 13:55:05,764 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2024-10-26 13:55:05,764 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2024-10-26 13:55:05,764 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2024-10-26 13:55:05,764 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 10 remaining) [2024-10-26 13:55:05,764 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 10 remaining) [2024-10-26 13:55:05,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2024-10-26 13:55:05,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:55:05,970 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1] [2024-10-26 13:55:05,970 INFO L312 ceAbstractionStarter]: Result for error location thread1Thread1of1ForFork0 was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (2/3) [2024-10-26 13:55:05,971 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-26 13:55:05,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-26 13:55:05,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-26 13:55:05,973 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-26 13:55:05,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (23)] Waiting until timeout for monitored process [2024-10-26 13:55:05,977 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-26 13:55:05,977 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-26 13:55:05,978 INFO L333 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@62cb8f87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-26 13:55:05,978 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-26 13:55:05,999 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-26 13:55:05,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:55:05,999 INFO L85 PathProgramCache]: Analyzing trace with hash 664802, now seen corresponding path program 1 times [2024-10-26 13:55:05,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:55:05,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572026694] [2024-10-26 13:55:06,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-26 13:55:06,000 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 [2024-10-26 13:55:06,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:55:06,002 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:55:06,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-10-26 13:55:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-26 13:55:06,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-26 13:55:06,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:55:06,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-26 13:55:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:55:06,074 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-26 13:55:06,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:55:06,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572026694] [2024-10-26 13:55:06,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572026694] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-26 13:55:06,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-26 13:55:06,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-26 13:55:06,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803945675] [2024-10-26 13:55:06,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-26 13:55:06,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-26 13:55:06,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:55:06,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-26 13:55:06,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-26 13:55:06,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:55:06,075 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:55:06,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:55:06,076 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:55:06,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-26 13:55:06,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2024-10-26 13:55:06,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:55:06,311 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-26 13:55:06,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:55:06,311 INFO L85 PathProgramCache]: Analyzing trace with hash 664803, now seen corresponding path program 1 times [2024-10-26 13:55:06,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:55:06,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218679416] [2024-10-26 13:55:06,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-26 13:55:06,312 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 [2024-10-26 13:55:06,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:55:06,313 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:55:06,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-10-26 13:55:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-26 13:55:06,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-26 13:55:06,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:55:06,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-26 13:55:06,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:55:06,451 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-26 13:55:06,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:55:06,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218679416] [2024-10-26 13:55:06,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218679416] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-26 13:55:06,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-26 13:55:06,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-26 13:55:06,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057173463] [2024-10-26 13:55:06,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-26 13:55:06,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-26 13:55:06,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:55:06,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-26 13:55:06,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-26 13:55:06,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:55:06,452 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:55:06,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:55:06,453 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-26 13:55:06,453 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:55:06,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-26 13:55:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:55:06,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2024-10-26 13:55:06,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:55:06,743 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-26 13:55:06,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:55:06,743 INFO L85 PathProgramCache]: Analyzing trace with hash 638896616, now seen corresponding path program 1 times [2024-10-26 13:55:06,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:55:06,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639710723] [2024-10-26 13:55:06,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-26 13:55:06,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:55:06,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:55:06,745 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:55:06,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2024-10-26 13:55:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-26 13:55:06,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-26 13:55:06,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:55:06,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-26 13:55:06,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:55:06,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-26 13:55:07,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:55:07,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:55:07,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639710723] [2024-10-26 13:55:07,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639710723] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-26 13:55:07,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-26 13:55:07,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-26 13:55:07,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595888868] [2024-10-26 13:55:07,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-26 13:55:07,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-26 13:55:07,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:55:07,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-26 13:55:07,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-26 13:55:07,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:55:07,287 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:55:07,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:55:07,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-26 13:55:07,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:55:07,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:55:07,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-26 13:55:07,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:55:07,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:55:07,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2024-10-26 13:55:07,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:55:07,839 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-26 13:55:07,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:55:07,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2109401463, now seen corresponding path program 2 times [2024-10-26 13:55:07,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:55:07,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188293536] [2024-10-26 13:55:07,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-26 13:55:07,839 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 [2024-10-26 13:55:07,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:55:07,840 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:55:07,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2024-10-26 13:55:07,899 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-26 13:55:07,899 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-26 13:55:07,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-26 13:55:07,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:55:07,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-26 13:55:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:55:08,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-26 13:55:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:55:09,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:55:09,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188293536] [2024-10-26 13:55:09,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188293536] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-26 13:55:09,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-26 13:55:09,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-26 13:55:09,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843676686] [2024-10-26 13:55:09,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-26 13:55:09,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-26 13:55:09,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:55:09,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-26 13:55:09,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-26 13:55:09,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:55:09,149 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:55:09,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:55:09,149 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-26 13:55:09,149 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:55:09,149 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:55:09,149 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:55:11,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-26 13:55:11,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:55:11,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:55:11,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-26 13:55:11,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2024-10-26 13:55:11,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:55:11,990 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-26 13:55:11,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:55:11,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1773591851, now seen corresponding path program 3 times [2024-10-26 13:55:11,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:55:11,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081089664] [2024-10-26 13:55:11,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-26 13:55:11,990 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 [2024-10-26 13:55:11,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:55:11,992 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:55:11,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-10-26 13:55:12,159 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-26 13:55:12,159 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-26 13:55:12,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-26 13:55:12,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:55:12,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-26 13:55:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:55:12,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-26 13:55:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:55:15,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:55:15,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081089664] [2024-10-26 13:55:15,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081089664] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-26 13:55:15,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-26 13:55:15,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-26 13:55:15,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669756886] [2024-10-26 13:55:15,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-26 13:55:15,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-26 13:55:15,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:55:15,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-26 13:55:15,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-26 13:55:15,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:55:15,907 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:55:15,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:55:15,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-26 13:55:15,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:55:15,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:55:15,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2024-10-26 13:55:15,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:55:35,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-26 13:55:35,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:55:35,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:55:35,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-26 13:55:35,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-26 13:55:35,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2024-10-26 13:55:35,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 13:55:35,827 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-26 13:55:35,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 13:55:35,827 INFO L85 PathProgramCache]: Analyzing trace with hash 601210513, now seen corresponding path program 4 times [2024-10-26 13:55:35,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 13:55:35,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288206538] [2024-10-26 13:55:35,827 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-26 13:55:35,827 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 [2024-10-26 13:55:35,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 13:55:35,829 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 13:55:35,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2024-10-26 13:55:36,020 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-26 13:55:36,021 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-26 13:55:36,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-26 13:55:36,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 13:55:36,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-26 13:55:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:55:38,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-26 13:55:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 13:55:49,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 13:55:49,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288206538] [2024-10-26 13:55:49,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288206538] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-26 13:55:49,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-26 13:55:49,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 48 [2024-10-26 13:55:49,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200113778] [2024-10-26 13:55:49,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-26 13:55:49,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-26 13:55:49,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 13:55:49,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-26 13:55:49,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=629, Invalid=1821, Unknown=0, NotChecked=0, Total=2450 [2024-10-26 13:55:49,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:55:49,466 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 13:55:49,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.9183673469387754) internal successors, (94), 49 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 13:55:49,467 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-26 13:55:49,467 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 13:55:49,467 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-10-26 13:55:49,467 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2024-10-26 13:55:49,467 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 46 states. [2024-10-26 13:55:49,467 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 13:56:06,356 WARN L286 SmtUtils]: Spent 10.32s on a formula simplification that was a NOOP. DAG size: 254 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-26 13:56:28,388 WARN L286 SmtUtils]: Spent 20.98s on a formula simplification. DAG size of input: 250 DAG size of output: 249 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-26 13:56:40,729 WARN L286 SmtUtils]: Spent 11.15s on a formula simplification that was a NOOP. DAG size: 243 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-26 13:57:02,728 WARN L286 SmtUtils]: Spent 20.72s on a formula simplification. DAG size of input: 239 DAG size of output: 238 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-26 13:57:14,012 WARN L286 SmtUtils]: Spent 10.01s on a formula simplification that was a NOOP. DAG size: 232 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-26 13:57:32,586 WARN L286 SmtUtils]: Spent 17.36s on a formula simplification. DAG size of input: 228 DAG size of output: 227 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-26 13:57:40,817 WARN L286 SmtUtils]: Spent 7.06s on a formula simplification that was a NOOP. DAG size: 222 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-26 13:57:57,839 WARN L286 SmtUtils]: Spent 15.65s on a formula simplification. DAG size of input: 218 DAG size of output: 217 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-26 13:58:06,652 WARN L286 SmtUtils]: Spent 7.61s on a formula simplification that was a NOOP. DAG size: 211 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-26 13:58:19,127 WARN L286 SmtUtils]: Spent 11.20s on a formula simplification. DAG size of input: 207 DAG size of output: 206 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-26 13:58:25,672 WARN L286 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-26 13:58:38,749 WARN L286 SmtUtils]: Spent 11.81s on a formula simplification. DAG size of input: 196 DAG size of output: 195 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-26 13:58:55,376 WARN L286 SmtUtils]: Spent 9.46s on a formula simplification. DAG size of input: 185 DAG size of output: 184 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-26 13:59:08,533 WARN L286 SmtUtils]: Spent 7.30s on a formula simplification. DAG size of input: 175 DAG size of output: 174 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-26 13:59:21,323 WARN L286 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 164 DAG size of output: 163 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-26 13:59:31,862 WARN L286 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 153 DAG size of output: 152 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-26 14:00:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-26 14:00:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-26 14:00:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-26 14:00:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-26 14:00:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-26 14:00:20,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-10-26 14:00:20,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2024-10-26 14:00:20,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 14:00:20,966 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-26 14:00:20,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-26 14:00:20,966 INFO L85 PathProgramCache]: Analyzing trace with hash -565077495, now seen corresponding path program 5 times [2024-10-26 14:00:20,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-26 14:00:20,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035743016] [2024-10-26 14:00:20,967 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-26 14:00:20,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-26 14:00:20,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-26 14:00:20,969 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -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) [2024-10-26 14:00:20,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2024-10-26 14:00:26,861 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-10-26 14:00:26,862 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-26 14:00:26,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-10-26 14:00:26,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-26 14:00:26,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-26 14:00:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 14:00:33,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-26 14:01:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-26 14:01:15,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-26 14:01:15,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035743016] [2024-10-26 14:01:15,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035743016] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-26 14:01:15,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-26 14:01:15,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 96 [2024-10-26 14:01:15,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493852795] [2024-10-26 14:01:15,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-26 14:01:15,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-10-26 14:01:15,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-26 14:01:15,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-10-26 14:01:15,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2405, Invalid=7101, Unknown=0, NotChecked=0, Total=9506 [2024-10-26 14:01:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-26 14:01:15,791 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-26 14:01:15,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 1.958762886597938) internal successors, (190), 97 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-26 14:01:15,792 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-26 14:01:15,792 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-26 14:01:15,792 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-10-26 14:01:15,792 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2024-10-26 14:01:15,793 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 46 states. [2024-10-26 14:01:15,793 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 94 states. [2024-10-26 14:01:15,793 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-26 14:02:45,841 WARN L286 SmtUtils]: Spent 1.07m on a formula simplification that was a NOOP. DAG size: 512 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-26 14:05:13,427 WARN L286 SmtUtils]: Spent 2.37m on a formula simplification. DAG size of input: 508 DAG size of output: 507 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Killed by 15