./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:35:33,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:35:34,011 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:35:34,015 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:35:34,015 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:35:34,028 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:35:34,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:35:34,029 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:35:34,029 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:35:34,030 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:35:34,030 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:35:34,030 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:35:34,030 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:35:34,030 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:35:34,030 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:35:34,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:35:34,030 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:35:34,031 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:35:34,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:35:34,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:35:34,031 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:35:34,031 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:35:34,031 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:35:34,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:35:34,031 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:35:34,031 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:35:34,031 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:35:34,031 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:35:34,032 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:35:34,032 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:35:34,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:35:34,032 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:35:34,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:35:34,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:35:34,032 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:35:34,032 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:35:34,032 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:35:34,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:35:34,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:35:34,033 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:35:34,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:35:34,033 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:35:34,033 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/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 -> ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 [2025-03-04 09:35:34,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:35:34,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:35:34,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:35:34,255 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:35:34,256 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:35:34,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2025-03-04 09:35:35,376 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d054a944/cc73b8ed74584813b9fd5f736cec9b3c/FLAGdc01b29d9 [2025-03-04 09:35:35,708 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:35:35,709 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2025-03-04 09:35:35,724 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d054a944/cc73b8ed74584813b9fd5f736cec9b3c/FLAGdc01b29d9 [2025-03-04 09:35:35,735 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d054a944/cc73b8ed74584813b9fd5f736cec9b3c [2025-03-04 09:35:35,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:35:35,738 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:35:35,739 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:35:35,739 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:35:35,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:35:35,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:35:35" (1/1) ... [2025-03-04 09:35:35,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709691d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:35:35, skipping insertion in model container [2025-03-04 09:35:35,744 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:35:35" (1/1) ... [2025-03-04 09:35:35,775 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:35:36,107 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:36,134 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:36,136 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:36,138 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:36,142 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:36,161 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:36,161 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:36,162 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:36,163 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:36,164 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:36,165 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:36,166 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:36,166 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:36,168 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:36,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:35:36,188 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) [2025-03-04 09:35:36,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c52c86d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:35:36, skipping insertion in model container [2025-03-04 09:35:36,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:35:36,189 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 09:35:36,191 INFO L158 Benchmark]: Toolchain (without parser) took 451.91ms. Allocated memory is still 167.8MB. Free memory was 119.9MB in the beginning and 98.7MB in the end (delta: 21.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 09:35:36,191 INFO L158 Benchmark]: CDTParser took 0.76ms. Allocated memory is still 201.3MB. Free memory is still 119.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:35:36,191 INFO L158 Benchmark]: CACSL2BoogieTranslator took 450.02ms. Allocated memory is still 167.8MB. Free memory was 119.6MB in the beginning and 98.7MB in the end (delta: 20.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 09:35:36,192 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76ms. Allocated memory is still 201.3MB. Free memory is still 119.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 450.02ms. Allocated memory is still 167.8MB. Free memory was 119.6MB in the beginning and 98.7MB in the end (delta: 20.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1001]: 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/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:35:37,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:35:37,844 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 09:35:37,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:35:37,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:35:37,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:35:37,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:35:37,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:35:37,877 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:35:37,877 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:35:37,877 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:35:37,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:35:37,878 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:35:37,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:35:37,878 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:35:37,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:35:37,879 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:35:37,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:35:37,879 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:35:37,879 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:35:37,879 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:35:37,879 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:35:37,879 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:35:37,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:35:37,879 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:35:37,880 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 09:35:37,880 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 09:35:37,880 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:35:37,880 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:35:37,880 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:35:37,880 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:35:37,880 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:35:37,881 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:35:37,881 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:35:37,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:35:37,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:35:37,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:35:37,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:35:37,881 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 09:35:37,881 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 09:35:37,881 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:35:37,882 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:35:37,882 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:35:37,882 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:35:37,882 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/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 -> ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 [2025-03-04 09:35:38,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:35:38,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:35:38,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:35:38,117 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:35:38,118 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:35:38,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2025-03-04 09:35:39,287 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fec996277/84887c9103314384ba8e5257cddd0a02/FLAG8b8125234 [2025-03-04 09:35:39,566 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:35:39,568 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2025-03-04 09:35:39,587 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fec996277/84887c9103314384ba8e5257cddd0a02/FLAG8b8125234 [2025-03-04 09:35:39,603 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fec996277/84887c9103314384ba8e5257cddd0a02 [2025-03-04 09:35:39,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:35:39,607 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:35:39,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:35:39,608 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:35:39,611 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:35:39,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:35:39" (1/1) ... [2025-03-04 09:35:39,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33bcac9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:35:39, skipping insertion in model container [2025-03-04 09:35:39,613 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:35:39" (1/1) ... [2025-03-04 09:35:39,650 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:35:40,069 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,099 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,103 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,107 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,112 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,137 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,138 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,139 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,139 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,141 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,142 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,143 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,143 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,148 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:35:40,161 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 09:35:40,172 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:35:40,212 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,228 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,232 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,234 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,240 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,256 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,257 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,260 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,260 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,264 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,265 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,268 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,268 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,271 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:35:40,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:35:40,278 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:35:40,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:35:40,415 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:35:40,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:35:40 WrapperNode [2025-03-04 09:35:40,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:35:40,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:35:40,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:35:40,418 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:35:40,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:35:40" (1/1) ... [2025-03-04 09:35:40,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:35:40" (1/1) ... [2025-03-04 09:35:40,491 INFO L138 Inliner]: procedures = 286, calls = 300, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1033 [2025-03-04 09:35:40,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:35:40,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:35:40,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:35:40,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:35:40,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:35:40" (1/1) ... [2025-03-04 09:35:40,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:35:40" (1/1) ... [2025-03-04 09:35:40,513 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:35:40" (1/1) ... [2025-03-04 09:35:40,575 INFO L175 MemorySlicer]: Split 268 memory accesses to 4 slices as follows [2, 34, 12, 220]. 82 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 10, 0]. The 54 writes are split as follows [0, 4, 1, 49]. [2025-03-04 09:35:40,576 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:35:40" (1/1) ... [2025-03-04 09:35:40,576 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:35:40" (1/1) ... [2025-03-04 09:35:40,611 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:35:40" (1/1) ... [2025-03-04 09:35:40,613 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:35:40" (1/1) ... [2025-03-04 09:35:40,619 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:35:40" (1/1) ... [2025-03-04 09:35:40,628 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:35:40" (1/1) ... [2025-03-04 09:35:40,638 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:35:40,640 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:35:40,640 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:35:40,640 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:35:40,641 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:35:40" (1/1) ... [2025-03-04 09:35:40,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:35:40,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:35:40,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 09:35:40,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 09:35:40,696 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-03-04 09:35:40,696 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-03-04 09:35:40,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-04 09:35:40,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-04 09:35:40,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-04 09:35:40,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2025-03-04 09:35:40,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-04 09:35:40,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-04 09:35:40,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-04 09:35:40,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2025-03-04 09:35:40,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 09:35:40,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 09:35:40,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 09:35:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 09:35:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-04 09:35:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:35:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 09:35:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-04 09:35:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-04 09:35:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2025-03-04 09:35:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 09:35:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-04 09:35:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-04 09:35:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2025-03-04 09:35:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2025-03-04 09:35:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2025-03-04 09:35:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2025-03-04 09:35:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2025-03-04 09:35:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2025-03-04 09:35:40,699 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2025-03-04 09:35:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-04 09:35:40,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-04 09:35:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 09:35:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:35:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2025-03-04 09:35:40,700 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2025-03-04 09:35:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:35:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:35:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 09:35:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-04 09:35:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2025-03-04 09:35:40,700 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2025-03-04 09:35:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:35:40,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:35:40,884 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:35:40,885 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:35:40,960 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L955: havoc #t~malloc32.base, #t~malloc32.offset; [2025-03-04 09:35:43,313 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L969: havoc alt_memcmp_#t~nondet36#1; [2025-03-04 09:35:43,313 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L979: havoc real_malloc_#t~malloc39#1.base, real_malloc_#t~malloc39#1.offset; [2025-03-04 09:35:43,314 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L987: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-04 09:35:43,400 INFO L? ?]: Removed 1086 outVars from TransFormulas that were not future-live. [2025-03-04 09:35:43,400 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:35:43,422 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:35:43,422 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:35:43,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:35:43 BoogieIcfgContainer [2025-03-04 09:35:43,423 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:35:43,425 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:35:43,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:35:43,428 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:35:43,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:35:39" (1/3) ... [2025-03-04 09:35:43,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d28313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:35:43, skipping insertion in model container [2025-03-04 09:35:43,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:35:40" (2/3) ... [2025-03-04 09:35:43,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d28313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:35:43, skipping insertion in model container [2025-03-04 09:35:43,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:35:43" (3/3) ... [2025-03-04 09:35:43,430 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-1.i [2025-03-04 09:35:43,441 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:35:43,443 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_test6-1.i that has 6 procedures, 1080 locations, 1 initial locations, 34 loop locations, and 522 error locations. [2025-03-04 09:35:43,510 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:35:43,520 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;@48fd2ebe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:35:43,520 INFO L334 AbstractCegarLoop]: Starting to check reachability of 522 error locations. [2025-03-04 09:35:43,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 1080 states, 535 states have (on average 2.2) internal successors, (1177), 1060 states have internal predecessors, (1177), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-04 09:35:43,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:35:43,528 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:35:43,529 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:35:43,529 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr510REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:35:43,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:35:43,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1218378, now seen corresponding path program 1 times [2025-03-04 09:35:43,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:35:43,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273428380] [2025-03-04 09:35:43,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:35:43,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:35:43,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:35:43,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:35:43,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 09:35:43,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:35:43,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:35:43,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:35:43,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:35:43,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:35:43,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:35:43,744 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 [2025-03-04 09:35:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:35:43,759 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:35:43,760 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:35:43,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273428380] [2025-03-04 09:35:43,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273428380] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:35:43,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:35:43,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:35:43,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651500156] [2025-03-04 09:35:43,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:35:43,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:35:43,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:35:43,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:35:43,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:35:43,784 INFO L87 Difference]: Start difference. First operand has 1080 states, 535 states have (on average 2.2) internal successors, (1177), 1060 states have internal predecessors, (1177), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:35:45,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:35:45,044 INFO L93 Difference]: Finished difference Result 1160 states and 1230 transitions. [2025-03-04 09:35:45,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:35:45,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-03-04 09:35:45,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:35:45,058 INFO L225 Difference]: With dead ends: 1160 [2025-03-04 09:35:45,058 INFO L226 Difference]: Without dead ends: 1158 [2025-03-04 09:35:45,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:35:45,062 INFO L435 NwaCegarLoop]: 791 mSDtfsCounter, 716 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:35:45,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1036 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-04 09:35:45,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2025-03-04 09:35:45,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1101. [2025-03-04 09:35:45,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 571 states have (on average 2.0665499124343256) internal successors, (1180), 1083 states have internal predecessors, (1180), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:35:45,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1210 transitions. [2025-03-04 09:35:45,133 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1210 transitions. Word has length 3 [2025-03-04 09:35:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:35:45,133 INFO L471 AbstractCegarLoop]: Abstraction has 1101 states and 1210 transitions. [2025-03-04 09:35:45,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:35:45,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1210 transitions. [2025-03-04 09:35:45,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:35:45,133 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:35:45,133 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:35:45,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 09:35:45,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:35:45,341 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr511REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:35:45,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:35:45,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1218379, now seen corresponding path program 1 times [2025-03-04 09:35:45,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:35:45,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239773801] [2025-03-04 09:35:45,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:35:45,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:35:45,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:35:45,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:35:45,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 09:35:45,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:35:45,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:35:45,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:35:45,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:35:45,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:35:45,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:35:45,469 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 [2025-03-04 09:35:45,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:35:45,478 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:35:45,478 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:35:45,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239773801] [2025-03-04 09:35:45,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239773801] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:35:45,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:35:45,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:35:45,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246338743] [2025-03-04 09:35:45,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:35:45,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:35:45,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:35:45,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:35:45,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:35:45,481 INFO L87 Difference]: Start difference. First operand 1101 states and 1210 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:35:47,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:35:47,254 INFO L93 Difference]: Finished difference Result 1503 states and 1649 transitions. [2025-03-04 09:35:47,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:35:47,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-03-04 09:35:47,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:35:47,260 INFO L225 Difference]: With dead ends: 1503 [2025-03-04 09:35:47,261 INFO L226 Difference]: Without dead ends: 1503 [2025-03-04 09:35:47,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:35:47,262 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 426 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:35:47,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1528 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-04 09:35:47,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2025-03-04 09:35:47,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1312. [2025-03-04 09:35:47,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 781 states have (on average 2.0524967989756724) internal successors, (1603), 1292 states have internal predecessors, (1603), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-04 09:35:47,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1637 transitions. [2025-03-04 09:35:47,300 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1637 transitions. Word has length 3 [2025-03-04 09:35:47,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:35:47,300 INFO L471 AbstractCegarLoop]: Abstraction has 1312 states and 1637 transitions. [2025-03-04 09:35:47,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:35:47,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1637 transitions. [2025-03-04 09:35:47,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:35:47,301 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:35:47,301 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:35:47,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 09:35:47,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:35:47,502 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr507REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:35:47,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:35:47,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1490638316, now seen corresponding path program 1 times [2025-03-04 09:35:47,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:35:47,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530848318] [2025-03-04 09:35:47,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:35:47,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:35:47,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:35:47,504 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:35:47,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 09:35:47,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:35:47,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:35:47,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:35:47,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:35:47,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:35:47,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:35:47,623 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 [2025-03-04 09:35:47,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:35:47,674 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 [2025-03-04 09:35:47,687 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:35:47,687 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 [2025-03-04 09:35:47,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:35:47,712 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:35:47,712 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:35:47,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530848318] [2025-03-04 09:35:47,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530848318] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:35:47,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:35:47,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:35:47,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275935993] [2025-03-04 09:35:47,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:35:47,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:35:47,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:35:47,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:35:47,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:35:47,713 INFO L87 Difference]: Start difference. First operand 1312 states and 1637 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:35:50,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:35:50,516 INFO L93 Difference]: Finished difference Result 2014 states and 2397 transitions. [2025-03-04 09:35:50,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:35:50,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-04 09:35:50,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:35:50,522 INFO L225 Difference]: With dead ends: 2014 [2025-03-04 09:35:50,522 INFO L226 Difference]: Without dead ends: 2014 [2025-03-04 09:35:50,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:35:50,523 INFO L435 NwaCegarLoop]: 638 mSDtfsCounter, 730 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 1805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:35:50,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1570 Invalid, 1805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-04 09:35:50,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2025-03-04 09:35:50,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1459. [2025-03-04 09:35:50,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 928 states have (on average 2.0344827586206895) internal successors, (1888), 1439 states have internal predecessors, (1888), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-04 09:35:50,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 1922 transitions. [2025-03-04 09:35:50,555 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 1922 transitions. Word has length 8 [2025-03-04 09:35:50,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:35:50,555 INFO L471 AbstractCegarLoop]: Abstraction has 1459 states and 1922 transitions. [2025-03-04 09:35:50,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:35:50,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 1922 transitions. [2025-03-04 09:35:50,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-04 09:35:50,556 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:35:50,556 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:35:50,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 09:35:50,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:35:50,757 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr504REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:35:50,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:35:50,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1034853573, now seen corresponding path program 1 times [2025-03-04 09:35:50,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:35:50,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812542194] [2025-03-04 09:35:50,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:35:50,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:35:50,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:35:50,768 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:35:50,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 09:35:50,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:35:50,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:35:50,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:35:50,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:35:50,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:35:50,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:35:50,891 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 [2025-03-04 09:35:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:35:50,909 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:35:50,909 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:35:50,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812542194] [2025-03-04 09:35:50,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812542194] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:35:50,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:35:50,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:35:50,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123403995] [2025-03-04 09:35:50,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:35:50,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:35:50,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:35:50,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:35:50,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:35:50,910 INFO L87 Difference]: Start difference. First operand 1459 states and 1922 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:35:52,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:35:52,484 INFO L93 Difference]: Finished difference Result 2002 states and 2693 transitions. [2025-03-04 09:35:52,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:35:52,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-04 09:35:52,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:35:52,490 INFO L225 Difference]: With dead ends: 2002 [2025-03-04 09:35:52,491 INFO L226 Difference]: Without dead ends: 2002 [2025-03-04 09:35:52,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:35:52,491 INFO L435 NwaCegarLoop]: 1008 mSDtfsCounter, 919 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:35:52,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 2077 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-04 09:35:52,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2025-03-04 09:35:52,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1414. [2025-03-04 09:35:52,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 928 states have (on average 1.9709051724137931) internal successors, (1829), 1394 states have internal predecessors, (1829), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-04 09:35:52,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 1863 transitions. [2025-03-04 09:35:52,514 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 1863 transitions. Word has length 9 [2025-03-04 09:35:52,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:35:52,514 INFO L471 AbstractCegarLoop]: Abstraction has 1414 states and 1863 transitions. [2025-03-04 09:35:52,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:35:52,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 1863 transitions. [2025-03-04 09:35:52,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-04 09:35:52,514 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:35:52,514 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:35:52,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 09:35:52,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:35:52,715 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr505REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:35:52,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:35:52,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1034853574, now seen corresponding path program 1 times [2025-03-04 09:35:52,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:35:52,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102279402] [2025-03-04 09:35:52,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:35:52,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:35:52,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:35:52,718 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:35:52,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 09:35:52,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:35:52,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:35:52,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:35:52,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:35:52,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:35:52,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:35:52,842 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 [2025-03-04 09:35:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:35:52,872 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:35:52,872 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:35:52,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102279402] [2025-03-04 09:35:52,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102279402] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:35:52,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:35:52,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:35:52,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875277937] [2025-03-04 09:35:52,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:35:52,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:35:52,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:35:52,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:35:52,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:35:52,873 INFO L87 Difference]: Start difference. First operand 1414 states and 1863 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:35:55,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:35:55,131 INFO L93 Difference]: Finished difference Result 2066 states and 2715 transitions. [2025-03-04 09:35:55,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:35:55,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-04 09:35:55,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:35:55,137 INFO L225 Difference]: With dead ends: 2066 [2025-03-04 09:35:55,137 INFO L226 Difference]: Without dead ends: 2066 [2025-03-04 09:35:55,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:35:55,137 INFO L435 NwaCegarLoop]: 1184 mSDtfsCounter, 700 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:35:55,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 2431 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-04 09:35:55,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2025-03-04 09:35:55,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1406. [2025-03-04 09:35:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 930 states have (on average 1.9430107526881721) internal successors, (1807), 1386 states have internal predecessors, (1807), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-04 09:35:55,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 1841 transitions. [2025-03-04 09:35:55,161 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 1841 transitions. Word has length 9 [2025-03-04 09:35:55,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:35:55,161 INFO L471 AbstractCegarLoop]: Abstraction has 1406 states and 1841 transitions. [2025-03-04 09:35:55,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:35:55,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 1841 transitions. [2025-03-04 09:35:55,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-04 09:35:55,162 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:35:55,162 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:35:55,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 09:35:55,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:35:55,363 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr188REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:35:55,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:35:55,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1619344310, now seen corresponding path program 1 times [2025-03-04 09:35:55,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:35:55,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156399400] [2025-03-04 09:35:55,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:35:55,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:35:55,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:35:55,366 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:35:55,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 09:35:55,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 09:35:55,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 09:35:55,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:35:55,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:35:55,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:35:55,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:35:55,483 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 [2025-03-04 09:35:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:35:55,511 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:35:55,511 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:35:55,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156399400] [2025-03-04 09:35:55,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156399400] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:35:55,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:35:55,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:35:55,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952563699] [2025-03-04 09:35:55,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:35:55,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:35:55,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:35:55,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:35:55,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:35:55,512 INFO L87 Difference]: Start difference. First operand 1406 states and 1841 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:35:56,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:35:56,655 INFO L93 Difference]: Finished difference Result 1444 states and 1826 transitions. [2025-03-04 09:35:56,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:35:56,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-04 09:35:56,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:35:56,659 INFO L225 Difference]: With dead ends: 1444 [2025-03-04 09:35:56,659 INFO L226 Difference]: Without dead ends: 1444 [2025-03-04 09:35:56,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:35:56,661 INFO L435 NwaCegarLoop]: 725 mSDtfsCounter, 735 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:35:56,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1474 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-04 09:35:56,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2025-03-04 09:35:56,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1383. [2025-03-04 09:35:56,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 930 states have (on average 1.8935483870967742) internal successors, (1761), 1363 states have internal predecessors, (1761), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-04 09:35:56,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1795 transitions. [2025-03-04 09:35:56,681 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1795 transitions. Word has length 12 [2025-03-04 09:35:56,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:35:56,681 INFO L471 AbstractCegarLoop]: Abstraction has 1383 states and 1795 transitions. [2025-03-04 09:35:56,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:35:56,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1795 transitions. [2025-03-04 09:35:56,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-04 09:35:56,682 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:35:56,682 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:35:56,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 09:35:56,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:35:56,882 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr189REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:35:56,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:35:56,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1619344311, now seen corresponding path program 1 times [2025-03-04 09:35:56,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:35:56,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958677629] [2025-03-04 09:35:56,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:35:56,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:35:56,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:35:56,885 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:35:56,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 09:35:56,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 09:35:56,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 09:35:56,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:35:56,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:35:56,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:35:57,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:35:57,011 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 [2025-03-04 09:35:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:35:57,066 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:35:57,067 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:35:57,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958677629] [2025-03-04 09:35:57,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958677629] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:35:57,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:35:57,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:35:57,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128287139] [2025-03-04 09:35:57,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:35:57,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:35:57,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:35:57,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:35:57,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:35:57,068 INFO L87 Difference]: Start difference. First operand 1383 states and 1795 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:35:58,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:35:58,823 INFO L93 Difference]: Finished difference Result 1733 states and 2174 transitions. [2025-03-04 09:35:58,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:35:58,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-04 09:35:58,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:35:58,828 INFO L225 Difference]: With dead ends: 1733 [2025-03-04 09:35:58,829 INFO L226 Difference]: Without dead ends: 1733 [2025-03-04 09:35:58,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:35:58,829 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 405 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:35:58,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1935 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-04 09:35:58,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2025-03-04 09:35:58,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1576. [2025-03-04 09:35:58,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1121 states have (on average 1.8911685994647636) internal successors, (2120), 1554 states have internal predecessors, (2120), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 09:35:58,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2158 transitions. [2025-03-04 09:35:58,852 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2158 transitions. Word has length 12 [2025-03-04 09:35:58,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:35:58,852 INFO L471 AbstractCegarLoop]: Abstraction has 1576 states and 2158 transitions. [2025-03-04 09:35:58,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:35:58,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2158 transitions. [2025-03-04 09:35:58,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-04 09:35:58,854 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:35:58,854 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:35:58,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 09:35:59,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:35:59,058 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:35:59,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:35:59,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1742458494, now seen corresponding path program 1 times [2025-03-04 09:35:59,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:35:59,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339088719] [2025-03-04 09:35:59,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:35:59,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:35:59,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:35:59,061 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:35:59,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 09:35:59,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:35:59,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:35:59,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:35:59,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:35:59,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:35:59,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:35:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:35:59,236 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:35:59,236 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:35:59,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339088719] [2025-03-04 09:35:59,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339088719] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:35:59,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:35:59,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:35:59,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187274113] [2025-03-04 09:35:59,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:35:59,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:35:59,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:35:59,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:35:59,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:35:59,237 INFO L87 Difference]: Start difference. First operand 1576 states and 2158 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:35:59,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:35:59,584 INFO L93 Difference]: Finished difference Result 1766 states and 2219 transitions. [2025-03-04 09:35:59,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:35:59,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-04 09:35:59,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:35:59,588 INFO L225 Difference]: With dead ends: 1766 [2025-03-04 09:35:59,588 INFO L226 Difference]: Without dead ends: 1766 [2025-03-04 09:35:59,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:35:59,589 INFO L435 NwaCegarLoop]: 1169 mSDtfsCounter, 428 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 3195 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:35:59,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 3195 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 09:35:59,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2025-03-04 09:35:59,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1584. [2025-03-04 09:35:59,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1131 states have (on average 1.8806366047745358) internal successors, (2127), 1564 states have internal predecessors, (2127), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-04 09:35:59,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2161 transitions. [2025-03-04 09:35:59,606 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2161 transitions. Word has length 13 [2025-03-04 09:35:59,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:35:59,606 INFO L471 AbstractCegarLoop]: Abstraction has 1584 states and 2161 transitions. [2025-03-04 09:35:59,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:35:59,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2161 transitions. [2025-03-04 09:35:59,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-04 09:35:59,607 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:35:59,607 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:35:59,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-04 09:35:59,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:35:59,807 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr165REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:35:59,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:35:59,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1339978126, now seen corresponding path program 1 times [2025-03-04 09:35:59,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:35:59,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761134211] [2025-03-04 09:35:59,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:35:59,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:35:59,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:35:59,810 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:35:59,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 09:35:59,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:35:59,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:35:59,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:35:59,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:35:59,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:35:59,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:35:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:35:59,932 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:35:59,932 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:35:59,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761134211] [2025-03-04 09:35:59,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761134211] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:35:59,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:35:59,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:35:59,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154825184] [2025-03-04 09:35:59,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:35:59,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:35:59,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:35:59,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:35:59,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:35:59,935 INFO L87 Difference]: Start difference. First operand 1584 states and 2161 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:35:59,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:35:59,976 INFO L93 Difference]: Finished difference Result 1512 states and 2038 transitions. [2025-03-04 09:35:59,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:35:59,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-04 09:35:59,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:35:59,983 INFO L225 Difference]: With dead ends: 1512 [2025-03-04 09:35:59,984 INFO L226 Difference]: Without dead ends: 1512 [2025-03-04 09:35:59,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:35:59,985 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 45 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:35:59,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2869 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:35:59,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2025-03-04 09:35:59,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1512. [2025-03-04 09:35:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1078 states have (on average 1.8589981447124304) internal successors, (2004), 1492 states have internal predecessors, (2004), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-04 09:36:00,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2038 transitions. [2025-03-04 09:36:00,003 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2038 transitions. Word has length 13 [2025-03-04 09:36:00,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:36:00,003 INFO L471 AbstractCegarLoop]: Abstraction has 1512 states and 2038 transitions. [2025-03-04 09:36:00,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:36:00,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2038 transitions. [2025-03-04 09:36:00,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-04 09:36:00,004 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:36:00,004 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:36:00,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 09:36:00,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:00,208 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:36:00,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:36:00,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1368200981, now seen corresponding path program 1 times [2025-03-04 09:36:00,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:36:00,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630118334] [2025-03-04 09:36:00,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:36:00,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:00,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:36:00,210 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:36:00,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 09:36:00,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 09:36:00,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 09:36:00,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:36:00,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:36:00,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:36:00,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:36:00,324 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:36:00,324 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:36:00,325 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:36:00,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 39 [2025-03-04 09:36:00,368 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:36:00,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-03-04 09:36:00,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:36:00,377 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:36:00,377 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:36:00,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630118334] [2025-03-04 09:36:00,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630118334] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:36:00,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:36:00,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:36:00,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857562160] [2025-03-04 09:36:00,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:36:00,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:36:00,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:36:00,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:36:00,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:36:00,378 INFO L87 Difference]: Start difference. First operand 1512 states and 2038 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:36:00,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:36:00,589 INFO L93 Difference]: Finished difference Result 2028 states and 2394 transitions. [2025-03-04 09:36:00,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:36:00,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-03-04 09:36:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:36:00,594 INFO L225 Difference]: With dead ends: 2028 [2025-03-04 09:36:00,594 INFO L226 Difference]: Without dead ends: 2028 [2025-03-04 09:36:00,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:36:00,595 INFO L435 NwaCegarLoop]: 961 mSDtfsCounter, 855 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:36:00,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 2860 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 09:36:00,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2025-03-04 09:36:00,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1197. [2025-03-04 09:36:00,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 765 states have (on average 1.8679738562091504) internal successors, (1429), 1179 states have internal predecessors, (1429), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:36:00,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1459 transitions. [2025-03-04 09:36:00,609 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1459 transitions. Word has length 16 [2025-03-04 09:36:00,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:36:00,609 INFO L471 AbstractCegarLoop]: Abstraction has 1197 states and 1459 transitions. [2025-03-04 09:36:00,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:36:00,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1459 transitions. [2025-03-04 09:36:00,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-04 09:36:00,609 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:36:00,609 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:36:00,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 09:36:00,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:00,810 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr496REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:36:00,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:36:00,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1508005960, now seen corresponding path program 1 times [2025-03-04 09:36:00,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:36:00,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946351700] [2025-03-04 09:36:00,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:36:00,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:00,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:36:00,813 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:36:00,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 09:36:00,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 09:36:00,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 09:36:00,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:36:00,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:36:00,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:36:00,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:36:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:36:00,983 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:36:00,983 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:36:00,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946351700] [2025-03-04 09:36:00,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946351700] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:36:00,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:36:00,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:36:00,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84704239] [2025-03-04 09:36:00,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:36:00,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:36:00,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:36:00,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:36:00,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:36:00,983 INFO L87 Difference]: Start difference. First operand 1197 states and 1459 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:36:02,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:36:02,272 INFO L93 Difference]: Finished difference Result 1576 states and 1933 transitions. [2025-03-04 09:36:02,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:36:02,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-03-04 09:36:02,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:36:02,276 INFO L225 Difference]: With dead ends: 1576 [2025-03-04 09:36:02,276 INFO L226 Difference]: Without dead ends: 1576 [2025-03-04 09:36:02,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:36:02,277 INFO L435 NwaCegarLoop]: 534 mSDtfsCounter, 883 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:36:02,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 1216 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 09:36:02,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2025-03-04 09:36:02,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1174. [2025-03-04 09:36:02,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 765 states have (on average 1.807843137254902) internal successors, (1383), 1156 states have internal predecessors, (1383), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:36:02,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1413 transitions. [2025-03-04 09:36:02,288 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1413 transitions. Word has length 18 [2025-03-04 09:36:02,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:36:02,288 INFO L471 AbstractCegarLoop]: Abstraction has 1174 states and 1413 transitions. [2025-03-04 09:36:02,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:36:02,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1413 transitions. [2025-03-04 09:36:02,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-04 09:36:02,288 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:36:02,289 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:36:02,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-04 09:36:02,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:02,489 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr497REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:36:02,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:36:02,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1508005961, now seen corresponding path program 1 times [2025-03-04 09:36:02,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:36:02,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238695688] [2025-03-04 09:36:02,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:36:02,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:02,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:36:02,492 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:36:02,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 09:36:02,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 09:36:02,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 09:36:02,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:36:02,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:36:02,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 09:36:02,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:36:02,625 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 [2025-03-04 09:36:02,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:36:02,702 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:36:02,702 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:36:02,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238695688] [2025-03-04 09:36:02,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238695688] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:36:02,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:36:02,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:36:02,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324103089] [2025-03-04 09:36:02,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:36:02,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:36:02,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:36:02,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:36:02,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:36:02,703 INFO L87 Difference]: Start difference. First operand 1174 states and 1413 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:36:04,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:36:04,965 INFO L93 Difference]: Finished difference Result 1815 states and 2177 transitions. [2025-03-04 09:36:04,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:36:04,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-03-04 09:36:04,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:36:04,970 INFO L225 Difference]: With dead ends: 1815 [2025-03-04 09:36:04,970 INFO L226 Difference]: Without dead ends: 1815 [2025-03-04 09:36:04,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:36:04,970 INFO L435 NwaCegarLoop]: 1123 mSDtfsCounter, 738 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:36:04,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 2994 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-04 09:36:04,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2025-03-04 09:36:04,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1288. [2025-03-04 09:36:04,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 879 states have (on average 1.7303754266211604) internal successors, (1521), 1270 states have internal predecessors, (1521), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:36:04,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1551 transitions. [2025-03-04 09:36:04,994 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1551 transitions. Word has length 18 [2025-03-04 09:36:04,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:36:04,995 INFO L471 AbstractCegarLoop]: Abstraction has 1288 states and 1551 transitions. [2025-03-04 09:36:04,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:36:04,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1551 transitions. [2025-03-04 09:36:04,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-04 09:36:04,997 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:36:04,997 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:36:05,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-04 09:36:05,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:05,197 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr497REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:36:05,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:36:05,198 INFO L85 PathProgramCache]: Analyzing trace with hash 567664131, now seen corresponding path program 1 times [2025-03-04 09:36:05,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:36:05,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146031435] [2025-03-04 09:36:05,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:36:05,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:05,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:36:05,200 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:36:05,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 09:36:05,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-04 09:36:05,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 09:36:05,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:36:05,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:36:05,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-04 09:36:05,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:36:05,399 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 [2025-03-04 09:36:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:36:05,550 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:36:05,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:36:05,908 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:36:05,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146031435] [2025-03-04 09:36:05,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146031435] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:36:05,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:36:05,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2025-03-04 09:36:05,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544189975] [2025-03-04 09:36:05,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:36:05,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 09:36:05,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:36:05,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 09:36:05,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-04 09:36:05,909 INFO L87 Difference]: Start difference. First operand 1288 states and 1551 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:36:12,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:36:12,538 INFO L93 Difference]: Finished difference Result 2171 states and 2667 transitions. [2025-03-04 09:36:12,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:36:12,539 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-03-04 09:36:12,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:36:12,546 INFO L225 Difference]: With dead ends: 2171 [2025-03-04 09:36:12,547 INFO L226 Difference]: Without dead ends: 2171 [2025-03-04 09:36:12,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2025-03-04 09:36:12,547 INFO L435 NwaCegarLoop]: 1176 mSDtfsCounter, 1414 mSDsluCounter, 3950 mSDsCounter, 0 mSdLazyCounter, 3886 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 5126 SdHoareTripleChecker+Invalid, 3913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:36:12,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1416 Valid, 5126 Invalid, 3913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3886 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2025-03-04 09:36:12,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2025-03-04 09:36:12,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 1452. [2025-03-04 09:36:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1043 states have (on average 1.6807286673058486) internal successors, (1753), 1434 states have internal predecessors, (1753), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:36:12,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1783 transitions. [2025-03-04 09:36:12,569 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1783 transitions. Word has length 37 [2025-03-04 09:36:12,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:36:12,570 INFO L471 AbstractCegarLoop]: Abstraction has 1452 states and 1783 transitions. [2025-03-04 09:36:12,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:36:12,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1783 transitions. [2025-03-04 09:36:12,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-04 09:36:12,573 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:36:12,573 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:36:12,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-04 09:36:12,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:12,773 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:36:12,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:36:12,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1126158623, now seen corresponding path program 1 times [2025-03-04 09:36:12,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:36:12,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023819354] [2025-03-04 09:36:12,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:36:12,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:12,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:36:12,776 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:36:12,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 09:36:12,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-04 09:36:12,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 09:36:12,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:36:12,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:36:12,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:36:12,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:36:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:36:12,989 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:36:12,990 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:36:12,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023819354] [2025-03-04 09:36:12,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023819354] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:36:12,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:36:12,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:36:12,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742020248] [2025-03-04 09:36:12,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:36:12,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:36:12,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:36:12,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:36:12,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:36:12,990 INFO L87 Difference]: Start difference. First operand 1452 states and 1783 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:36:13,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:36:13,045 INFO L93 Difference]: Finished difference Result 1141 states and 1347 transitions. [2025-03-04 09:36:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:36:13,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2025-03-04 09:36:13,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:36:13,050 INFO L225 Difference]: With dead ends: 1141 [2025-03-04 09:36:13,050 INFO L226 Difference]: Without dead ends: 1141 [2025-03-04 09:36:13,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:36:13,051 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 56 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:36:13,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2630 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:36:13,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2025-03-04 09:36:13,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1139. [2025-03-04 09:36:13,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 753 states have (on average 1.746347941567065) internal successors, (1315), 1121 states have internal predecessors, (1315), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:36:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1345 transitions. [2025-03-04 09:36:13,059 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1345 transitions. Word has length 53 [2025-03-04 09:36:13,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:36:13,059 INFO L471 AbstractCegarLoop]: Abstraction has 1139 states and 1345 transitions. [2025-03-04 09:36:13,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:36:13,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1345 transitions. [2025-03-04 09:36:13,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-04 09:36:13,060 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:36:13,060 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:36:13,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-04 09:36:13,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:13,261 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:36:13,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:36:13,261 INFO L85 PathProgramCache]: Analyzing trace with hash 920817065, now seen corresponding path program 1 times [2025-03-04 09:36:13,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:36:13,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050648503] [2025-03-04 09:36:13,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:36:13,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:13,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:36:13,263 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:36:13,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-04 09:36:13,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-04 09:36:13,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-04 09:36:13,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:36:13,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:36:13,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 09:36:13,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:36:13,512 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-04 09:36:13,513 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 [2025-03-04 09:36:13,542 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2025-03-04 09:36:13,543 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 16 treesize of output 17 [2025-03-04 09:36:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:36:13,778 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:36:13,778 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:36:13,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050648503] [2025-03-04 09:36:13,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050648503] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:36:13,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:36:13,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:36:13,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991114111] [2025-03-04 09:36:13,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:36:13,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:36:13,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:36:13,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:36:13,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:36:13,778 INFO L87 Difference]: Start difference. First operand 1139 states and 1345 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:36:15,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:36:15,514 INFO L93 Difference]: Finished difference Result 2057 states and 2448 transitions. [2025-03-04 09:36:15,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:36:15,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-03-04 09:36:15,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:36:15,519 INFO L225 Difference]: With dead ends: 2057 [2025-03-04 09:36:15,519 INFO L226 Difference]: Without dead ends: 2057 [2025-03-04 09:36:15,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:36:15,519 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 768 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:36:15,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 2090 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-04 09:36:15,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2025-03-04 09:36:15,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1583. [2025-03-04 09:36:15,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1182 states have (on average 1.7436548223350254) internal successors, (2061), 1553 states have internal predecessors, (2061), 29 states have call successors, (29), 9 states have call predecessors, (29), 7 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:36:15,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2115 transitions. [2025-03-04 09:36:15,533 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2115 transitions. Word has length 61 [2025-03-04 09:36:15,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:36:15,533 INFO L471 AbstractCegarLoop]: Abstraction has 1583 states and 2115 transitions. [2025-03-04 09:36:15,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:36:15,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2115 transitions. [2025-03-04 09:36:15,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-04 09:36:15,533 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:36:15,533 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:36:15,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-04 09:36:15,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:15,734 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:36:15,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:36:15,734 INFO L85 PathProgramCache]: Analyzing trace with hash 920817066, now seen corresponding path program 1 times [2025-03-04 09:36:15,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:36:15,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181191622] [2025-03-04 09:36:15,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:36:15,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:15,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:36:15,736 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:36:15,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-04 09:36:15,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-04 09:36:15,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-04 09:36:15,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:36:15,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:36:15,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-04 09:36:15,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:36:15,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:36:15,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 09:36:16,017 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-03-04 09:36:16,017 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 [2025-03-04 09:36:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:36:16,446 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:36:16,446 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:36:16,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181191622] [2025-03-04 09:36:16,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181191622] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:36:16,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:36:16,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:36:16,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141471121] [2025-03-04 09:36:16,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:36:16,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:36:16,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:36:16,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:36:16,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:36:16,447 INFO L87 Difference]: Start difference. First operand 1583 states and 2115 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:36:18,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:36:18,574 INFO L93 Difference]: Finished difference Result 1588 states and 2121 transitions. [2025-03-04 09:36:18,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:36:18,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-03-04 09:36:18,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:36:18,577 INFO L225 Difference]: With dead ends: 1588 [2025-03-04 09:36:18,578 INFO L226 Difference]: Without dead ends: 1588 [2025-03-04 09:36:18,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:36:18,578 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 77 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:36:18,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 2637 Invalid, 1939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-04 09:36:18,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2025-03-04 09:36:18,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1588. [2025-03-04 09:36:18,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1186 states have (on average 1.7411467116357504) internal successors, (2065), 1557 states have internal predecessors, (2065), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-04 09:36:18,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2121 transitions. [2025-03-04 09:36:18,592 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2121 transitions. Word has length 61 [2025-03-04 09:36:18,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:36:18,592 INFO L471 AbstractCegarLoop]: Abstraction has 1588 states and 2121 transitions. [2025-03-04 09:36:18,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:36:18,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2121 transitions. [2025-03-04 09:36:18,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-04 09:36:18,593 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:36:18,593 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:36:18,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-04 09:36:18,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:18,794 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:36:18,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:36:18,794 INFO L85 PathProgramCache]: Analyzing trace with hash 869584104, now seen corresponding path program 1 times [2025-03-04 09:36:18,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:36:18,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596121250] [2025-03-04 09:36:18,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:36:18,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:18,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:36:18,797 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:36:18,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-04 09:36:18,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-04 09:36:18,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-04 09:36:18,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:36:18,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:36:18,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 09:36:18,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:36:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:36:19,090 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:36:19,090 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:36:19,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596121250] [2025-03-04 09:36:19,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596121250] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:36:19,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:36:19,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 09:36:19,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880868333] [2025-03-04 09:36:19,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:36:19,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:36:19,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:36:19,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:36:19,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:36:19,091 INFO L87 Difference]: Start difference. First operand 1588 states and 2121 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:36:19,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:36:19,150 INFO L93 Difference]: Finished difference Result 1596 states and 2129 transitions. [2025-03-04 09:36:19,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 09:36:19,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-03-04 09:36:19,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:36:19,153 INFO L225 Difference]: With dead ends: 1596 [2025-03-04 09:36:19,153 INFO L226 Difference]: Without dead ends: 1596 [2025-03-04 09:36:19,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-04 09:36:19,153 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 25 mSDsluCounter, 3705 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 4614 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:36:19,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 4614 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:36:19,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2025-03-04 09:36:19,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1595. [2025-03-04 09:36:19,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1191 states have (on average 1.7380352644836272) internal successors, (2070), 1563 states have internal predecessors, (2070), 31 states have call successors, (31), 11 states have call predecessors, (31), 8 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-04 09:36:19,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2128 transitions. [2025-03-04 09:36:19,169 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2128 transitions. Word has length 69 [2025-03-04 09:36:19,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:36:19,169 INFO L471 AbstractCegarLoop]: Abstraction has 1595 states and 2128 transitions. [2025-03-04 09:36:19,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:36:19,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2128 transitions. [2025-03-04 09:36:19,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-04 09:36:19,170 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:36:19,170 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:36:19,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-04 09:36:19,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:19,371 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr414REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:36:19,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:36:19,371 INFO L85 PathProgramCache]: Analyzing trace with hash -466928895, now seen corresponding path program 1 times [2025-03-04 09:36:19,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:36:19,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1947408518] [2025-03-04 09:36:19,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:36:19,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:19,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:36:19,373 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:36:19,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-04 09:36:19,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-04 09:36:19,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-04 09:36:19,566 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:36:19,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:36:19,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:36:19,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:36:19,691 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-04 09:36:19,692 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 [2025-03-04 09:36:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:36:19,696 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:36:19,697 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:36:19,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947408518] [2025-03-04 09:36:19,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947408518] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:36:19,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:36:19,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:36:19,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526368442] [2025-03-04 09:36:19,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:36:19,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:36:19,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:36:19,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:36:19,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:36:19,698 INFO L87 Difference]: Start difference. First operand 1595 states and 2128 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2025-03-04 09:36:24,059 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] [2025-03-04 09:36:26,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:36:26,250 INFO L93 Difference]: Finished difference Result 1986 states and 2634 transitions. [2025-03-04 09:36:26,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:36:26,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 72 [2025-03-04 09:36:26,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:36:26,253 INFO L225 Difference]: With dead ends: 1986 [2025-03-04 09:36:26,254 INFO L226 Difference]: Without dead ends: 1986 [2025-03-04 09:36:26,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:36:26,254 INFO L435 NwaCegarLoop]: 483 mSDtfsCounter, 757 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 27 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:36:26,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 1585 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1562 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2025-03-04 09:36:26,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2025-03-04 09:36:26,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1592. [2025-03-04 09:36:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1191 states have (on average 1.7329974811083124) internal successors, (2064), 1560 states have internal predecessors, (2064), 31 states have call successors, (31), 11 states have call predecessors, (31), 8 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-04 09:36:26,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2122 transitions. [2025-03-04 09:36:26,277 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2122 transitions. Word has length 72 [2025-03-04 09:36:26,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:36:26,278 INFO L471 AbstractCegarLoop]: Abstraction has 1592 states and 2122 transitions. [2025-03-04 09:36:26,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2025-03-04 09:36:26,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2122 transitions. [2025-03-04 09:36:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-04 09:36:26,278 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:36:26,278 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:36:26,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-04 09:36:26,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:26,479 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr415REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:36:26,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:36:26,479 INFO L85 PathProgramCache]: Analyzing trace with hash -466928894, now seen corresponding path program 1 times [2025-03-04 09:36:26,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:36:26,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070047687] [2025-03-04 09:36:26,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:36:26,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:26,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:36:26,481 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:36:26,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-04 09:36:26,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-04 09:36:26,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-04 09:36:26,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:36:26,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:36:26,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-04 09:36:26,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:36:26,702 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 [2025-03-04 09:36:26,997 WARN L873 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |alt_malloc_#res.base| (select |c_#length| |alt_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |alt_malloc_#res.base|)))) is different from true [2025-03-04 09:36:27,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:36:27,009 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 [2025-03-04 09:36:27,017 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:36:27,018 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 [2025-03-04 09:36:27,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:36:27,020 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:36:27,020 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:36:27,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070047687] [2025-03-04 09:36:27,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070047687] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:36:27,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:36:27,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:36:27,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386672159] [2025-03-04 09:36:27,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:36:27,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:36:27,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:36:27,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:36:27,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2025-03-04 09:36:27,021 INFO L87 Difference]: Start difference. First operand 1592 states and 2122 transitions. Second operand has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 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) [2025-03-04 09:36:30,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:36:30,524 INFO L93 Difference]: Finished difference Result 2614 states and 3438 transitions. [2025-03-04 09:36:30,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:36:30,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 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 72 [2025-03-04 09:36:30,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:36:30,528 INFO L225 Difference]: With dead ends: 2614 [2025-03-04 09:36:30,528 INFO L226 Difference]: Without dead ends: 2614 [2025-03-04 09:36:30,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2025-03-04 09:36:30,528 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 884 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 3223 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 4950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1703 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:36:30,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 2635 Invalid, 4950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 3223 Invalid, 0 Unknown, 1703 Unchecked, 3.4s Time] [2025-03-04 09:36:30,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2025-03-04 09:36:30,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 1584. [2025-03-04 09:36:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1191 states have (on average 1.7195633921074727) internal successors, (2048), 1552 states have internal predecessors, (2048), 31 states have call successors, (31), 11 states have call predecessors, (31), 8 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-04 09:36:30,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2106 transitions. [2025-03-04 09:36:30,549 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2106 transitions. Word has length 72 [2025-03-04 09:36:30,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:36:30,550 INFO L471 AbstractCegarLoop]: Abstraction has 1584 states and 2106 transitions. [2025-03-04 09:36:30,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 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) [2025-03-04 09:36:30,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2106 transitions. [2025-03-04 09:36:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-04 09:36:30,550 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:36:30,550 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:36:30,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-04 09:36:30,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:30,751 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:36:30,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:36:30,751 INFO L85 PathProgramCache]: Analyzing trace with hash 653589655, now seen corresponding path program 1 times [2025-03-04 09:36:30,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:36:30,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [909870637] [2025-03-04 09:36:30,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:36:30,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:30,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:36:30,753 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:36:30,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-04 09:36:30,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-04 09:36:30,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-04 09:36:30,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:36:30,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:36:30,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 09:36:30,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:36:30,968 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 [2025-03-04 09:36:30,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2025-03-04 09:36:31,003 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 23 treesize of output 11 [2025-03-04 09:36:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:36:31,029 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:36:31,029 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:36:31,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909870637] [2025-03-04 09:36:31,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909870637] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:36:31,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:36:31,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 09:36:31,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192394772] [2025-03-04 09:36:31,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:36:31,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:36:31,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:36:31,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:36:31,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:36:31,030 INFO L87 Difference]: Start difference. First operand 1584 states and 2106 transitions. Second operand has 8 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:36:33,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:36:33,046 INFO L93 Difference]: Finished difference Result 1599 states and 2122 transitions. [2025-03-04 09:36:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:36:33,046 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2025-03-04 09:36:33,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:36:33,048 INFO L225 Difference]: With dead ends: 1599 [2025-03-04 09:36:33,048 INFO L226 Difference]: Without dead ends: 1599 [2025-03-04 09:36:33,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-04 09:36:33,049 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 16 mSDsluCounter, 3008 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3903 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:36:33,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3903 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-04 09:36:33,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2025-03-04 09:36:33,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1598. [2025-03-04 09:36:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1203 states have (on average 1.71571072319202) internal successors, (2064), 1564 states have internal predecessors, (2064), 31 states have call successors, (31), 13 states have call predecessors, (31), 10 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-04 09:36:33,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2122 transitions. [2025-03-04 09:36:33,068 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2122 transitions. Word has length 79 [2025-03-04 09:36:33,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:36:33,068 INFO L471 AbstractCegarLoop]: Abstraction has 1598 states and 2122 transitions. [2025-03-04 09:36:33,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:36:33,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2122 transitions. [2025-03-04 09:36:33,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-04 09:36:33,069 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:36:33,069 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:36:33,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-04 09:36:33,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:33,270 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:36:33,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:36:33,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1213557171, now seen corresponding path program 1 times [2025-03-04 09:36:33,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:36:33,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953212379] [2025-03-04 09:36:33,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:36:33,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:33,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:36:33,272 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:36:33,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-04 09:36:33,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-04 09:36:33,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-04 09:36:33,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:36:33,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:36:33,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-04 09:36:33,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:36:33,508 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 [2025-03-04 09:36:33,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2025-03-04 09:36:33,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2025-03-04 09:36:33,557 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 21 treesize of output 9 [2025-03-04 09:36:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:36:33,601 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:36:33,601 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:36:33,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953212379] [2025-03-04 09:36:33,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953212379] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:36:33,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:36:33,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-04 09:36:33,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146091478] [2025-03-04 09:36:33,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:36:33,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 09:36:33,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:36:33,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 09:36:33,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-04 09:36:33,602 INFO L87 Difference]: Start difference. First operand 1598 states and 2122 transitions. Second operand has 9 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:36:36,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:36:36,288 INFO L93 Difference]: Finished difference Result 1598 states and 2120 transitions. [2025-03-04 09:36:36,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:36:36,289 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 80 [2025-03-04 09:36:36,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:36:36,291 INFO L225 Difference]: With dead ends: 1598 [2025-03-04 09:36:36,291 INFO L226 Difference]: Without dead ends: 1598 [2025-03-04 09:36:36,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-04 09:36:36,292 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 13 mSDsluCounter, 3706 mSDsCounter, 0 mSdLazyCounter, 2624 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4597 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:36:36,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4597 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2624 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-04 09:36:36,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2025-03-04 09:36:36,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1598. [2025-03-04 09:36:36,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1203 states have (on average 1.71404821280133) internal successors, (2062), 1564 states have internal predecessors, (2062), 31 states have call successors, (31), 13 states have call predecessors, (31), 10 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-04 09:36:36,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2120 transitions. [2025-03-04 09:36:36,302 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2120 transitions. Word has length 80 [2025-03-04 09:36:36,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:36:36,302 INFO L471 AbstractCegarLoop]: Abstraction has 1598 states and 2120 transitions. [2025-03-04 09:36:36,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:36:36,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2120 transitions. [2025-03-04 09:36:36,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-04 09:36:36,303 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:36:36,303 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:36:36,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-03-04 09:36:36,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:36,503 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr406REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:36:36,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:36:36,504 INFO L85 PathProgramCache]: Analyzing trace with hash 120794811, now seen corresponding path program 1 times [2025-03-04 09:36:36,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:36:36,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788932422] [2025-03-04 09:36:36,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:36:36,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:36,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:36:36,506 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:36:36,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-04 09:36:36,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-04 09:36:36,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-04 09:36:36,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:36:36,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:36:36,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 09:36:36,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:36:36,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2025-03-04 09:36:36,769 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 23 treesize of output 11 [2025-03-04 09:36:36,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:36:36,777 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:36:36,777 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:36:36,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788932422] [2025-03-04 09:36:36,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788932422] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:36:36,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:36:36,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 09:36:36,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109981000] [2025-03-04 09:36:36,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:36:36,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:36:36,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:36:36,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:36:36,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:36:36,778 INFO L87 Difference]: Start difference. First operand 1598 states and 2120 transitions. Second operand has 8 states, 6 states have (on average 13.5) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 09:36:39,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:36:39,029 INFO L93 Difference]: Finished difference Result 1629 states and 2160 transitions. [2025-03-04 09:36:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:36:39,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 13.5) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 87 [2025-03-04 09:36:39,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:36:39,032 INFO L225 Difference]: With dead ends: 1629 [2025-03-04 09:36:39,032 INFO L226 Difference]: Without dead ends: 1629 [2025-03-04 09:36:39,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-03-04 09:36:39,033 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 43 mSDsluCounter, 3410 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 4267 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:36:39,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 4267 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-04 09:36:39,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2025-03-04 09:36:39,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1612. [2025-03-04 09:36:39,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1215 states have (on average 1.7102880658436215) internal successors, (2078), 1576 states have internal predecessors, (2078), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 24 states have call predecessors, (29), 27 states have call successors, (29) [2025-03-04 09:36:39,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2138 transitions. [2025-03-04 09:36:39,046 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2138 transitions. Word has length 87 [2025-03-04 09:36:39,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:36:39,046 INFO L471 AbstractCegarLoop]: Abstraction has 1612 states and 2138 transitions. [2025-03-04 09:36:39,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 13.5) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 09:36:39,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2138 transitions. [2025-03-04 09:36:39,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-04 09:36:39,047 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:36:39,047 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:36:39,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-04 09:36:39,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:39,248 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr407REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:36:39,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:36:39,248 INFO L85 PathProgramCache]: Analyzing trace with hash 120794812, now seen corresponding path program 1 times [2025-03-04 09:36:39,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:36:39,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1663692910] [2025-03-04 09:36:39,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:36:39,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:39,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:36:39,250 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:36:39,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-04 09:36:39,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-04 09:36:39,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-04 09:36:39,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:36:39,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:36:39,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:36:39,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:36:39,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:36:39,500 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:36:39,500 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:36:39,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663692910] [2025-03-04 09:36:39,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663692910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:36:39,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:36:39,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:36:39,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098628728] [2025-03-04 09:36:39,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:36:39,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:36:39,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:36:39,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:36:39,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:36:39,501 INFO L87 Difference]: Start difference. First operand 1612 states and 2138 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-04 09:36:39,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:36:39,548 INFO L93 Difference]: Finished difference Result 1614 states and 2138 transitions. [2025-03-04 09:36:39,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:36:39,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 87 [2025-03-04 09:36:39,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:36:39,552 INFO L225 Difference]: With dead ends: 1614 [2025-03-04 09:36:39,553 INFO L226 Difference]: Without dead ends: 1608 [2025-03-04 09:36:39,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:36:39,553 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 3 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:36:39,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3584 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:36:39,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2025-03-04 09:36:39,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1608. [2025-03-04 09:36:39,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1211 states have (on average 1.7109826589595376) internal successors, (2072), 1574 states have internal predecessors, (2072), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 22 states have call predecessors, (29), 27 states have call successors, (29) [2025-03-04 09:36:39,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2132 transitions. [2025-03-04 09:36:39,571 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2132 transitions. Word has length 87 [2025-03-04 09:36:39,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:36:39,571 INFO L471 AbstractCegarLoop]: Abstraction has 1608 states and 2132 transitions. [2025-03-04 09:36:39,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-04 09:36:39,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2132 transitions. [2025-03-04 09:36:39,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-04 09:36:39,572 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:36:39,572 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:36:39,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-03-04 09:36:39,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:39,773 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr406REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:36:39,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:36:39,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1843111757, now seen corresponding path program 1 times [2025-03-04 09:36:39,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:36:39,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630557766] [2025-03-04 09:36:39,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:36:39,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:39,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:36:39,776 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:36:39,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-04 09:36:39,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-04 09:36:40,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-04 09:36:40,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:36:40,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:36:40,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:36:40,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:36:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:36:40,046 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:36:40,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:36:40,112 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:36:40,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630557766] [2025-03-04 09:36:40,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630557766] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:36:40,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:36:40,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2025-03-04 09:36:40,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391184817] [2025-03-04 09:36:40,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:36:40,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 09:36:40,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:36:40,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 09:36:40,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-03-04 09:36:40,113 INFO L87 Difference]: Start difference. First operand 1608 states and 2132 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-04 09:36:40,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:36:40,242 INFO L93 Difference]: Finished difference Result 1634 states and 2162 transitions. [2025-03-04 09:36:40,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 09:36:40,243 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 88 [2025-03-04 09:36:40,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:36:40,245 INFO L225 Difference]: With dead ends: 1634 [2025-03-04 09:36:40,245 INFO L226 Difference]: Without dead ends: 1622 [2025-03-04 09:36:40,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2025-03-04 09:36:40,246 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 24 mSDsluCounter, 3581 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:36:40,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 4481 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:36:40,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2025-03-04 09:36:40,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1616. [2025-03-04 09:36:40,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1219 states have (on average 1.7079573420836751) internal successors, (2082), 1582 states have internal predecessors, (2082), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 22 states have call predecessors, (29), 27 states have call successors, (29) [2025-03-04 09:36:40,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2142 transitions. [2025-03-04 09:36:40,261 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2142 transitions. Word has length 88 [2025-03-04 09:36:40,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:36:40,261 INFO L471 AbstractCegarLoop]: Abstraction has 1616 states and 2142 transitions. [2025-03-04 09:36:40,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-04 09:36:40,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2142 transitions. [2025-03-04 09:36:40,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-04 09:36:40,262 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:36:40,262 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:36:40,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-04 09:36:40,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:40,463 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr406REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2025-03-04 09:36:40,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:36:40,463 INFO L85 PathProgramCache]: Analyzing trace with hash -819336005, now seen corresponding path program 2 times [2025-03-04 09:36:40,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:36:40,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011820087] [2025-03-04 09:36:40,464 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:36:40,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:36:40,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:36:40,465 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:36:40,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-04 09:36:40,617 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 91 statements into 2 equivalence classes.