./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 18:02:17,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 18:02:17,968 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 18:02:17,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 18:02:17,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 18:02:18,007 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 18:02:18,008 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 18:02:18,008 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 18:02:18,009 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 18:02:18,010 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 18:02:18,010 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 18:02:18,010 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 18:02:18,011 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 18:02:18,012 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 18:02:18,013 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 18:02:18,014 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 18:02:18,014 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 18:02:18,014 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 18:02:18,014 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 18:02:18,015 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 18:02:18,015 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 18:02:18,015 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 18:02:18,016 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 18:02:18,016 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 18:02:18,016 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 18:02:18,016 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 18:02:18,017 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 18:02:18,017 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 18:02:18,017 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 18:02:18,017 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 18:02:18,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 18:02:18,018 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 18:02:18,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 18:02:18,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 18:02:18,019 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 18:02:18,019 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 18:02:18,019 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 18:02:18,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 18:02:18,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 18:02:18,020 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 18:02:18,020 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 18:02:18,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 18:02:18,021 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 [2024-10-11 18:02:18,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 18:02:18,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 18:02:18,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 18:02:18,321 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 18:02:18,322 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 18:02:18,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2024-10-11 18:02:19,773 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 18:02:20,044 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 18:02:20,045 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2024-10-11 18:02:20,062 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a633f2b81/f8b199cad9204059aabb1c4e686d82ff/FLAG678a0dbb5 [2024-10-11 18:02:20,076 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a633f2b81/f8b199cad9204059aabb1c4e686d82ff [2024-10-11 18:02:20,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 18:02:20,081 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 18:02:20,082 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 18:02:20,082 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 18:02:20,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 18:02:20,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:02:20" (1/1) ... [2024-10-11 18:02:20,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26dc623f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:02:20, skipping insertion in model container [2024-10-11 18:02:20,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:02:20" (1/1) ... [2024-10-11 18:02:20,137 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 18:02:20,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:02:20,673 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) [2024-10-11 18:02:20,674 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21cfdb66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:02:20, skipping insertion in model container [2024-10-11 18:02:20,674 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 18:02:20,675 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 18:02:20,676 INFO L158 Benchmark]: Toolchain (without parser) took 594.78ms. Allocated memory is still 157.3MB. Free memory was 108.1MB in the beginning and 90.3MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-11 18:02:20,677 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 66.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 18:02:20,678 INFO L158 Benchmark]: CACSL2BoogieTranslator took 592.47ms. Allocated memory is still 157.3MB. Free memory was 108.1MB in the beginning and 90.3MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-11 18:02:20,680 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 66.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 592.47ms. Allocated memory is still 157.3MB. Free memory was 108.1MB in the beginning and 90.3MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 18:02:22,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 18:02:22,885 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 18:02:22,892 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 18:02:22,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 18:02:22,926 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 18:02:22,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 18:02:22,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 18:02:22,932 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 18:02:22,932 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 18:02:22,933 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 18:02:22,933 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 18:02:22,934 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 18:02:22,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 18:02:22,935 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 18:02:22,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 18:02:22,936 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 18:02:22,936 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 18:02:22,937 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 18:02:22,937 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 18:02:22,937 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 18:02:22,940 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 18:02:22,941 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 18:02:22,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 18:02:22,941 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 18:02:22,942 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 18:02:22,942 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 18:02:22,942 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 18:02:22,942 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 18:02:22,943 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 18:02:22,943 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 18:02:22,943 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 18:02:22,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 18:02:22,944 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 18:02:22,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 18:02:22,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 18:02:22,945 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 18:02:22,945 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 18:02:22,946 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 18:02:22,946 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 18:02:22,946 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 18:02:22,947 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 18:02:22,947 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 18:02:22,947 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 18:02:22,947 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 18:02:22,948 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 [2024-10-11 18:02:23,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 18:02:23,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 18:02:23,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 18:02:23,299 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 18:02:23,300 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 18:02:23,302 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2024-10-11 18:02:24,837 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 18:02:25,128 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 18:02:25,129 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2024-10-11 18:02:25,146 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c6f5218ca/dffa346f7fb443dd90b1029698c0b6e9/FLAG5cde231af [2024-10-11 18:02:25,157 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c6f5218ca/dffa346f7fb443dd90b1029698c0b6e9 [2024-10-11 18:02:25,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 18:02:25,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 18:02:25,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 18:02:25,162 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 18:02:25,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 18:02:25,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:02:25" (1/1) ... [2024-10-11 18:02:25,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4321fb35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:02:25, skipping insertion in model container [2024-10-11 18:02:25,170 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:02:25" (1/1) ... [2024-10-11 18:02:25,225 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 18:02:25,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:02:25,725 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 18:02:25,740 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 18:02:25,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:02:25,819 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 18:02:25,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:02:25,941 INFO L204 MainTranslator]: Completed translation [2024-10-11 18:02:25,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:02:25 WrapperNode [2024-10-11 18:02:25,942 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 18:02:25,943 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 18:02:25,943 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 18:02:25,943 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 18:02:25,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:02:25" (1/1) ... [2024-10-11 18:02:25,984 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:02:25" (1/1) ... [2024-10-11 18:02:26,021 INFO L138 Inliner]: procedures = 179, calls = 145, calls flagged for inlining = 33, calls inlined = 20, statements flattened = 348 [2024-10-11 18:02:26,021 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 18:02:26,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 18:02:26,024 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 18:02:26,024 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 18:02:26,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:02:25" (1/1) ... [2024-10-11 18:02:26,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:02:25" (1/1) ... [2024-10-11 18:02:26,042 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:02:25" (1/1) ... [2024-10-11 18:02:26,107 INFO L175 MemorySlicer]: Split 55 memory accesses to 2 slices as follows [10, 45]. 82 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [8, 2]. The 23 writes are split as follows [0, 23]. [2024-10-11 18:02:26,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:02:25" (1/1) ... [2024-10-11 18:02:26,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:02:25" (1/1) ... [2024-10-11 18:02:26,134 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:02:25" (1/1) ... [2024-10-11 18:02:26,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:02:25" (1/1) ... [2024-10-11 18:02:26,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:02:25" (1/1) ... [2024-10-11 18:02:26,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:02:25" (1/1) ... [2024-10-11 18:02:26,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 18:02:26,163 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 18:02:26,163 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 18:02:26,164 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 18:02:26,164 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:02:25" (1/1) ... [2024-10-11 18:02:26,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 18:02:26,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:02:26,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 18:02:26,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 18:02:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-10-11 18:02:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-10-11 18:02:26,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 18:02:26,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 18:02:26,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2024-10-11 18:02:26,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2024-10-11 18:02:26,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-10-11 18:02:26,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-10-11 18:02:26,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2024-10-11 18:02:26,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2024-10-11 18:02:26,256 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2024-10-11 18:02:26,256 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2024-10-11 18:02:26,257 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2024-10-11 18:02:26,257 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2024-10-11 18:02:26,257 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-10-11 18:02:26,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-10-11 18:02:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-10-11 18:02:26,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-10-11 18:02:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#0 [2024-10-11 18:02:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#1 [2024-10-11 18:02:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2024-10-11 18:02:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2024-10-11 18:02:26,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 18:02:26,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 18:02:26,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2024-10-11 18:02:26,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2024-10-11 18:02:26,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 18:02:26,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 18:02:26,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-11 18:02:26,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4#0 [2024-10-11 18:02:26,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4#1 [2024-10-11 18:02:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 18:02:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-11 18:02:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-10-11 18:02:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-10-11 18:02:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 18:02:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-11 18:02:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-11 18:02:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-10-11 18:02:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-10-11 18:02:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1#0 [2024-10-11 18:02:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1#1 [2024-10-11 18:02:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 18:02:26,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 18:02:26,495 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 18:02:26,497 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 18:02:26,695 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-10-11 18:02:26,834 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-10-11 18:02:27,813 INFO L? ?]: Removed 413 outVars from TransFormulas that were not future-live. [2024-10-11 18:02:27,815 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 18:02:27,938 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 18:02:27,940 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 18:02:27,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:02:27 BoogieIcfgContainer [2024-10-11 18:02:27,940 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 18:02:27,942 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 18:02:27,942 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 18:02:27,946 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 18:02:27,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:02:25" (1/3) ... [2024-10-11 18:02:27,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34aab9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:02:27, skipping insertion in model container [2024-10-11 18:02:27,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:02:25" (2/3) ... [2024-10-11 18:02:27,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34aab9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:02:27, skipping insertion in model container [2024-10-11 18:02:27,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:02:27" (3/3) ... [2024-10-11 18:02:27,950 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test12-1.i [2024-10-11 18:02:27,966 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 18:02:27,967 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 124 error locations. [2024-10-11 18:02:28,031 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 18:02:28,041 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=PETRI_NET, 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;@7a0d3f42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 18:02:28,042 INFO L334 AbstractCegarLoop]: Starting to check reachability of 124 error locations. [2024-10-11 18:02:28,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 274 states, 132 states have (on average 2.121212121212121) internal successors, (280), 255 states have internal predecessors, (280), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-11 18:02:28,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-11 18:02:28,055 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:28,056 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:28,056 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:02:28,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:28,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1801034719, now seen corresponding path program 1 times [2024-10-11 18:02:28,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:02:28,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633933512] [2024-10-11 18:02:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:28,075 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 [2024-10-11 18:02:28,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:02:28,078 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:02:28,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 (2)] Waiting until timeout for monitored process [2024-10-11 18:02:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:28,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 18:02:28,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:28,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:02:28,372 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:02:28,372 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:02:28,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633933512] [2024-10-11 18:02:28,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633933512] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:02:28,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:02:28,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 18:02:28,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811645465] [2024-10-11 18:02:28,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:02:28,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 18:02:28,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:02:28,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 18:02:28,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 18:02:28,413 INFO L87 Difference]: Start difference. First operand has 274 states, 132 states have (on average 2.121212121212121) internal successors, (280), 255 states have internal predecessors, (280), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:02:29,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:29,593 INFO L93 Difference]: Finished difference Result 361 states and 408 transitions. [2024-10-11 18:02:29,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 18:02:29,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-10-11 18:02:29,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:29,610 INFO L225 Difference]: With dead ends: 361 [2024-10-11 18:02:29,611 INFO L226 Difference]: Without dead ends: 359 [2024-10-11 18:02:29,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:02:29,615 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 268 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:29,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 399 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-11 18:02:29,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-10-11 18:02:29,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 296. [2024-10-11 18:02:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 152 states have (on average 2.0921052631578947) internal successors, (318), 273 states have internal predecessors, (318), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2024-10-11 18:02:29,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 354 transitions. [2024-10-11 18:02:29,678 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 354 transitions. Word has length 10 [2024-10-11 18:02:29,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:29,679 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 354 transitions. [2024-10-11 18:02:29,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:02:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 354 transitions. [2024-10-11 18:02:29,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-11 18:02:29,680 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:29,680 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:29,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 (2)] Ended with exit code 0 [2024-10-11 18:02:29,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:29,885 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:02:29,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:29,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1801034720, now seen corresponding path program 1 times [2024-10-11 18:02:29,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:02:29,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024514248] [2024-10-11 18:02:29,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:29,887 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 [2024-10-11 18:02:29,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:02:29,888 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:02:29,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:29,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 18:02:29,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:30,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:02:30,131 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:02:30,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:02:30,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024514248] [2024-10-11 18:02:30,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024514248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:02:30,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:02:30,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 18:02:30,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085951912] [2024-10-11 18:02:30,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:02:30,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 18:02:30,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:02:30,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 18:02:30,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 18:02:30,134 INFO L87 Difference]: Start difference. First operand 296 states and 354 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:02:30,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:30,848 INFO L93 Difference]: Finished difference Result 414 states and 502 transitions. [2024-10-11 18:02:30,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 18:02:30,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-10-11 18:02:30,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:30,851 INFO L225 Difference]: With dead ends: 414 [2024-10-11 18:02:30,852 INFO L226 Difference]: Without dead ends: 414 [2024-10-11 18:02:30,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:02:30,853 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 123 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:30,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 688 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 18:02:30,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-10-11 18:02:30,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 353. [2024-10-11 18:02:30,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 202 states have (on average 2.0544554455445545) internal successors, (415), 322 states have internal predecessors, (415), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (29), 23 states have call predecessors, (29), 22 states have call successors, (29) [2024-10-11 18:02:30,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 466 transitions. [2024-10-11 18:02:30,874 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 466 transitions. Word has length 10 [2024-10-11 18:02:30,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:30,875 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 466 transitions. [2024-10-11 18:02:30,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:02:30,875 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 466 transitions. [2024-10-11 18:02:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-11 18:02:30,876 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:30,876 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:30,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:31,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:31,077 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:02:31,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:31,078 INFO L85 PathProgramCache]: Analyzing trace with hash 913531039, now seen corresponding path program 1 times [2024-10-11 18:02:31,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:02:31,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105454940] [2024-10-11 18:02:31,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:31,079 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 [2024-10-11 18:02:31,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:02:31,082 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:02:31,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:31,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 18:02:31,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:02:31,201 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:02:31,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:02:31,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105454940] [2024-10-11 18:02:31,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105454940] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:02:31,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:02:31,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 18:02:31,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943329602] [2024-10-11 18:02:31,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:02:31,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 18:02:31,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:02:31,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 18:02:31,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:02:31,203 INFO L87 Difference]: Start difference. First operand 353 states and 466 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:02:31,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:31,530 INFO L93 Difference]: Finished difference Result 531 states and 685 transitions. [2024-10-11 18:02:31,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 18:02:31,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-10-11 18:02:31,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:31,534 INFO L225 Difference]: With dead ends: 531 [2024-10-11 18:02:31,534 INFO L226 Difference]: Without dead ends: 531 [2024-10-11 18:02:31,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:02:31,536 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 190 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:31,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1060 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 18:02:31,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2024-10-11 18:02:31,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 344. [2024-10-11 18:02:31,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 193 states have (on average 2.0259067357512954) internal successors, (391), 314 states have internal predecessors, (391), 21 states have call successors, (21), 9 states have call predecessors, (21), 10 states have return successors, (34), 22 states have call predecessors, (34), 21 states have call successors, (34) [2024-10-11 18:02:31,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 446 transitions. [2024-10-11 18:02:31,562 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 446 transitions. Word has length 10 [2024-10-11 18:02:31,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:31,563 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 446 transitions. [2024-10-11 18:02:31,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:02:31,563 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 446 transitions. [2024-10-11 18:02:31,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-11 18:02:31,564 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:31,564 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:31,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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)] Ended with exit code 0 [2024-10-11 18:02:31,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:31,767 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:02:31,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:31,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2494724, now seen corresponding path program 1 times [2024-10-11 18:02:31,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:02:31,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266958613] [2024-10-11 18:02:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:31,769 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 [2024-10-11 18:02:31,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:02:31,771 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:02:31,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:31,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 18:02:31,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:32,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:02:32,016 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:02:32,016 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:02:32,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266958613] [2024-10-11 18:02:32,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266958613] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:02:32,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:02:32,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 18:02:32,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124400508] [2024-10-11 18:02:32,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:02:32,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 18:02:32,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:02:32,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 18:02:32,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:02:32,019 INFO L87 Difference]: Start difference. First operand 344 states and 446 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:02:32,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:32,962 INFO L93 Difference]: Finished difference Result 382 states and 487 transitions. [2024-10-11 18:02:32,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 18:02:32,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-10-11 18:02:32,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:32,965 INFO L225 Difference]: With dead ends: 382 [2024-10-11 18:02:32,965 INFO L226 Difference]: Without dead ends: 382 [2024-10-11 18:02:32,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 18:02:32,966 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 48 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:32,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 762 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-11 18:02:32,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-10-11 18:02:32,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 355. [2024-10-11 18:02:32,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 201 states have (on average 2.0) internal successors, (402), 323 states have internal predecessors, (402), 21 states have call successors, (21), 11 states have call predecessors, (21), 13 states have return successors, (34), 22 states have call predecessors, (34), 21 states have call successors, (34) [2024-10-11 18:02:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 457 transitions. [2024-10-11 18:02:32,981 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 457 transitions. Word has length 11 [2024-10-11 18:02:32,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:32,982 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 457 transitions. [2024-10-11 18:02:32,982 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:02:32,982 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 457 transitions. [2024-10-11 18:02:32,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-11 18:02:32,983 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:32,983 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:32,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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)] Ended with exit code 0 [2024-10-11 18:02:33,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:33,184 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:02:33,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:33,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2494723, now seen corresponding path program 1 times [2024-10-11 18:02:33,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:02:33,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605085068] [2024-10-11 18:02:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:33,185 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 [2024-10-11 18:02:33,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:02:33,188 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:02:33,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:33,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 18:02:33,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:33,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:02:33,499 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:02:33,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:02:33,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605085068] [2024-10-11 18:02:33,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605085068] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:02:33,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:02:33,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 18:02:33,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273814650] [2024-10-11 18:02:33,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:02:33,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 18:02:33,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:02:33,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 18:02:33,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:02:33,502 INFO L87 Difference]: Start difference. First operand 355 states and 457 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:02:34,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:34,410 INFO L93 Difference]: Finished difference Result 372 states and 470 transitions. [2024-10-11 18:02:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 18:02:34,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-10-11 18:02:34,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:34,413 INFO L225 Difference]: With dead ends: 372 [2024-10-11 18:02:34,413 INFO L226 Difference]: Without dead ends: 372 [2024-10-11 18:02:34,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 18:02:34,414 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 25 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:34,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 860 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 18:02:34,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-10-11 18:02:34,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 362. [2024-10-11 18:02:34,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 208 states have (on average 1.9855769230769231) internal successors, (413), 330 states have internal predecessors, (413), 21 states have call successors, (21), 11 states have call predecessors, (21), 13 states have return successors, (34), 22 states have call predecessors, (34), 21 states have call successors, (34) [2024-10-11 18:02:34,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 468 transitions. [2024-10-11 18:02:34,433 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 468 transitions. Word has length 11 [2024-10-11 18:02:34,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:34,433 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 468 transitions. [2024-10-11 18:02:34,433 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:02:34,434 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 468 transitions. [2024-10-11 18:02:34,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-11 18:02:34,434 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:34,434 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:34,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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)] Forceful destruction successful, exit code 0 [2024-10-11 18:02:34,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:34,640 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr103ASSERT_VIOLATIONMEMORY_LEAK === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:02:34,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:34,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1302258625, now seen corresponding path program 1 times [2024-10-11 18:02:34,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:02:34,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402618114] [2024-10-11 18:02:34,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:34,641 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 [2024-10-11 18:02:34,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:02:34,642 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:02:34,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:34,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 18:02:34,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:34,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:02:34,756 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:02:34,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:02:34,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402618114] [2024-10-11 18:02:34,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402618114] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:02:34,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:02:34,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 18:02:34,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847063979] [2024-10-11 18:02:34,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:02:34,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 18:02:34,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:02:34,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 18:02:34,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 18:02:34,758 INFO L87 Difference]: Start difference. First operand 362 states and 468 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:02:35,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:35,726 INFO L93 Difference]: Finished difference Result 399 states and 492 transitions. [2024-10-11 18:02:35,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 18:02:35,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-10-11 18:02:35,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:35,730 INFO L225 Difference]: With dead ends: 399 [2024-10-11 18:02:35,730 INFO L226 Difference]: Without dead ends: 393 [2024-10-11 18:02:35,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 18:02:35,731 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 84 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:35,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 620 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-11 18:02:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-10-11 18:02:35,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 361. [2024-10-11 18:02:35,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 206 states have (on average 1.9902912621359223) internal successors, (410), 329 states have internal predecessors, (410), 21 states have call successors, (21), 11 states have call predecessors, (21), 14 states have return successors, (35), 22 states have call predecessors, (35), 21 states have call successors, (35) [2024-10-11 18:02:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 466 transitions. [2024-10-11 18:02:35,746 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 466 transitions. Word has length 14 [2024-10-11 18:02:35,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:35,747 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 466 transitions. [2024-10-11 18:02:35,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:02:35,747 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 466 transitions. [2024-10-11 18:02:35,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-11 18:02:35,748 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:35,748 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:35,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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)] Ended with exit code 0 [2024-10-11 18:02:35,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:35,949 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:02:35,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:35,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1037624663, now seen corresponding path program 1 times [2024-10-11 18:02:35,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:02:35,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982113806] [2024-10-11 18:02:35,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:35,950 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 [2024-10-11 18:02:35,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:02:35,951 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:02:35,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:36,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 18:02:36,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:02:36,075 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:02:36,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:02:36,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982113806] [2024-10-11 18:02:36,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982113806] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:02:36,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:02:36,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 18:02:36,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071806157] [2024-10-11 18:02:36,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:02:36,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 18:02:36,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:02:36,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 18:02:36,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:02:36,080 INFO L87 Difference]: Start difference. First operand 361 states and 466 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:02:36,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:36,357 INFO L93 Difference]: Finished difference Result 301 states and 347 transitions. [2024-10-11 18:02:36,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 18:02:36,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-10-11 18:02:36,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:36,359 INFO L225 Difference]: With dead ends: 301 [2024-10-11 18:02:36,360 INFO L226 Difference]: Without dead ends: 297 [2024-10-11 18:02:36,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:02:36,361 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:36,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1069 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 18:02:36,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-10-11 18:02:36,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2024-10-11 18:02:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 149 states have (on average 2.0201342281879193) internal successors, (301), 271 states have internal predecessors, (301), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (19), 16 states have call predecessors, (19), 16 states have call successors, (19) [2024-10-11 18:02:36,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 336 transitions. [2024-10-11 18:02:36,368 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 336 transitions. Word has length 16 [2024-10-11 18:02:36,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:36,369 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 336 transitions. [2024-10-11 18:02:36,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:02:36,369 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 336 transitions. [2024-10-11 18:02:36,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-11 18:02:36,370 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:36,370 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:36,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:36,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:36,571 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:02:36,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:36,571 INFO L85 PathProgramCache]: Analyzing trace with hash -744221656, now seen corresponding path program 1 times [2024-10-11 18:02:36,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:02:36,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099879558] [2024-10-11 18:02:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:36,572 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 [2024-10-11 18:02:36,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:02:36,573 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:02:36,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:36,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 18:02:36,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 18:02:36,687 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:02:36,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:02:36,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099879558] [2024-10-11 18:02:36,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099879558] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:02:36,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:02:36,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 18:02:36,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042917292] [2024-10-11 18:02:36,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:02:36,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 18:02:36,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:02:36,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 18:02:36,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:02:36,689 INFO L87 Difference]: Start difference. First operand 295 states and 336 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:02:36,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:36,977 INFO L93 Difference]: Finished difference Result 299 states and 345 transitions. [2024-10-11 18:02:36,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 18:02:36,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-10-11 18:02:36,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:36,979 INFO L225 Difference]: With dead ends: 299 [2024-10-11 18:02:36,979 INFO L226 Difference]: Without dead ends: 299 [2024-10-11 18:02:36,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:02:36,980 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:36,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1074 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 18:02:36,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-10-11 18:02:36,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2024-10-11 18:02:36,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 151 states have (on average 2.006622516556291) internal successors, (303), 272 states have internal predecessors, (303), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (19), 17 states have call predecessors, (19), 16 states have call successors, (19) [2024-10-11 18:02:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 338 transitions. [2024-10-11 18:02:36,991 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 338 transitions. Word has length 16 [2024-10-11 18:02:36,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:36,991 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 338 transitions. [2024-10-11 18:02:36,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:02:36,992 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 338 transitions. [2024-10-11 18:02:36,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-11 18:02:36,992 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:36,993 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:36,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:37,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:37,194 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr86ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:02:37,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:37,194 INFO L85 PathProgramCache]: Analyzing trace with hash -744221405, now seen corresponding path program 1 times [2024-10-11 18:02:37,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:02:37,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508860698] [2024-10-11 18:02:37,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:37,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 18:02:37,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:02:37,198 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:02:37,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:37,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 18:02:37,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 18:02:37,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:02:37,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 18:02:37,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:02:37,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508860698] [2024-10-11 18:02:37,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508860698] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:02:37,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:02:37,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2024-10-11 18:02:37,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036861039] [2024-10-11 18:02:37,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:02:37,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 18:02:37,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:02:37,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 18:02:37,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:02:37,353 INFO L87 Difference]: Start difference. First operand 297 states and 338 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:02:37,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:37,640 INFO L93 Difference]: Finished difference Result 296 states and 337 transitions. [2024-10-11 18:02:37,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 18:02:37,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-10-11 18:02:37,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:37,642 INFO L225 Difference]: With dead ends: 296 [2024-10-11 18:02:37,642 INFO L226 Difference]: Without dead ends: 296 [2024-10-11 18:02:37,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:02:37,643 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 187 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:37,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 868 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 18:02:37,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-10-11 18:02:37,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2024-10-11 18:02:37,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 151 states have (on average 2.0) internal successors, (302), 271 states have internal predecessors, (302), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (19), 17 states have call predecessors, (19), 16 states have call successors, (19) [2024-10-11 18:02:37,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 337 transitions. [2024-10-11 18:02:37,650 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 337 transitions. Word has length 16 [2024-10-11 18:02:37,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:37,650 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 337 transitions. [2024-10-11 18:02:37,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:02:37,651 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 337 transitions. [2024-10-11 18:02:37,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-11 18:02:37,651 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:37,651 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:37,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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)] Ended with exit code 0 [2024-10-11 18:02:37,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:37,852 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:02:37,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:37,852 INFO L85 PathProgramCache]: Analyzing trace with hash -772850807, now seen corresponding path program 1 times [2024-10-11 18:02:37,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:02:37,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321663414] [2024-10-11 18:02:37,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:37,853 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 [2024-10-11 18:02:37,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:02:37,856 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:02:37,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:37,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 18:02:37,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:37,951 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 [2024-10-11 18:02:38,026 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#valid)| |ldv_malloc_#res.base| (select |c_#valid| |ldv_malloc_#res.base|)) |c_#valid|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-10-11 18:02:38,079 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 18:02:38,080 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 [2024-10-11 18:02:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-10-11 18:02:38,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:02:39,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:02:39,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:02:39,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321663414] [2024-10-11 18:02:39,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321663414] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:02:39,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:02:39,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2024-10-11 18:02:39,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082985106] [2024-10-11 18:02:39,166 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:02:39,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 18:02:39,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:02:39,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 18:02:39,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2024-10-11 18:02:39,167 INFO L87 Difference]: Start difference. First operand 296 states and 337 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 18:02:40,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:40,569 INFO L93 Difference]: Finished difference Result 328 states and 371 transitions. [2024-10-11 18:02:40,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 18:02:40,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 16 [2024-10-11 18:02:40,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:40,572 INFO L225 Difference]: With dead ends: 328 [2024-10-11 18:02:40,572 INFO L226 Difference]: Without dead ends: 328 [2024-10-11 18:02:40,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2024-10-11 18:02:40,573 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 206 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 351 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:40,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 675 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 695 Invalid, 0 Unknown, 351 Unchecked, 1.3s Time] [2024-10-11 18:02:40,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-10-11 18:02:40,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 296. [2024-10-11 18:02:40,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 154 states have (on average 1.9675324675324675) internal successors, (303), 271 states have internal predecessors, (303), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (19), 17 states have call predecessors, (19), 16 states have call successors, (19) [2024-10-11 18:02:40,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 338 transitions. [2024-10-11 18:02:40,581 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 338 transitions. Word has length 16 [2024-10-11 18:02:40,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:40,581 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 338 transitions. [2024-10-11 18:02:40,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 18:02:40,581 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 338 transitions. [2024-10-11 18:02:40,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-11 18:02:40,582 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:40,582 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:40,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:40,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:40,783 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:02:40,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:40,783 INFO L85 PathProgramCache]: Analyzing trace with hash -772850806, now seen corresponding path program 1 times [2024-10-11 18:02:40,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:02:40,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593022779] [2024-10-11 18:02:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:40,784 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 [2024-10-11 18:02:40,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:02:40,785 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:02:40,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 (12)] Waiting until timeout for monitored process [2024-10-11 18:02:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:40,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 18:02:40,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:40,888 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 [2024-10-11 18:02:40,894 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 6 treesize of output 5 [2024-10-11 18:02:41,008 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-10-11 18:02:41,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 18:02:41,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 18:02:41,051 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 18:02:41,051 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 [2024-10-11 18:02:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-10-11 18:02:41,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:02:41,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:02:41,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593022779] [2024-10-11 18:02:41,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593022779] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:02:41,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1924988302] [2024-10-11 18:02:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:41,252 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-11 18:02:41,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-11 18:02:41,255 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-11 18:02:41,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-10-11 18:02:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:41,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 18:02:41,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:41,403 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 5 [2024-10-11 18:02:41,410 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 [2024-10-11 18:02:41,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 18:02:41,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 18:02:41,521 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 18:02:41,522 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 [2024-10-11 18:02:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-10-11 18:02:41,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:02:41,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1924988302] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:02:41,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:02:41,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-10-11 18:02:41,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554674627] [2024-10-11 18:02:41,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:02:41,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 18:02:41,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:02:41,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 18:02:41,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2024-10-11 18:02:41,708 INFO L87 Difference]: Start difference. First operand 296 states and 338 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:02:44,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:44,600 INFO L93 Difference]: Finished difference Result 569 states and 679 transitions. [2024-10-11 18:02:44,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 18:02:44,601 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-10-11 18:02:44,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:44,603 INFO L225 Difference]: With dead ends: 569 [2024-10-11 18:02:44,603 INFO L226 Difference]: Without dead ends: 569 [2024-10-11 18:02:44,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=105, Unknown=1, NotChecked=20, Total=156 [2024-10-11 18:02:44,604 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 318 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 637 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:44,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 1090 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1563 Invalid, 0 Unknown, 637 Unchecked, 2.8s Time] [2024-10-11 18:02:44,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-10-11 18:02:44,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 308. [2024-10-11 18:02:44,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 164 states have (on average 1.9329268292682926) internal successors, (317), 280 states have internal predecessors, (317), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (29), 20 states have call predecessors, (29), 18 states have call successors, (29) [2024-10-11 18:02:44,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 364 transitions. [2024-10-11 18:02:44,616 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 364 transitions. Word has length 16 [2024-10-11 18:02:44,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:44,616 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 364 transitions. [2024-10-11 18:02:44,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:02:44,616 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 364 transitions. [2024-10-11 18:02:44,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-11 18:02:44,617 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:44,617 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:44,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 (12)] Forceful destruction successful, exit code 0 [2024-10-11 18:02:44,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2024-10-11 18:02:45,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-10-11 18:02:45,018 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr87ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:02:45,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:45,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1596026630, now seen corresponding path program 1 times [2024-10-11 18:02:45,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:02:45,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233061325] [2024-10-11 18:02:45,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:45,019 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 [2024-10-11 18:02:45,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:02:45,020 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:02:45,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:45,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 18:02:45,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:45,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:02:45,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:02:45,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 18:02:45,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:02:45,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233061325] [2024-10-11 18:02:45,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233061325] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:02:45,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:02:45,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2024-10-11 18:02:45,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244137057] [2024-10-11 18:02:45,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:02:45,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 18:02:45,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:02:45,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 18:02:45,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 18:02:45,347 INFO L87 Difference]: Start difference. First operand 308 states and 364 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-11 18:02:45,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:45,953 INFO L93 Difference]: Finished difference Result 307 states and 362 transitions. [2024-10-11 18:02:45,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 18:02:45,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 17 [2024-10-11 18:02:45,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:45,955 INFO L225 Difference]: With dead ends: 307 [2024-10-11 18:02:45,955 INFO L226 Difference]: Without dead ends: 307 [2024-10-11 18:02:45,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-11 18:02:45,956 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 522 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:45,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 918 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 18:02:45,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-10-11 18:02:45,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2024-10-11 18:02:45,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 164 states have (on average 1.920731707317073) internal successors, (315), 279 states have internal predecessors, (315), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (29), 20 states have call predecessors, (29), 18 states have call successors, (29) [2024-10-11 18:02:45,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 362 transitions. [2024-10-11 18:02:45,963 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 362 transitions. Word has length 17 [2024-10-11 18:02:45,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:45,964 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 362 transitions. [2024-10-11 18:02:45,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-11 18:02:45,964 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 362 transitions. [2024-10-11 18:02:45,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-11 18:02:45,964 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:45,964 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:45,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:46,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:46,167 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:02:46,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:46,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1940923672, now seen corresponding path program 1 times [2024-10-11 18:02:46,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:02:46,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050436185] [2024-10-11 18:02:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:46,168 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 [2024-10-11 18:02:46,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:02:46,169 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:02:46,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:46,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 18:02:46,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:46,340 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 18:02:46,340 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 [2024-10-11 18:02:46,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2024-10-11 18:02:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 18:02:46,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:02:46,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:02:46,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050436185] [2024-10-11 18:02:46,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050436185] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:02:46,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1541706198] [2024-10-11 18:02:46,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:46,546 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-11 18:02:46,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-11 18:02:46,548 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-11 18:02:46,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-10-11 18:02:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:46,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 18:02:46,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:46,764 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 18:02:46,764 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 [2024-10-11 18:02:46,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2024-10-11 18:02:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 18:02:46,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:02:46,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1541706198] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:02:46,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:02:46,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2024-10-11 18:02:46,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693888153] [2024-10-11 18:02:46,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:02:46,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 18:02:46,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:02:46,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 18:02:46,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 18:02:46,917 INFO L87 Difference]: Start difference. First operand 307 states and 362 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:02:48,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:48,412 INFO L93 Difference]: Finished difference Result 377 states and 430 transitions. [2024-10-11 18:02:48,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 18:02:48,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-10-11 18:02:48,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:48,415 INFO L225 Difference]: With dead ends: 377 [2024-10-11 18:02:48,415 INFO L226 Difference]: Without dead ends: 377 [2024-10-11 18:02:48,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-11 18:02:48,416 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 361 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:48,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 637 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-11 18:02:48,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-10-11 18:02:48,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 309. [2024-10-11 18:02:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 166 states have (on average 1.9156626506024097) internal successors, (318), 281 states have internal predecessors, (318), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (29), 20 states have call predecessors, (29), 18 states have call successors, (29) [2024-10-11 18:02:48,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 365 transitions. [2024-10-11 18:02:48,426 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 365 transitions. Word has length 20 [2024-10-11 18:02:48,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:48,426 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 365 transitions. [2024-10-11 18:02:48,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:02:48,427 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 365 transitions. [2024-10-11 18:02:48,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-11 18:02:48,427 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:48,427 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:48,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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)] Ended with exit code 0 [2024-10-11 18:02:48,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2024-10-11 18:02:48,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-10-11 18:02:48,828 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:02:48,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:48,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1940923671, now seen corresponding path program 1 times [2024-10-11 18:02:48,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:02:48,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582672170] [2024-10-11 18:02:48,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:48,829 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 [2024-10-11 18:02:48,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:02:48,830 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:02:48,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:02:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:48,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 18:02:48,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:49,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 18:02:49,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 18:02:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:02:49,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:02:53,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:02:53,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582672170] [2024-10-11 18:02:53,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582672170] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:02:53,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1682090814] [2024-10-11 18:02:53,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:53,484 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-11 18:02:53,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-11 18:02:53,485 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-11 18:02:53,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-10-11 18:02:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:53,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 18:02:53,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:53,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 18:02:53,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 18:02:53,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:02:53,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:02:58,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1682090814] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:02:58,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:02:58,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2024-10-11 18:02:58,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880587067] [2024-10-11 18:02:58,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:02:58,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 18:02:58,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:02:58,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 18:02:58,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=62, Unknown=1, NotChecked=0, Total=90 [2024-10-11 18:02:58,185 INFO L87 Difference]: Start difference. First operand 309 states and 365 transitions. Second operand has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:03:02,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 18:03:06,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 18:03:11,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 18:03:15,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 18:03:20,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 18:03:24,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 18:03:24,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:03:24,886 INFO L93 Difference]: Finished difference Result 372 states and 425 transitions. [2024-10-11 18:03:24,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 18:03:24,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-10-11 18:03:24,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:03:24,889 INFO L225 Difference]: With dead ends: 372 [2024-10-11 18:03:24,889 INFO L226 Difference]: Without dead ends: 372 [2024-10-11 18:03:24,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=85, Invalid=154, Unknown=1, NotChecked=0, Total=240 [2024-10-11 18:03:24,890 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 416 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 50 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time [2024-10-11 18:03:24,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 448 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 791 Invalid, 6 Unknown, 0 Unchecked, 26.5s Time] [2024-10-11 18:03:24,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-10-11 18:03:24,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 308. [2024-10-11 18:03:24,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 166 states have (on average 1.9036144578313252) internal successors, (316), 280 states have internal predecessors, (316), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (29), 20 states have call predecessors, (29), 18 states have call successors, (29) [2024-10-11 18:03:24,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 363 transitions. [2024-10-11 18:03:24,906 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 363 transitions. Word has length 20 [2024-10-11 18:03:24,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:03:24,907 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 363 transitions. [2024-10-11 18:03:24,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:03:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 363 transitions. [2024-10-11 18:03:24,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-11 18:03:24,908 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:03:24,908 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:03:24,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2024-10-11 18:03:25,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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)] Ended with exit code 0 [2024-10-11 18:03:25,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:25,312 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:03:25,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:03:25,312 INFO L85 PathProgramCache]: Analyzing trace with hash -39087853, now seen corresponding path program 1 times [2024-10-11 18:03:25,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:03:25,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527080626] [2024-10-11 18:03:25,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:03:25,313 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 [2024-10-11 18:03:25,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:03:25,316 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:03:25,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:03:25,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 18:03:25,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:03:25,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2024-10-11 18:03:25,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 18:03:25,485 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:03:25,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:03:25,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527080626] [2024-10-11 18:03:25,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527080626] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:03:25,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:03:25,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 18:03:25,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002355755] [2024-10-11 18:03:25,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:03:25,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 18:03:25,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:03:25,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 18:03:25,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 18:03:25,487 INFO L87 Difference]: Start difference. First operand 308 states and 363 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:03:26,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:03:26,271 INFO L93 Difference]: Finished difference Result 337 states and 395 transitions. [2024-10-11 18:03:26,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 18:03:26,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-10-11 18:03:26,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:03:26,273 INFO L225 Difference]: With dead ends: 337 [2024-10-11 18:03:26,273 INFO L226 Difference]: Without dead ends: 337 [2024-10-11 18:03:26,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:03:26,274 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 40 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 18:03:26,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 670 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 18:03:26,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-10-11 18:03:26,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 309. [2024-10-11 18:03:26,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 167 states have (on average 1.904191616766467) internal successors, (318), 281 states have internal predecessors, (318), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (29), 20 states have call predecessors, (29), 18 states have call successors, (29) [2024-10-11 18:03:26,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 365 transitions. [2024-10-11 18:03:26,283 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 365 transitions. Word has length 21 [2024-10-11 18:03:26,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:03:26,285 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 365 transitions. [2024-10-11 18:03:26,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:03:26,286 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 365 transitions. [2024-10-11 18:03:26,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-11 18:03:26,287 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:03:26,287 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:03:26,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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)] Ended with exit code 0 [2024-10-11 18:03:26,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:26,488 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:03:26,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:03:26,488 INFO L85 PathProgramCache]: Analyzing trace with hash -39087852, now seen corresponding path program 1 times [2024-10-11 18:03:26,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:03:26,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735487050] [2024-10-11 18:03:26,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:03:26,489 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 [2024-10-11 18:03:26,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:03:26,490 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:03:26,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:03:26,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 18:03:26,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:03:26,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2024-10-11 18:03:26,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 [2024-10-11 18:03:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 18:03:26,916 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:03:26,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:03:26,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735487050] [2024-10-11 18:03:26,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735487050] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:03:26,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:03:26,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 18:03:26,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396014966] [2024-10-11 18:03:26,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:03:26,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 18:03:26,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:03:26,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 18:03:26,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 18:03:26,918 INFO L87 Difference]: Start difference. First operand 309 states and 365 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:03:27,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:03:27,822 INFO L93 Difference]: Finished difference Result 327 states and 384 transitions. [2024-10-11 18:03:27,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 18:03:27,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-10-11 18:03:27,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:03:27,826 INFO L225 Difference]: With dead ends: 327 [2024-10-11 18:03:27,826 INFO L226 Difference]: Without dead ends: 327 [2024-10-11 18:03:27,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:03:27,827 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 29 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 18:03:27,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 687 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 18:03:27,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-10-11 18:03:27,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 309. [2024-10-11 18:03:27,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 167 states have (on average 1.8982035928143712) internal successors, (317), 281 states have internal predecessors, (317), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (29), 20 states have call predecessors, (29), 18 states have call successors, (29) [2024-10-11 18:03:27,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 364 transitions. [2024-10-11 18:03:27,835 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 364 transitions. Word has length 21 [2024-10-11 18:03:27,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:03:27,835 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 364 transitions. [2024-10-11 18:03:27,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:03:27,835 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 364 transitions. [2024-10-11 18:03:27,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 18:03:27,836 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:03:27,836 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:03:27,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:28,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:28,037 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:03:28,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:03:28,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1091395680, now seen corresponding path program 1 times [2024-10-11 18:03:28,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:03:28,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424561842] [2024-10-11 18:03:28,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:03:28,039 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 [2024-10-11 18:03:28,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:03:28,042 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:03:28,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:03:28,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 18:03:28,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:03:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 18:03:28,513 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:03:28,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:03:28,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424561842] [2024-10-11 18:03:28,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424561842] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:03:28,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:03:28,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 18:03:28,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591705705] [2024-10-11 18:03:28,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:03:28,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 18:03:28,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:03:28,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 18:03:28,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 18:03:28,514 INFO L87 Difference]: Start difference. First operand 309 states and 364 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:03:29,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:03:29,105 INFO L93 Difference]: Finished difference Result 313 states and 367 transitions. [2024-10-11 18:03:29,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 18:03:29,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2024-10-11 18:03:29,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:03:29,108 INFO L225 Difference]: With dead ends: 313 [2024-10-11 18:03:29,108 INFO L226 Difference]: Without dead ends: 313 [2024-10-11 18:03:29,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:03:29,109 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 6 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 18:03:29,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 752 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 18:03:29,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-10-11 18:03:29,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 310. [2024-10-11 18:03:29,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 168 states have (on average 1.8928571428571428) internal successors, (318), 282 states have internal predecessors, (318), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (29), 20 states have call predecessors, (29), 18 states have call successors, (29) [2024-10-11 18:03:29,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 365 transitions. [2024-10-11 18:03:29,119 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 365 transitions. Word has length 23 [2024-10-11 18:03:29,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:03:29,120 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 365 transitions. [2024-10-11 18:03:29,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:03:29,120 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 365 transitions. [2024-10-11 18:03:29,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 18:03:29,121 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:03:29,121 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:03:29,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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)] Ended with exit code 0 [2024-10-11 18:03:29,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:29,323 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr83ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:03:29,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:03:29,323 INFO L85 PathProgramCache]: Analyzing trace with hash 728089762, now seen corresponding path program 1 times [2024-10-11 18:03:29,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:03:29,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772458977] [2024-10-11 18:03:29,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:03:29,324 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 [2024-10-11 18:03:29,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:03:29,325 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:03:29,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:03:29,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 18:03:29,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:03:29,448 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 18:03:29,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:03:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 18:03:29,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:03:29,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772458977] [2024-10-11 18:03:29,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772458977] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:03:29,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:03:29,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2024-10-11 18:03:29,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623392164] [2024-10-11 18:03:29,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:03:29,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 18:03:29,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:03:29,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 18:03:29,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:03:29,506 INFO L87 Difference]: Start difference. First operand 310 states and 365 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 18:03:29,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:03:29,857 INFO L93 Difference]: Finished difference Result 309 states and 364 transitions. [2024-10-11 18:03:29,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 18:03:29,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-10-11 18:03:29,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:03:29,859 INFO L225 Difference]: With dead ends: 309 [2024-10-11 18:03:29,859 INFO L226 Difference]: Without dead ends: 309 [2024-10-11 18:03:29,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:03:29,860 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 175 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 18:03:29,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 862 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 18:03:29,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-10-11 18:03:29,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2024-10-11 18:03:29,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 168 states have (on average 1.8869047619047619) internal successors, (317), 281 states have internal predecessors, (317), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (29), 20 states have call predecessors, (29), 18 states have call successors, (29) [2024-10-11 18:03:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 364 transitions. [2024-10-11 18:03:29,869 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 364 transitions. Word has length 24 [2024-10-11 18:03:29,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:03:29,870 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 364 transitions. [2024-10-11 18:03:29,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 18:03:29,870 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 364 transitions. [2024-10-11 18:03:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 18:03:29,872 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:03:29,872 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:03:29,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:30,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:30,073 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:03:30,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:03:30,074 INFO L85 PathProgramCache]: Analyzing trace with hash 728089528, now seen corresponding path program 1 times [2024-10-11 18:03:30,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:03:30,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269147831] [2024-10-11 18:03:30,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:03:30,075 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 [2024-10-11 18:03:30,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:03:30,078 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:03:30,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 (23)] Waiting until timeout for monitored process [2024-10-11 18:03:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:03:30,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 18:03:30,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:03:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 18:03:30,211 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:03:30,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:03:30,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269147831] [2024-10-11 18:03:30,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269147831] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:03:30,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:03:30,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 18:03:30,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970276619] [2024-10-11 18:03:30,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:03:30,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 18:03:30,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:03:30,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 18:03:30,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:03:30,213 INFO L87 Difference]: Start difference. First operand 309 states and 364 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-11 18:03:30,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:03:30,824 INFO L93 Difference]: Finished difference Result 307 states and 357 transitions. [2024-10-11 18:03:30,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 18:03:30,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-10-11 18:03:30,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:03:30,826 INFO L225 Difference]: With dead ends: 307 [2024-10-11 18:03:30,826 INFO L226 Difference]: Without dead ends: 307 [2024-10-11 18:03:30,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:03:30,827 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 0 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 18:03:30,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1045 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 18:03:30,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-10-11 18:03:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2024-10-11 18:03:30,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 167 states have (on average 1.874251497005988) internal successors, (313), 279 states have internal predecessors, (313), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (27), 20 states have call predecessors, (27), 17 states have call successors, (27) [2024-10-11 18:03:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 357 transitions. [2024-10-11 18:03:30,834 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 357 transitions. Word has length 24 [2024-10-11 18:03:30,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:03:30,835 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 357 transitions. [2024-10-11 18:03:30,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-11 18:03:30,835 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 357 transitions. [2024-10-11 18:03:30,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 18:03:30,835 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:03:30,836 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:03:30,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 (23)] Forceful destruction successful, exit code 0 [2024-10-11 18:03:31,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:31,039 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:03:31,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:03:31,040 INFO L85 PathProgramCache]: Analyzing trace with hash 699460377, now seen corresponding path program 1 times [2024-10-11 18:03:31,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:03:31,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036543660] [2024-10-11 18:03:31,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:03:31,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 18:03:31,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:03:31,042 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:03:31,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:03:31,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 18:03:31,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:03:31,160 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 [2024-10-11 18:03:31,261 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)))) is different from true [2024-10-11 18:03:31,296 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-11 18:03:31,297 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 [2024-10-11 18:03:31,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2024-10-11 18:03:31,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:03:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 18:03:31,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:03:31,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036543660] [2024-10-11 18:03:31,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036543660] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:03:31,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:03:31,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2024-10-11 18:03:31,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564479194] [2024-10-11 18:03:31,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:03:31,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 18:03:31,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:03:31,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 18:03:31,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2024-10-11 18:03:31,590 INFO L87 Difference]: Start difference. First operand 307 states and 357 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 18:03:33,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:03:33,744 INFO L93 Difference]: Finished difference Result 333 states and 380 transitions. [2024-10-11 18:03:33,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 18:03:33,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2024-10-11 18:03:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:03:33,745 INFO L225 Difference]: With dead ends: 333 [2024-10-11 18:03:33,745 INFO L226 Difference]: Without dead ends: 333 [2024-10-11 18:03:33,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2024-10-11 18:03:33,746 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 197 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 342 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:03:33,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 677 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 683 Invalid, 0 Unknown, 342 Unchecked, 2.1s Time] [2024-10-11 18:03:33,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-10-11 18:03:33,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 309. [2024-10-11 18:03:33,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 170 states have (on average 1.8588235294117648) internal successors, (316), 281 states have internal predecessors, (316), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (27), 20 states have call predecessors, (27), 17 states have call successors, (27) [2024-10-11 18:03:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 360 transitions. [2024-10-11 18:03:33,753 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 360 transitions. Word has length 24 [2024-10-11 18:03:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:03:33,754 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 360 transitions. [2024-10-11 18:03:33,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 18:03:33,754 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 360 transitions. [2024-10-11 18:03:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 18:03:33,755 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:03:33,755 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:03:33,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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)] Ended with exit code 0 [2024-10-11 18:03:33,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:33,956 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:03:33,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:03:33,956 INFO L85 PathProgramCache]: Analyzing trace with hash 699460378, now seen corresponding path program 1 times [2024-10-11 18:03:33,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:03:33,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10301855] [2024-10-11 18:03:33,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:03:33,957 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 [2024-10-11 18:03:33,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:03:33,961 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:03:33,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:03:34,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 18:03:34,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:03:34,102 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 5 [2024-10-11 18:03:34,249 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| |c_ldv_malloc_#in~size|) |c_#length|)) is different from true [2024-10-11 18:03:34,281 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-11 18:03:34,281 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 12 treesize of output 14 [2024-10-11 18:03:34,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2024-10-11 18:03:34,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:03:34,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:03:34,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10301855] [2024-10-11 18:03:34,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10301855] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:03:34,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [209555091] [2024-10-11 18:03:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:03:34,576 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-11 18:03:34,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-11 18:03:34,577 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-11 18:03:34,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-10-11 18:03:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:03:34,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 18:03:34,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:03:34,748 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 [2024-10-11 18:03:34,761 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 5 [2024-10-11 18:03:34,952 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-10-11 18:03:34,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 18:03:34,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 18:03:35,007 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 18:03:35,007 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 [2024-10-11 18:03:35,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2024-10-11 18:03:35,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:03:35,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [209555091] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:03:35,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:03:35,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-10-11 18:03:35,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232569735] [2024-10-11 18:03:35,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:03:35,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 18:03:35,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:03:35,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 18:03:35,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=173, Unknown=2, NotChecked=54, Total=272 [2024-10-11 18:03:35,244 INFO L87 Difference]: Start difference. First operand 309 states and 360 transitions. Second operand has 14 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-11 18:03:41,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:03:41,459 INFO L93 Difference]: Finished difference Result 552 states and 658 transitions. [2024-10-11 18:03:41,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 18:03:41,460 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 24 [2024-10-11 18:03:41,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:03:41,462 INFO L225 Difference]: With dead ends: 552 [2024-10-11 18:03:41,462 INFO L226 Difference]: Without dead ends: 552 [2024-10-11 18:03:41,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=224, Unknown=3, NotChecked=62, Total=342 [2024-10-11 18:03:41,462 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 347 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 3519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1210 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:03:41,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 1486 Invalid, 3519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2242 Invalid, 0 Unknown, 1210 Unchecked, 6.0s Time] [2024-10-11 18:03:41,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-10-11 18:03:41,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 308. [2024-10-11 18:03:41,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 170 states have (on average 1.8529411764705883) internal successors, (315), 280 states have internal predecessors, (315), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (27), 20 states have call predecessors, (27), 17 states have call successors, (27) [2024-10-11 18:03:41,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 359 transitions. [2024-10-11 18:03:41,470 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 359 transitions. Word has length 24 [2024-10-11 18:03:41,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:03:41,471 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 359 transitions. [2024-10-11 18:03:41,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-11 18:03:41,472 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 359 transitions. [2024-10-11 18:03:41,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 18:03:41,472 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:03:41,473 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:03:41,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2024-10-11 18:03:41,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:41,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,25 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:41,874 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr103ASSERT_VIOLATIONMEMORY_LEAK === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:03:41,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:03:41,874 INFO L85 PathProgramCache]: Analyzing trace with hash -526471480, now seen corresponding path program 1 times [2024-10-11 18:03:41,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:03:41,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584872063] [2024-10-11 18:03:41,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:03:41,875 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 [2024-10-11 18:03:41,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:03:41,877 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:03:41,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:03:41,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 18:03:41,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:03:42,237 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~client~0#1.base_35| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~client~0#1.base_35|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~client~0#1.base_35| (_ bv0 1))))) is different from true [2024-10-11 18:03:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 18:03:42,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:03:42,517 INFO L349 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2024-10-11 18:03:42,517 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 43 treesize of output 38 [2024-10-11 18:03:42,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:03:42,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584872063] [2024-10-11 18:03:42,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584872063] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:03:42,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [195218014] [2024-10-11 18:03:42,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:03:42,719 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-11 18:03:42,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-11 18:03:42,720 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-11 18:03:42,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-10-11 18:03:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:03:42,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 18:03:42,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:03:43,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 18:03:43,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:03:43,227 INFO L349 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2024-10-11 18:03:43,227 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 43 treesize of output 38 [2024-10-11 18:03:43,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [195218014] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:03:43,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:03:43,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2024-10-11 18:03:43,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546410327] [2024-10-11 18:03:43,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:03:43,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 18:03:43,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:03:43,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 18:03:43,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=87, Unknown=1, NotChecked=18, Total=132 [2024-10-11 18:03:43,382 INFO L87 Difference]: Start difference. First operand 308 states and 359 transitions. Second operand has 11 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-11 18:03:47,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:03:47,284 INFO L93 Difference]: Finished difference Result 317 states and 367 transitions. [2024-10-11 18:03:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 18:03:47,285 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 24 [2024-10-11 18:03:47,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:03:47,286 INFO L225 Difference]: With dead ends: 317 [2024-10-11 18:03:47,286 INFO L226 Difference]: Without dead ends: 304 [2024-10-11 18:03:47,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 7 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=87, Unknown=1, NotChecked=18, Total=132 [2024-10-11 18:03:47,287 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 37 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 311 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-10-11 18:03:47,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1409 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1261 Invalid, 0 Unknown, 311 Unchecked, 3.8s Time] [2024-10-11 18:03:47,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-10-11 18:03:47,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2024-10-11 18:03:47,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 165 states have (on average 1.8727272727272728) internal successors, (309), 276 states have internal predecessors, (309), 17 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (26), 19 states have call predecessors, (26), 17 states have call successors, (26) [2024-10-11 18:03:47,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 352 transitions. [2024-10-11 18:03:47,294 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 352 transitions. Word has length 24 [2024-10-11 18:03:47,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:03:47,294 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 352 transitions. [2024-10-11 18:03:47,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-11 18:03:47,294 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 352 transitions. [2024-10-11 18:03:47,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-11 18:03:47,295 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:03:47,295 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:03:47,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2024-10-11 18:03:47,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:47,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,27 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:47,696 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:03:47,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:03:47,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1095946580, now seen corresponding path program 1 times [2024-10-11 18:03:47,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:03:47,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700912473] [2024-10-11 18:03:47,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:03:47,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 18:03:47,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:03:47,698 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:03:47,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:03:47,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 18:03:47,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:03:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 18:03:48,228 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:03:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 18:03:48,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:03:48,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700912473] [2024-10-11 18:03:48,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700912473] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:03:48,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:03:48,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2024-10-11 18:03:48,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277442305] [2024-10-11 18:03:48,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:03:48,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 18:03:48,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:03:48,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 18:03:48,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 18:03:48,344 INFO L87 Difference]: Start difference. First operand 302 states and 352 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 18:03:49,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:03:49,812 INFO L93 Difference]: Finished difference Result 303 states and 352 transitions. [2024-10-11 18:03:49,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 18:03:49,814 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 25 [2024-10-11 18:03:49,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:03:49,816 INFO L225 Difference]: With dead ends: 303 [2024-10-11 18:03:49,816 INFO L226 Difference]: Without dead ends: 303 [2024-10-11 18:03:49,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 18:03:49,816 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 610 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-11 18:03:49,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 915 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-11 18:03:49,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-10-11 18:03:49,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 301. [2024-10-11 18:03:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 165 states have (on average 1.8606060606060606) internal successors, (307), 275 states have internal predecessors, (307), 17 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (26), 19 states have call predecessors, (26), 17 states have call successors, (26) [2024-10-11 18:03:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 350 transitions. [2024-10-11 18:03:49,824 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 350 transitions. Word has length 25 [2024-10-11 18:03:49,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:03:49,833 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 350 transitions. [2024-10-11 18:03:49,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 18:03:49,834 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 350 transitions. [2024-10-11 18:03:49,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 18:03:49,834 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:03:49,834 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:03:49,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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)] Ended with exit code 0 [2024-10-11 18:03:50,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:50,035 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr103ASSERT_VIOLATIONMEMORY_LEAK === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2024-10-11 18:03:50,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:03:50,036 INFO L85 PathProgramCache]: Analyzing trace with hash -20912855, now seen corresponding path program 1 times [2024-10-11 18:03:50,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:03:50,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749815556] [2024-10-11 18:03:50,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:03:50,037 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 [2024-10-11 18:03:50,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:03:50,040 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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) [2024-10-11 18:03:50,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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 [2024-10-11 18:03:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:03:50,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 18:03:50,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:03:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 18:03:50,168 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:03:50,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:03:50,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749815556] [2024-10-11 18:03:50,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749815556] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:03:50,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:03:50,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 18:03:50,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208592971] [2024-10-11 18:03:50,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:03:50,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 18:03:50,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:03:50,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 18:03:50,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:03:50,170 INFO L87 Difference]: Start difference. First operand 301 states and 350 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:03:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:03:50,513 INFO L93 Difference]: Finished difference Result 294 states and 342 transitions. [2024-10-11 18:03:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 18:03:50,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-10-11 18:03:50,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:03:50,515 INFO L225 Difference]: With dead ends: 294 [2024-10-11 18:03:50,515 INFO L226 Difference]: Without dead ends: 294 [2024-10-11 18:03:50,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:03:50,516 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 180 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 18:03:50,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 865 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 18:03:50,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-10-11 18:03:50,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2024-10-11 18:03:50,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 158 states have (on average 1.8924050632911393) internal successors, (299), 268 states have internal predecessors, (299), 17 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (26), 19 states have call predecessors, (26), 17 states have call successors, (26) [2024-10-11 18:03:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 342 transitions. [2024-10-11 18:03:50,522 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 342 transitions. Word has length 24 [2024-10-11 18:03:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:03:50,523 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 342 transitions. [2024-10-11 18:03:50,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:03:50,523 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 342 transitions. [2024-10-11 18:03:50,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-11 18:03:50,524 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:03:50,524 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:03:50,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-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)] Ended with exit code 0