./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/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) )\nCHECK( init(main()), LTL(G valid-deref) )\nCHECK( init(main()), LTL(G valid-memtrack) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '8d4416b38cd75f122474354d64a020f92e3751959548582c6308a6e879679f77'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 8d4416b38cd75f122474354d64a020f92e3751959548582c6308a6e879679f77 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 18:58:22,736 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 18:58:22,823 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 18:58:22,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 18:58:22,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 18:58:22,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 18:58:22,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 18:58:22,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 18:58:22,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 18:58:22,860 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 18:58:22,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 18:58:22,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 18:58:22,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 18:58:22,861 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 18:58:22,861 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 18:58:22,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 18:58:22,861 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 18:58:22,861 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 18:58:22,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 18:58:22,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 18:58:22,862 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 18:58:22,862 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 18:58:22,862 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 18:58:22,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 18:58:22,862 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 18:58:22,862 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 18:58:22,862 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 18:58:22,862 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 18:58:22,862 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 18:58:22,862 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 18:58:22,862 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 18:58:22,862 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 18:58:22,862 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 18:58:22,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 18:58:22,862 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 18:58:22,863 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 18:58:22,863 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 18:58:22,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 18:58:22,863 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 18:58:22,863 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 18:58:22,863 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 18:58:22,863 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 18:58:22,863 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-jdk21/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 -> 8d4416b38cd75f122474354d64a020f92e3751959548582c6308a6e879679f77 [2024-11-07 18:58:23,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 18:58:23,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 18:58:23,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 18:58:23,152 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 18:58:23,152 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 18:58:23,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i [2024-11-07 18:58:24,460 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 18:58:24,830 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 18:58:24,832 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i [2024-11-07 18:58:24,852 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/82c112240/72b1ead14dbb41b0ba51e8a492965489/FLAG90f6777d6 [2024-11-07 18:58:24,869 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/82c112240/72b1ead14dbb41b0ba51e8a492965489 [2024-11-07 18:58:24,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 18:58:24,874 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 18:58:24,876 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 18:58:24,876 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 18:58:24,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 18:58:24,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:58:24" (1/1) ... [2024-11-07 18:58:24,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527491a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:58:24, skipping insertion in model container [2024-11-07 18:58:24,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:58:24" (1/1) ... [2024-11-07 18:58:24,925 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 18:58:25,230 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 18:58:25,253 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 18:58:25,256 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 18:58:25,259 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 18:58:25,265 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 18:58:25,294 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 18:58:25,296 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 18:58:25,299 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 18:58:25,304 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 18:58:25,321 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 18:58:25,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 18:58:25,347 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 18:58:25,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 18:58:25,490 INFO L204 MainTranslator]: Completed translation [2024-11-07 18:58:25,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:58:25 WrapperNode [2024-11-07 18:58:25,491 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 18:58:25,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 18:58:25,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 18:58:25,491 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 18:58:25,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:58:25" (1/1) ... [2024-11-07 18:58:25,519 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:58:25" (1/1) ... [2024-11-07 18:58:25,576 INFO L138 Inliner]: procedures = 176, calls = 336, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1603 [2024-11-07 18:58:25,576 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 18:58:25,577 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 18:58:25,577 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 18:58:25,577 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 18:58:25,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:58:25" (1/1) ... [2024-11-07 18:58:25,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:58:25" (1/1) ... [2024-11-07 18:58:25,597 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:58:25" (1/1) ... [2024-11-07 18:58:25,708 INFO L175 MemorySlicer]: Split 309 memory accesses to 2 slices as follows [2, 307]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 82 writes are split as follows [0, 82]. [2024-11-07 18:58:25,708 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:58:25" (1/1) ... [2024-11-07 18:58:25,708 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:58:25" (1/1) ... [2024-11-07 18:58:25,759 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:58:25" (1/1) ... [2024-11-07 18:58:25,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:58:25" (1/1) ... [2024-11-07 18:58:25,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:58:25" (1/1) ... [2024-11-07 18:58:25,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:58:25" (1/1) ... [2024-11-07 18:58:25,807 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 18:58:25,808 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 18:58:25,808 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 18:58:25,808 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 18:58:25,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:58:25" (1/1) ... [2024-11-07 18:58:25,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 18:58:25,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 18:58:25,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 18:58:25,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 18:58:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 18:58:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 18:58:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-07 18:58:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-07 18:58:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 18:58:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 18:58:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-07 18:58:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-07 18:58:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-07 18:58:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-07 18:58:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 18:58:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 18:58:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-07 18:58:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-07 18:58:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-07 18:58:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-07 18:58:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 18:58:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 18:58:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 18:58:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 18:58:25,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 18:58:26,124 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 18:58:26,126 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 18:58:26,129 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-07 18:58:26,173 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-07 18:58:28,596 INFO L? ?]: Removed 1502 outVars from TransFormulas that were not future-live. [2024-11-07 18:58:28,596 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 18:58:28,639 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 18:58:28,639 INFO L316 CfgBuilder]: Removed 60 assume(true) statements. [2024-11-07 18:58:28,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:58:28 BoogieIcfgContainer [2024-11-07 18:58:28,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 18:58:28,642 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 18:58:28,642 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 18:58:28,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 18:58:28,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:58:24" (1/3) ... [2024-11-07 18:58:28,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbaf578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:58:28, skipping insertion in model container [2024-11-07 18:58:28,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:58:25" (2/3) ... [2024-11-07 18:58:28,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbaf578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:58:28, skipping insertion in model container [2024-11-07 18:58:28,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:58:28" (3/3) ... [2024-11-07 18:58:28,649 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test4-1.i [2024-11-07 18:58:28,662 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 18:58:28,662 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 628 error locations. [2024-11-07 18:58:28,722 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 18:58:28,732 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;@21e4fb4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 18:58:28,733 INFO L334 AbstractCegarLoop]: Starting to check reachability of 628 error locations. [2024-11-07 18:58:28,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 1452 states, 811 states have (on average 2.0752157829839706) internal successors, (1683), 1443 states have internal predecessors, (1683), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 18:58:28,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-07 18:58:28,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:28,746 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 18:58:28,747 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:28,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:28,751 INFO L85 PathProgramCache]: Analyzing trace with hash 45876316, now seen corresponding path program 1 times [2024-11-07 18:58:28,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:28,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916236732] [2024-11-07 18:58:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:28,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:28,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:28,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916236732] [2024-11-07 18:58:28,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916236732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:58:28,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:58:28,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 18:58:28,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781342336] [2024-11-07 18:58:28,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:58:28,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 18:58:28,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:28,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 18:58:28,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 18:58:29,007 INFO L87 Difference]: Start difference. First operand has 1452 states, 811 states have (on average 2.0752157829839706) internal successors, (1683), 1443 states have internal predecessors, (1683), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:30,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:30,032 INFO L93 Difference]: Finished difference Result 1341 states and 1536 transitions. [2024-11-07 18:58:30,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 18:58:30,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2024-11-07 18:58:30,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:30,052 INFO L225 Difference]: With dead ends: 1341 [2024-11-07 18:58:30,052 INFO L226 Difference]: Without dead ends: 1339 [2024-11-07 18:58:30,054 INFO L431 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 [2024-11-07 18:58:30,056 INFO L432 NwaCegarLoop]: 922 mSDtfsCounter, 1366 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:30,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 935 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-07 18:58:30,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2024-11-07 18:58:30,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1337. [2024-11-07 18:58:30,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 801 states have (on average 1.8714107365792758) internal successors, (1499), 1328 states have internal predecessors, (1499), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 18:58:30,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1531 transitions. [2024-11-07 18:58:30,139 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1531 transitions. Word has length 5 [2024-11-07 18:58:30,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:30,139 INFO L471 AbstractCegarLoop]: Abstraction has 1337 states and 1531 transitions. [2024-11-07 18:58:30,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1531 transitions. [2024-11-07 18:58:30,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-07 18:58:30,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:30,140 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 18:58:30,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 18:58:30,141 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:30,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:30,141 INFO L85 PathProgramCache]: Analyzing trace with hash 45876317, now seen corresponding path program 1 times [2024-11-07 18:58:30,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:30,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614628218] [2024-11-07 18:58:30,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:30,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:30,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:30,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:30,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614628218] [2024-11-07 18:58:30,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614628218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:58:30,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:58:30,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 18:58:30,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330999261] [2024-11-07 18:58:30,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:58:30,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 18:58:30,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:30,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 18:58:30,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 18:58:30,286 INFO L87 Difference]: Start difference. First operand 1337 states and 1531 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:31,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:31,138 INFO L93 Difference]: Finished difference Result 1753 states and 2025 transitions. [2024-11-07 18:58:31,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 18:58:31,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2024-11-07 18:58:31,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:31,146 INFO L225 Difference]: With dead ends: 1753 [2024-11-07 18:58:31,146 INFO L226 Difference]: Without dead ends: 1753 [2024-11-07 18:58:31,147 INFO L431 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 [2024-11-07 18:58:31,149 INFO L432 NwaCegarLoop]: 1286 mSDtfsCounter, 820 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:31,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1947 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-07 18:58:31,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2024-11-07 18:58:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1600. [2024-11-07 18:58:31,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1074 states have (on average 1.8370577281191807) internal successors, (1973), 1591 states have internal predecessors, (1973), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 18:58:31,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2005 transitions. [2024-11-07 18:58:31,194 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2005 transitions. Word has length 5 [2024-11-07 18:58:31,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:31,195 INFO L471 AbstractCegarLoop]: Abstraction has 1600 states and 2005 transitions. [2024-11-07 18:58:31,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:31,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2005 transitions. [2024-11-07 18:58:31,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-07 18:58:31,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:31,195 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 18:58:31,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 18:58:31,195 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr620REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:31,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:31,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1424554157, now seen corresponding path program 1 times [2024-11-07 18:58:31,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:31,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685918039] [2024-11-07 18:58:31,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:31,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:31,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:31,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685918039] [2024-11-07 18:58:31,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685918039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:58:31,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:58:31,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 18:58:31,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030211702] [2024-11-07 18:58:31,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:58:31,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 18:58:31,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:31,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 18:58:31,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 18:58:31,251 INFO L87 Difference]: Start difference. First operand 1600 states and 2005 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:31,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:31,330 INFO L93 Difference]: Finished difference Result 3150 states and 3940 transitions. [2024-11-07 18:58:31,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 18:58:31,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-07 18:58:31,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:31,341 INFO L225 Difference]: With dead ends: 3150 [2024-11-07 18:58:31,341 INFO L226 Difference]: Without dead ends: 3150 [2024-11-07 18:58:31,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 18:58:31,342 INFO L432 NwaCegarLoop]: 2030 mSDtfsCounter, 1438 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 3546 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:31,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1444 Valid, 3546 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 18:58:31,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3150 states. [2024-11-07 18:58:31,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3150 to 1601. [2024-11-07 18:58:31,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1075 states have (on average 1.8362790697674418) internal successors, (1974), 1592 states have internal predecessors, (1974), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 18:58:31,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2006 transitions. [2024-11-07 18:58:31,382 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2006 transitions. Word has length 6 [2024-11-07 18:58:31,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:31,382 INFO L471 AbstractCegarLoop]: Abstraction has 1601 states and 2006 transitions. [2024-11-07 18:58:31,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:31,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2006 transitions. [2024-11-07 18:58:31,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-07 18:58:31,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:31,383 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 18:58:31,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 18:58:31,383 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:31,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:31,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1344610650, now seen corresponding path program 1 times [2024-11-07 18:58:31,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:31,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92602227] [2024-11-07 18:58:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:31,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:31,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:31,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:31,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92602227] [2024-11-07 18:58:31,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92602227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:58:31,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:58:31,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 18:58:31,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402155898] [2024-11-07 18:58:31,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:58:31,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 18:58:31,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:31,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 18:58:31,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 18:58:31,479 INFO L87 Difference]: Start difference. First operand 1601 states and 2006 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:32,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:32,567 INFO L93 Difference]: Finished difference Result 1627 states and 2059 transitions. [2024-11-07 18:58:32,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 18:58:32,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-07 18:58:32,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:32,574 INFO L225 Difference]: With dead ends: 1627 [2024-11-07 18:58:32,575 INFO L226 Difference]: Without dead ends: 1627 [2024-11-07 18:58:32,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 18:58:32,576 INFO L432 NwaCegarLoop]: 894 mSDtfsCounter, 1634 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:32,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 1633 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-07 18:58:32,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2024-11-07 18:58:32,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1578. [2024-11-07 18:58:32,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1075 states have (on average 1.8148837209302326) internal successors, (1951), 1569 states have internal predecessors, (1951), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 18:58:32,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 1983 transitions. [2024-11-07 18:58:32,610 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 1983 transitions. Word has length 11 [2024-11-07 18:58:32,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:32,610 INFO L471 AbstractCegarLoop]: Abstraction has 1578 states and 1983 transitions. [2024-11-07 18:58:32,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:32,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 1983 transitions. [2024-11-07 18:58:32,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-07 18:58:32,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:32,612 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 18:58:32,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 18:58:32,612 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:32,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:32,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1344610649, now seen corresponding path program 1 times [2024-11-07 18:58:32,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:32,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876379818] [2024-11-07 18:58:32,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:32,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:32,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:32,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:32,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876379818] [2024-11-07 18:58:32,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876379818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:58:32,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:58:32,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 18:58:32,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028080193] [2024-11-07 18:58:32,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:58:32,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 18:58:32,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:32,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 18:58:32,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 18:58:32,712 INFO L87 Difference]: Start difference. First operand 1578 states and 1983 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:32,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:32,747 INFO L93 Difference]: Finished difference Result 1503 states and 1880 transitions. [2024-11-07 18:58:32,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 18:58:32,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-07 18:58:32,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:32,753 INFO L225 Difference]: With dead ends: 1503 [2024-11-07 18:58:32,753 INFO L226 Difference]: Without dead ends: 1503 [2024-11-07 18:58:32,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 18:58:32,754 INFO L432 NwaCegarLoop]: 1383 mSDtfsCounter, 61 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:32,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 2713 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 18:58:32,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2024-11-07 18:58:32,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1503. [2024-11-07 18:58:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1012 states have (on average 1.826086956521739) internal successors, (1848), 1494 states have internal predecessors, (1848), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 18:58:32,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 1880 transitions. [2024-11-07 18:58:32,782 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 1880 transitions. Word has length 11 [2024-11-07 18:58:32,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:32,783 INFO L471 AbstractCegarLoop]: Abstraction has 1503 states and 1880 transitions. [2024-11-07 18:58:32,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:32,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 1880 transitions. [2024-11-07 18:58:32,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-07 18:58:32,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:32,783 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 18:58:32,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 18:58:32,786 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:32,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:32,786 INFO L85 PathProgramCache]: Analyzing trace with hash 614478435, now seen corresponding path program 1 times [2024-11-07 18:58:32,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:32,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499360106] [2024-11-07 18:58:32,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:32,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:32,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:32,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:32,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499360106] [2024-11-07 18:58:32,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499360106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:58:32,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:58:32,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 18:58:32,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837845658] [2024-11-07 18:58:32,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:58:32,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 18:58:32,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:32,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 18:58:32,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 18:58:32,870 INFO L87 Difference]: Start difference. First operand 1503 states and 1880 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) [2024-11-07 18:58:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:32,931 INFO L93 Difference]: Finished difference Result 1485 states and 1855 transitions. [2024-11-07 18:58:32,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 18:58:32,932 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 [2024-11-07 18:58:32,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:32,937 INFO L225 Difference]: With dead ends: 1485 [2024-11-07 18:58:32,937 INFO L226 Difference]: Without dead ends: 1485 [2024-11-07 18:58:32,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 18:58:32,938 INFO L432 NwaCegarLoop]: 1348 mSDtfsCounter, 41 mSDsluCounter, 2668 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 4016 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:32,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 4016 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 18:58:32,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2024-11-07 18:58:32,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1482. [2024-11-07 18:58:32,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 998 states have (on average 1.8236472945891784) internal successors, (1820), 1473 states have internal predecessors, (1820), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 18:58:32,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1852 transitions. [2024-11-07 18:58:32,964 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1852 transitions. Word has length 13 [2024-11-07 18:58:32,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:32,965 INFO L471 AbstractCegarLoop]: Abstraction has 1482 states and 1852 transitions. [2024-11-07 18:58:32,965 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) [2024-11-07 18:58:32,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1852 transitions. [2024-11-07 18:58:32,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-07 18:58:32,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:32,966 INFO L215 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] [2024-11-07 18:58:32,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 18:58:32,966 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:32,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:32,966 INFO L85 PathProgramCache]: Analyzing trace with hash 530126353, now seen corresponding path program 1 times [2024-11-07 18:58:32,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:32,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265974261] [2024-11-07 18:58:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:33,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:33,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265974261] [2024-11-07 18:58:33,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265974261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:58:33,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:58:33,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 18:58:33,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339073986] [2024-11-07 18:58:33,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:58:33,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 18:58:33,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:33,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 18:58:33,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 18:58:33,181 INFO L87 Difference]: Start difference. First operand 1482 states and 1852 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:34,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:34,314 INFO L93 Difference]: Finished difference Result 1680 states and 1944 transitions. [2024-11-07 18:58:34,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 18:58:34,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-07 18:58:34,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:34,319 INFO L225 Difference]: With dead ends: 1680 [2024-11-07 18:58:34,319 INFO L226 Difference]: Without dead ends: 1680 [2024-11-07 18:58:34,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 18:58:34,319 INFO L432 NwaCegarLoop]: 1168 mSDtfsCounter, 825 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:34,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 2596 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-07 18:58:34,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2024-11-07 18:58:34,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1478. [2024-11-07 18:58:34,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 998 states have (on average 1.8196392785571143) internal successors, (1816), 1469 states have internal predecessors, (1816), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 18:58:34,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1848 transitions. [2024-11-07 18:58:34,341 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1848 transitions. Word has length 27 [2024-11-07 18:58:34,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:34,341 INFO L471 AbstractCegarLoop]: Abstraction has 1478 states and 1848 transitions. [2024-11-07 18:58:34,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:34,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1848 transitions. [2024-11-07 18:58:34,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-07 18:58:34,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:34,343 INFO L215 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] [2024-11-07 18:58:34,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 18:58:34,343 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:34,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:34,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1653190907, now seen corresponding path program 1 times [2024-11-07 18:58:34,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:34,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884855391] [2024-11-07 18:58:34,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:34,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:34,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:34,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884855391] [2024-11-07 18:58:34,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884855391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:58:34,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:58:34,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 18:58:34,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748968154] [2024-11-07 18:58:34,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:58:34,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 18:58:34,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:34,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 18:58:34,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 18:58:34,476 INFO L87 Difference]: Start difference. First operand 1478 states and 1848 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:34,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:34,533 INFO L93 Difference]: Finished difference Result 1478 states and 1844 transitions. [2024-11-07 18:58:34,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 18:58:34,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 61 [2024-11-07 18:58:34,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:34,538 INFO L225 Difference]: With dead ends: 1478 [2024-11-07 18:58:34,538 INFO L226 Difference]: Without dead ends: 1478 [2024-11-07 18:58:34,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 18:58:34,539 INFO L432 NwaCegarLoop]: 1343 mSDtfsCounter, 21 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3998 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:34,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 3998 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 18:58:34,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2024-11-07 18:58:34,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1478. [2024-11-07 18:58:34,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 998 states have (on average 1.8156312625250501) internal successors, (1812), 1469 states have internal predecessors, (1812), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 18:58:34,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1844 transitions. [2024-11-07 18:58:34,564 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1844 transitions. Word has length 61 [2024-11-07 18:58:34,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:34,564 INFO L471 AbstractCegarLoop]: Abstraction has 1478 states and 1844 transitions. [2024-11-07 18:58:34,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:34,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1844 transitions. [2024-11-07 18:58:34,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-07 18:58:34,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:34,568 INFO L215 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] [2024-11-07 18:58:34,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 18:58:34,568 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:34,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:34,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1854806959, now seen corresponding path program 1 times [2024-11-07 18:58:34,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:34,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368858298] [2024-11-07 18:58:34,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:34,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:34,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:34,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368858298] [2024-11-07 18:58:34,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368858298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:58:34,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:58:34,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 18:58:34,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614768788] [2024-11-07 18:58:34,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:58:34,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 18:58:34,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:34,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 18:58:34,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 18:58:34,715 INFO L87 Difference]: Start difference. First operand 1478 states and 1844 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:34,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:34,756 INFO L93 Difference]: Finished difference Result 1570 states and 1963 transitions. [2024-11-07 18:58:34,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 18:58:34,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2024-11-07 18:58:34,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:34,764 INFO L225 Difference]: With dead ends: 1570 [2024-11-07 18:58:34,764 INFO L226 Difference]: Without dead ends: 1570 [2024-11-07 18:58:34,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 18:58:34,765 INFO L432 NwaCegarLoop]: 1358 mSDtfsCounter, 54 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:34,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2689 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 18:58:34,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2024-11-07 18:58:34,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1570. [2024-11-07 18:58:34,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1570 states, 1090 states have (on average 1.771559633027523) internal successors, (1931), 1561 states have internal predecessors, (1931), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 18:58:34,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 1963 transitions. [2024-11-07 18:58:34,813 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 1963 transitions. Word has length 69 [2024-11-07 18:58:34,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:34,814 INFO L471 AbstractCegarLoop]: Abstraction has 1570 states and 1963 transitions. [2024-11-07 18:58:34,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:34,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 1963 transitions. [2024-11-07 18:58:34,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-07 18:58:34,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:34,817 INFO L215 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] [2024-11-07 18:58:34,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 18:58:34,818 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:34,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:34,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1907003630, now seen corresponding path program 1 times [2024-11-07 18:58:34,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:34,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730531918] [2024-11-07 18:58:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:34,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:35,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:35,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:35,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730531918] [2024-11-07 18:58:35,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730531918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:58:35,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:58:35,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 18:58:35,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760764797] [2024-11-07 18:58:35,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:58:35,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 18:58:35,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:35,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 18:58:35,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-07 18:58:35,324 INFO L87 Difference]: Start difference. First operand 1570 states and 1963 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:36,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:36,375 INFO L93 Difference]: Finished difference Result 1486 states and 1879 transitions. [2024-11-07 18:58:36,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 18:58:36,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 7 states have internal predecessors, (72), 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 72 [2024-11-07 18:58:36,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:36,380 INFO L225 Difference]: With dead ends: 1486 [2024-11-07 18:58:36,380 INFO L226 Difference]: Without dead ends: 1486 [2024-11-07 18:58:36,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-07 18:58:36,381 INFO L432 NwaCegarLoop]: 611 mSDtfsCounter, 2272 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:36,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 1223 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-07 18:58:36,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2024-11-07 18:58:36,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1213. [2024-11-07 18:58:36,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 817 states have (on average 1.6682986536107711) internal successors, (1363), 1204 states have internal predecessors, (1363), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 18:58:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1395 transitions. [2024-11-07 18:58:36,413 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1395 transitions. Word has length 72 [2024-11-07 18:58:36,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:36,413 INFO L471 AbstractCegarLoop]: Abstraction has 1213 states and 1395 transitions. [2024-11-07 18:58:36,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:36,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1395 transitions. [2024-11-07 18:58:36,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-07 18:58:36,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:36,414 INFO L215 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] [2024-11-07 18:58:36,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 18:58:36,415 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:36,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:36,416 INFO L85 PathProgramCache]: Analyzing trace with hash -954300764, now seen corresponding path program 1 times [2024-11-07 18:58:36,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:36,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472664778] [2024-11-07 18:58:36,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:36,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:36,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:36,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472664778] [2024-11-07 18:58:36,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472664778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:58:36,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:58:36,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 18:58:36,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487252142] [2024-11-07 18:58:36,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:58:36,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 18:58:36,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:36,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 18:58:36,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 18:58:36,702 INFO L87 Difference]: Start difference. First operand 1213 states and 1395 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:37,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:37,497 INFO L93 Difference]: Finished difference Result 1212 states and 1394 transitions. [2024-11-07 18:58:37,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 18:58:37,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2024-11-07 18:58:37,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:37,500 INFO L225 Difference]: With dead ends: 1212 [2024-11-07 18:58:37,501 INFO L226 Difference]: Without dead ends: 1212 [2024-11-07 18:58:37,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 18:58:37,501 INFO L432 NwaCegarLoop]: 1270 mSDtfsCounter, 2 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3620 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:37,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3620 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-07 18:58:37,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2024-11-07 18:58:37,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1212. [2024-11-07 18:58:37,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 817 states have (on average 1.6670746634026927) internal successors, (1362), 1203 states have internal predecessors, (1362), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 18:58:37,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1394 transitions. [2024-11-07 18:58:37,516 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1394 transitions. Word has length 77 [2024-11-07 18:58:37,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:37,517 INFO L471 AbstractCegarLoop]: Abstraction has 1212 states and 1394 transitions. [2024-11-07 18:58:37,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:37,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1394 transitions. [2024-11-07 18:58:37,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-07 18:58:37,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:37,518 INFO L215 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] [2024-11-07 18:58:37,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 18:58:37,518 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:37,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:37,519 INFO L85 PathProgramCache]: Analyzing trace with hash -954300763, now seen corresponding path program 1 times [2024-11-07 18:58:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:37,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480317204] [2024-11-07 18:58:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:37,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:37,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:37,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480317204] [2024-11-07 18:58:37,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480317204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:58:37,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:58:37,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 18:58:37,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030670185] [2024-11-07 18:58:37,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:58:37,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 18:58:37,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:37,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 18:58:37,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 18:58:37,963 INFO L87 Difference]: Start difference. First operand 1212 states and 1394 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:39,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:39,008 INFO L93 Difference]: Finished difference Result 1211 states and 1393 transitions. [2024-11-07 18:58:39,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 18:58:39,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2024-11-07 18:58:39,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:39,012 INFO L225 Difference]: With dead ends: 1211 [2024-11-07 18:58:39,012 INFO L226 Difference]: Without dead ends: 1211 [2024-11-07 18:58:39,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 18:58:39,012 INFO L432 NwaCegarLoop]: 1270 mSDtfsCounter, 1 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3635 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:39,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3635 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-07 18:58:39,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2024-11-07 18:58:39,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1211. [2024-11-07 18:58:39,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 816 states have (on average 1.6678921568627452) internal successors, (1361), 1202 states have internal predecessors, (1361), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 18:58:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1393 transitions. [2024-11-07 18:58:39,025 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1393 transitions. Word has length 77 [2024-11-07 18:58:39,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:39,025 INFO L471 AbstractCegarLoop]: Abstraction has 1211 states and 1393 transitions. [2024-11-07 18:58:39,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 18:58:39,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1393 transitions. [2024-11-07 18:58:39,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-07 18:58:39,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:39,026 INFO L215 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] [2024-11-07 18:58:39,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 18:58:39,026 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:39,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:39,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1975894987, now seen corresponding path program 1 times [2024-11-07 18:58:39,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:39,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550241822] [2024-11-07 18:58:39,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:39,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:39,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 18:58:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:39,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:39,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550241822] [2024-11-07 18:58:39,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550241822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:58:39,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:58:39,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 18:58:39,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565828233] [2024-11-07 18:58:39,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:58:39,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 18:58:39,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:39,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 18:58:39,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 18:58:39,256 INFO L87 Difference]: Start difference. First operand 1211 states and 1393 transitions. Second operand has 7 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:58:40,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:40,629 INFO L93 Difference]: Finished difference Result 1223 states and 1411 transitions. [2024-11-07 18:58:40,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 18:58:40,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2024-11-07 18:58:40,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:40,633 INFO L225 Difference]: With dead ends: 1223 [2024-11-07 18:58:40,634 INFO L226 Difference]: Without dead ends: 1223 [2024-11-07 18:58:40,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-07 18:58:40,635 INFO L432 NwaCegarLoop]: 1253 mSDtfsCounter, 16 mSDsluCounter, 4251 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 5504 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:40,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 5504 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-07 18:58:40,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2024-11-07 18:58:40,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1217. [2024-11-07 18:58:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 821 states have (on average 1.66626065773447) internal successors, (1368), 1207 states have internal predecessors, (1368), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-07 18:58:40,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1406 transitions. [2024-11-07 18:58:40,651 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1406 transitions. Word has length 85 [2024-11-07 18:58:40,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:40,651 INFO L471 AbstractCegarLoop]: Abstraction has 1217 states and 1406 transitions. [2024-11-07 18:58:40,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:58:40,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1406 transitions. [2024-11-07 18:58:40,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-07 18:58:40,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:40,652 INFO L215 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] [2024-11-07 18:58:40,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 18:58:40,652 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:40,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:40,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1975894988, now seen corresponding path program 1 times [2024-11-07 18:58:40,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:40,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450300403] [2024-11-07 18:58:40,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:40,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:41,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 18:58:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:41,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:41,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:41,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450300403] [2024-11-07 18:58:41,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450300403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:58:41,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:58:41,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 18:58:41,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183376026] [2024-11-07 18:58:41,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:58:41,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 18:58:41,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:41,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 18:58:41,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 18:58:41,168 INFO L87 Difference]: Start difference. First operand 1217 states and 1406 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:58:42,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:42,226 INFO L93 Difference]: Finished difference Result 1217 states and 1405 transitions. [2024-11-07 18:58:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 18:58:42,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2024-11-07 18:58:42,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:42,229 INFO L225 Difference]: With dead ends: 1217 [2024-11-07 18:58:42,229 INFO L226 Difference]: Without dead ends: 1217 [2024-11-07 18:58:42,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-07 18:58:42,229 INFO L432 NwaCegarLoop]: 1260 mSDtfsCounter, 17 mSDsluCounter, 3348 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:42,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4608 Invalid, 1757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-07 18:58:42,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2024-11-07 18:58:42,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2024-11-07 18:58:42,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 821 states have (on average 1.6650426309378807) internal successors, (1367), 1207 states have internal predecessors, (1367), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-07 18:58:42,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1405 transitions. [2024-11-07 18:58:42,244 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1405 transitions. Word has length 85 [2024-11-07 18:58:42,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:42,244 INFO L471 AbstractCegarLoop]: Abstraction has 1217 states and 1405 transitions. [2024-11-07 18:58:42,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:58:42,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1405 transitions. [2024-11-07 18:58:42,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-07 18:58:42,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:42,245 INFO L215 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] [2024-11-07 18:58:42,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 18:58:42,246 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:42,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:42,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1271351474, now seen corresponding path program 1 times [2024-11-07 18:58:42,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:42,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338237236] [2024-11-07 18:58:42,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:42,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:42,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 18:58:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:42,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:42,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338237236] [2024-11-07 18:58:42,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338237236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 18:58:42,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873605979] [2024-11-07 18:58:42,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:42,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 18:58:42,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 18:58:42,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 18:58:42,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 18:58:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:42,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 18:58:42,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 18:58:42,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 18:58:43,104 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 18:58:43,105 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 11 treesize of output 11 [2024-11-07 18:58:43,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-07 18:58:43,195 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:58:43,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-07 18:58:43,224 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 31 treesize of output 13 [2024-11-07 18:58:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:43,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 18:58:43,278 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-07 18:58:43,279 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 21 treesize of output 20 [2024-11-07 18:58:43,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873605979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 18:58:43,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 18:58:43,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 14 [2024-11-07 18:58:43,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108492726] [2024-11-07 18:58:43,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 18:58:43,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 18:58:43,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:43,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 18:58:43,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=194, Unknown=8, NotChecked=0, Total=240 [2024-11-07 18:58:43,323 INFO L87 Difference]: Start difference. First operand 1217 states and 1405 transitions. Second operand has 15 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 18:58:45,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:45,898 INFO L93 Difference]: Finished difference Result 1216 states and 1404 transitions. [2024-11-07 18:58:45,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 18:58:45,898 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 86 [2024-11-07 18:58:45,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:45,901 INFO L225 Difference]: With dead ends: 1216 [2024-11-07 18:58:45,901 INFO L226 Difference]: Without dead ends: 1216 [2024-11-07 18:58:45,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=450, Unknown=9, NotChecked=0, Total=552 [2024-11-07 18:58:45,902 INFO L432 NwaCegarLoop]: 780 mSDtfsCounter, 1170 mSDsluCounter, 8162 mSDsCounter, 0 mSdLazyCounter, 6239 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 8942 SdHoareTripleChecker+Invalid, 6270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 6239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:45,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 8942 Invalid, 6270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 6239 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-07 18:58:45,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2024-11-07 18:58:45,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1216. [2024-11-07 18:58:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 821 states have (on average 1.6638246041412912) internal successors, (1366), 1206 states have internal predecessors, (1366), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-07 18:58:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1404 transitions. [2024-11-07 18:58:45,920 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1404 transitions. Word has length 86 [2024-11-07 18:58:45,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:45,920 INFO L471 AbstractCegarLoop]: Abstraction has 1216 states and 1404 transitions. [2024-11-07 18:58:45,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 18:58:45,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1404 transitions. [2024-11-07 18:58:45,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-07 18:58:45,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:45,921 INFO L215 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] [2024-11-07 18:58:45,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 18:58:46,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-07 18:58:46,126 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:46,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:46,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1271351475, now seen corresponding path program 1 times [2024-11-07 18:58:46,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:46,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37207633] [2024-11-07 18:58:46,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:46,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:46,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 18:58:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:46,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:46,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37207633] [2024-11-07 18:58:46,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37207633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 18:58:46,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582431414] [2024-11-07 18:58:46,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:46,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 18:58:46,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 18:58:46,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 18:58:46,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 18:58:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:46,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-07 18:58:47,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 18:58:47,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 18:58:47,118 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 18:58:47,118 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 11 treesize of output 11 [2024-11-07 18:58:47,147 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 [2024-11-07 18:58:47,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-07 18:58:47,346 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:58:47,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 65 [2024-11-07 18:58:47,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 49 treesize of output 30 [2024-11-07 18:58:47,397 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 39 treesize of output 21 [2024-11-07 18:58:47,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 32 treesize of output 14 [2024-11-07 18:58:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:47,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 18:58:47,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 18:58:47,561 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 48 treesize of output 52 [2024-11-07 18:58:47,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582431414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 18:58:47,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 18:58:47,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2024-11-07 18:58:47,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616639091] [2024-11-07 18:58:47,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 18:58:47,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 18:58:47,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:47,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 18:58:47,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=427, Unknown=12, NotChecked=0, Total=506 [2024-11-07 18:58:47,667 INFO L87 Difference]: Start difference. First operand 1216 states and 1404 transitions. Second operand has 20 states, 17 states have (on average 7.9411764705882355) internal successors, (135), 19 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 18:58:51,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:51,283 INFO L93 Difference]: Finished difference Result 1215 states and 1403 transitions. [2024-11-07 18:58:51,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 18:58:51,283 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 7.9411764705882355) internal successors, (135), 19 states have internal predecessors, (135), 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 86 [2024-11-07 18:58:51,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:51,287 INFO L225 Difference]: With dead ends: 1215 [2024-11-07 18:58:51,287 INFO L226 Difference]: Without dead ends: 1215 [2024-11-07 18:58:51,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=632, Unknown=13, NotChecked=0, Total=756 [2024-11-07 18:58:51,288 INFO L432 NwaCegarLoop]: 779 mSDtfsCounter, 1166 mSDsluCounter, 8646 mSDsCounter, 0 mSdLazyCounter, 8304 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 9425 SdHoareTripleChecker+Invalid, 8339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 8304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:51,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 9425 Invalid, 8339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 8304 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-07 18:58:51,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2024-11-07 18:58:51,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1209. [2024-11-07 18:58:51,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 816 states have (on average 1.6654411764705883) internal successors, (1359), 1200 states have internal predecessors, (1359), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 18:58:51,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1391 transitions. [2024-11-07 18:58:51,301 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1391 transitions. Word has length 86 [2024-11-07 18:58:51,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:51,302 INFO L471 AbstractCegarLoop]: Abstraction has 1209 states and 1391 transitions. [2024-11-07 18:58:51,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 7.9411764705882355) internal successors, (135), 19 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 18:58:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1391 transitions. [2024-11-07 18:58:51,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-07 18:58:51,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:51,303 INFO L215 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] [2024-11-07 18:58:51,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 18:58:51,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-07 18:58:51,504 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:51,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:51,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1361370809, now seen corresponding path program 1 times [2024-11-07 18:58:51,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:51,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276712490] [2024-11-07 18:58:51,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:51,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:51,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 18:58:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:51,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:51,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:51,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276712490] [2024-11-07 18:58:51,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276712490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:58:51,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:58:51,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-07 18:58:51,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282368218] [2024-11-07 18:58:51,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:58:51,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 18:58:51,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:51,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 18:58:51,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-07 18:58:51,959 INFO L87 Difference]: Start difference. First operand 1209 states and 1391 transitions. Second operand has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 13 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:58:53,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:53,725 INFO L93 Difference]: Finished difference Result 1219 states and 1407 transitions. [2024-11-07 18:58:53,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 18:58:53,725 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 13 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2024-11-07 18:58:53,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:53,729 INFO L225 Difference]: With dead ends: 1219 [2024-11-07 18:58:53,729 INFO L226 Difference]: Without dead ends: 1219 [2024-11-07 18:58:53,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-11-07 18:58:53,731 INFO L432 NwaCegarLoop]: 779 mSDtfsCounter, 1201 mSDsluCounter, 5214 mSDsCounter, 0 mSdLazyCounter, 4181 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 5993 SdHoareTripleChecker+Invalid, 4212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:53,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 5993 Invalid, 4212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4181 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-07 18:58:53,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2024-11-07 18:58:53,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1218. [2024-11-07 18:58:53,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 824 states have (on average 1.6614077669902914) internal successors, (1369), 1208 states have internal predecessors, (1369), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-07 18:58:53,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1407 transitions. [2024-11-07 18:58:53,745 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1407 transitions. Word has length 88 [2024-11-07 18:58:53,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:53,745 INFO L471 AbstractCegarLoop]: Abstraction has 1218 states and 1407 transitions. [2024-11-07 18:58:53,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 13 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:58:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1407 transitions. [2024-11-07 18:58:53,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-07 18:58:53,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:53,746 INFO L215 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] [2024-11-07 18:58:53,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 18:58:53,747 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:53,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:53,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1361370810, now seen corresponding path program 1 times [2024-11-07 18:58:53,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:53,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354002288] [2024-11-07 18:58:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:53,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:54,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 18:58:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:54,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:54,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:54,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354002288] [2024-11-07 18:58:54,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354002288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:58:54,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:58:54,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-07 18:58:54,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253290410] [2024-11-07 18:58:54,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:58:54,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 18:58:54,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:54,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 18:58:54,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-07 18:58:54,335 INFO L87 Difference]: Start difference. First operand 1218 states and 1407 transitions. Second operand has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:58:56,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:56,185 INFO L93 Difference]: Finished difference Result 1218 states and 1406 transitions. [2024-11-07 18:58:56,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 18:58:56,185 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2024-11-07 18:58:56,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:56,189 INFO L225 Difference]: With dead ends: 1218 [2024-11-07 18:58:56,189 INFO L226 Difference]: Without dead ends: 1218 [2024-11-07 18:58:56,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-07 18:58:56,190 INFO L432 NwaCegarLoop]: 786 mSDtfsCounter, 1194 mSDsluCounter, 3963 mSDsCounter, 0 mSdLazyCounter, 4125 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 4749 SdHoareTripleChecker+Invalid, 4154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:56,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 4749 Invalid, 4154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4125 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-07 18:58:56,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2024-11-07 18:58:56,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1218. [2024-11-07 18:58:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 824 states have (on average 1.6601941747572815) internal successors, (1368), 1208 states have internal predecessors, (1368), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-07 18:58:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1406 transitions. [2024-11-07 18:58:56,203 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1406 transitions. Word has length 88 [2024-11-07 18:58:56,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:56,204 INFO L471 AbstractCegarLoop]: Abstraction has 1218 states and 1406 transitions. [2024-11-07 18:58:56,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:58:56,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1406 transitions. [2024-11-07 18:58:56,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-07 18:58:56,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:56,205 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 18:58:56,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-07 18:58:56,205 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:58:56,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:58:56,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1810750578, now seen corresponding path program 1 times [2024-11-07 18:58:56,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:58:56,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653106623] [2024-11-07 18:58:56,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:56,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:58:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:56,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 18:58:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:56,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:58:56,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653106623] [2024-11-07 18:58:56,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653106623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 18:58:56,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109113836] [2024-11-07 18:58:56,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:58:56,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 18:58:56,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 18:58:56,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 18:58:56,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 18:58:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:58:56,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-07 18:58:56,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 18:58:56,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 18:58:56,985 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 18:58:56,985 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 11 treesize of output 11 [2024-11-07 18:58:56,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-07 18:58:57,057 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:58:57,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-07 18:58:57,099 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:58:57,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-07 18:58:57,110 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 31 treesize of output 13 [2024-11-07 18:58:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:58:57,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 18:58:57,150 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_897 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_897) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2024-11-07 18:58:57,180 INFO L349 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2024-11-07 18:58:57,180 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 33 treesize of output 32 [2024-11-07 18:58:57,185 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_897 (Array Int Int)) (v_ArrVal_900 (Array Int Int))) (= (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_900))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_897)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem50#1.base|)) is different from false [2024-11-07 18:58:57,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109113836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 18:58:57,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 18:58:57,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 16 [2024-11-07 18:58:57,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676634463] [2024-11-07 18:58:57,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 18:58:57,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 18:58:57,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:58:57,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 18:58:57,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=252, Unknown=10, NotChecked=66, Total=380 [2024-11-07 18:58:57,189 INFO L87 Difference]: Start difference. First operand 1218 states and 1406 transitions. Second operand has 17 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:58:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:58:59,847 INFO L93 Difference]: Finished difference Result 1217 states and 1405 transitions. [2024-11-07 18:58:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 18:58:59,847 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2024-11-07 18:58:59,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:58:59,850 INFO L225 Difference]: With dead ends: 1217 [2024-11-07 18:58:59,850 INFO L226 Difference]: Without dead ends: 1217 [2024-11-07 18:58:59,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=535, Unknown=14, NotChecked=98, Total=756 [2024-11-07 18:58:59,851 INFO L432 NwaCegarLoop]: 779 mSDtfsCounter, 1164 mSDsluCounter, 8888 mSDsCounter, 0 mSdLazyCounter, 6765 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 9667 SdHoareTripleChecker+Invalid, 6795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 6765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-07 18:58:59,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 9667 Invalid, 6795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 6765 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-07 18:58:59,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2024-11-07 18:58:59,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2024-11-07 18:58:59,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 824 states have (on average 1.6589805825242718) internal successors, (1367), 1207 states have internal predecessors, (1367), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-07 18:58:59,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1405 transitions. [2024-11-07 18:58:59,864 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1405 transitions. Word has length 89 [2024-11-07 18:58:59,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:58:59,864 INFO L471 AbstractCegarLoop]: Abstraction has 1217 states and 1405 transitions. [2024-11-07 18:58:59,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:58:59,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1405 transitions. [2024-11-07 18:58:59,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-07 18:58:59,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:58:59,865 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 18:58:59,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 18:59:00,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 18:59:00,066 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:59:00,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:59:00,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1810750579, now seen corresponding path program 1 times [2024-11-07 18:59:00,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:59:00,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441690599] [2024-11-07 18:59:00,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:59:00,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:59:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:00,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 18:59:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:59:00,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:59:00,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441690599] [2024-11-07 18:59:00,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441690599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 18:59:00,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255849409] [2024-11-07 18:59:00,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:59:00,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 18:59:00,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 18:59:00,763 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 18:59:00,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 18:59:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:00,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-07 18:59:00,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 18:59:01,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 18:59:01,109 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 18:59:01,109 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 11 treesize of output 11 [2024-11-07 18:59:01,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 18:59:01,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-07 18:59:01,126 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 [2024-11-07 18:59:01,175 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 22 treesize of output 10 [2024-11-07 18:59:01,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-07 18:59:01,277 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:59:01,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-07 18:59:01,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-07 18:59:01,348 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:59:01,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-07 18:59:01,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-07 18:59:01,368 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 31 treesize of output 13 [2024-11-07 18:59:01,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-07 18:59:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:59:01,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 18:59:01,436 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1043 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1043) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1044 (Array Int Int)) (v_ArrVal_1043 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1043) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-07 18:59:01,447 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1044 (Array Int Int)) (v_ArrVal_1043 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1043) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_1043 (Array Int Int))) (<= 0 (+ 4 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1043) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2024-11-07 18:59:01,493 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1049 (Array Int Int)) (v_ArrVal_1043 (Array Int Int)) (v_ArrVal_1050 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1050) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1049) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1043) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1049 (Array Int Int)) (v_ArrVal_1044 (Array Int Int)) (v_ArrVal_1043 (Array Int Int)) (v_ArrVal_1050 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1049))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1050) .cse1 v_ArrVal_1043) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))) is different from false [2024-11-07 18:59:01,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255849409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 18:59:01,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 18:59:01,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 16 [2024-11-07 18:59:01,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136854943] [2024-11-07 18:59:01,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 18:59:01,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 18:59:01,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:59:01,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 18:59:01,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=293, Unknown=3, NotChecked=108, Total=462 [2024-11-07 18:59:01,497 INFO L87 Difference]: Start difference. First operand 1217 states and 1405 transitions. Second operand has 17 states, 15 states have (on average 8.866666666666667) internal successors, (133), 16 states have internal predecessors, (133), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 18:59:05,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:59:05,467 INFO L93 Difference]: Finished difference Result 1224 states and 1412 transitions. [2024-11-07 18:59:05,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 18:59:05,468 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 8.866666666666667) internal successors, (133), 16 states have internal predecessors, (133), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 89 [2024-11-07 18:59:05,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:59:05,471 INFO L225 Difference]: With dead ends: 1224 [2024-11-07 18:59:05,471 INFO L226 Difference]: Without dead ends: 1224 [2024-11-07 18:59:05,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=599, Unknown=3, NotChecked=156, Total=870 [2024-11-07 18:59:05,472 INFO L432 NwaCegarLoop]: 777 mSDtfsCounter, 1170 mSDsluCounter, 7290 mSDsCounter, 0 mSdLazyCounter, 8379 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 8067 SdHoareTripleChecker+Invalid, 8412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 8379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-07 18:59:05,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 8067 Invalid, 8412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 8379 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-07 18:59:05,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2024-11-07 18:59:05,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1212. [2024-11-07 18:59:05,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 820 states have (on average 1.6609756097560975) internal successors, (1362), 1202 states have internal predecessors, (1362), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 18:59:05,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1394 transitions. [2024-11-07 18:59:05,484 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1394 transitions. Word has length 89 [2024-11-07 18:59:05,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:59:05,484 INFO L471 AbstractCegarLoop]: Abstraction has 1212 states and 1394 transitions. [2024-11-07 18:59:05,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 8.866666666666667) internal successors, (133), 16 states have internal predecessors, (133), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 18:59:05,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1394 transitions. [2024-11-07 18:59:05,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-07 18:59:05,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:59:05,486 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 18:59:05,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-07 18:59:05,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 18:59:05,690 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:59:05,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:59:05,690 INFO L85 PathProgramCache]: Analyzing trace with hash -777793486, now seen corresponding path program 1 times [2024-11-07 18:59:05,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:59:05,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657117191] [2024-11-07 18:59:05,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:59:05,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:59:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:06,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 18:59:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:06,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:59:06,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:59:06,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657117191] [2024-11-07 18:59:06,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657117191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:59:06,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:59:06,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-07 18:59:06,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768885889] [2024-11-07 18:59:06,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:59:06,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 18:59:06,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:59:06,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 18:59:06,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-07 18:59:06,172 INFO L87 Difference]: Start difference. First operand 1212 states and 1394 transitions. Second operand has 15 states, 13 states have (on average 6.846153846153846) internal successors, (89), 14 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:59:08,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:59:08,586 INFO L93 Difference]: Finished difference Result 1228 states and 1416 transitions. [2024-11-07 18:59:08,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 18:59:08,586 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.846153846153846) internal successors, (89), 14 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2024-11-07 18:59:08,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:59:08,589 INFO L225 Difference]: With dead ends: 1228 [2024-11-07 18:59:08,589 INFO L226 Difference]: Without dead ends: 1228 [2024-11-07 18:59:08,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-07 18:59:08,589 INFO L432 NwaCegarLoop]: 778 mSDtfsCounter, 1178 mSDsluCounter, 7406 mSDsCounter, 0 mSdLazyCounter, 5755 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 8184 SdHoareTripleChecker+Invalid, 5785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-07 18:59:08,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 8184 Invalid, 5785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 5755 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-07 18:59:08,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2024-11-07 18:59:08,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1224. [2024-11-07 18:59:08,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 831 states have (on average 1.654632972322503) internal successors, (1375), 1213 states have internal predecessors, (1375), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-07 18:59:08,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1408 transitions. [2024-11-07 18:59:08,604 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1408 transitions. Word has length 91 [2024-11-07 18:59:08,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:59:08,604 INFO L471 AbstractCegarLoop]: Abstraction has 1224 states and 1408 transitions. [2024-11-07 18:59:08,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.846153846153846) internal successors, (89), 14 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:59:08,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1408 transitions. [2024-11-07 18:59:08,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-07 18:59:08,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:59:08,605 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 18:59:08,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-07 18:59:08,605 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:59:08,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:59:08,606 INFO L85 PathProgramCache]: Analyzing trace with hash -777793485, now seen corresponding path program 1 times [2024-11-07 18:59:08,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:59:08,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20491350] [2024-11-07 18:59:08,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:59:08,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:59:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:09,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 18:59:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:59:09,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:59:09,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20491350] [2024-11-07 18:59:09,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20491350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:59:09,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:59:09,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-07 18:59:09,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30225223] [2024-11-07 18:59:09,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:59:09,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 18:59:09,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:59:09,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 18:59:09,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-07 18:59:09,280 INFO L87 Difference]: Start difference. First operand 1224 states and 1408 transitions. Second operand has 13 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:59:11,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:59:11,170 INFO L93 Difference]: Finished difference Result 1227 states and 1415 transitions. [2024-11-07 18:59:11,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 18:59:11,171 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2024-11-07 18:59:11,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:59:11,174 INFO L225 Difference]: With dead ends: 1227 [2024-11-07 18:59:11,174 INFO L226 Difference]: Without dead ends: 1227 [2024-11-07 18:59:11,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-07 18:59:11,175 INFO L432 NwaCegarLoop]: 785 mSDtfsCounter, 1195 mSDsluCounter, 3965 mSDsCounter, 0 mSdLazyCounter, 4126 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 4750 SdHoareTripleChecker+Invalid, 4155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-07 18:59:11,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 4750 Invalid, 4155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4126 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-07 18:59:11,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2024-11-07 18:59:11,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1224. [2024-11-07 18:59:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 831 states have (on average 1.6534296028880866) internal successors, (1374), 1213 states have internal predecessors, (1374), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-07 18:59:11,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1407 transitions. [2024-11-07 18:59:11,188 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1407 transitions. Word has length 91 [2024-11-07 18:59:11,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:59:11,189 INFO L471 AbstractCegarLoop]: Abstraction has 1224 states and 1407 transitions. [2024-11-07 18:59:11,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:59:11,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1407 transitions. [2024-11-07 18:59:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-07 18:59:11,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:59:11,189 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 18:59:11,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-07 18:59:11,189 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:59:11,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:59:11,190 INFO L85 PathProgramCache]: Analyzing trace with hash -718156839, now seen corresponding path program 1 times [2024-11-07 18:59:11,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:59:11,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968554026] [2024-11-07 18:59:11,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:59:11,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:59:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:11,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 18:59:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:11,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:59:11,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:59:11,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968554026] [2024-11-07 18:59:11,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968554026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 18:59:11,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709490606] [2024-11-07 18:59:11,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:59:11,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 18:59:11,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 18:59:11,646 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 18:59:11,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 18:59:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:11,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 18:59:11,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 18:59:11,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 18:59:11,985 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 18:59:11,986 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 11 treesize of output 11 [2024-11-07 18:59:11,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-07 18:59:12,058 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:59:12,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-07 18:59:12,100 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:59:12,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-07 18:59:12,165 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:59:12,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-07 18:59:12,183 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 31 treesize of output 13 [2024-11-07 18:59:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:59:12,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 18:59:12,241 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1330 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1330) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2024-11-07 18:59:12,249 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1329 (Array Int Int)) (v_ArrVal_1330 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1329))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1330)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-07 18:59:12,384 INFO L349 Elim1Store]: treesize reduction 5, result has 90.6 percent of original size [2024-11-07 18:59:12,384 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 57 treesize of output 56 [2024-11-07 18:59:12,390 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1329 (Array Int Int)) (v_ArrVal_1333 (Array Int Int)) (v_ArrVal_1330 (Array Int Int))) (= (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1333))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1329)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1330)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem50#1.base|)) is different from false [2024-11-07 18:59:12,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709490606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 18:59:12,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 18:59:12,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 18 [2024-11-07 18:59:12,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253487673] [2024-11-07 18:59:12,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 18:59:12,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 18:59:12,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:59:12,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 18:59:12,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=350, Unknown=11, NotChecked=120, Total=552 [2024-11-07 18:59:12,394 INFO L87 Difference]: Start difference. First operand 1224 states and 1407 transitions. Second operand has 19 states, 17 states have (on average 7.882352941176471) internal successors, (134), 17 states have internal predecessors, (134), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:59:15,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:59:15,338 INFO L93 Difference]: Finished difference Result 1226 states and 1414 transitions. [2024-11-07 18:59:15,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 18:59:15,338 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 7.882352941176471) internal successors, (134), 17 states have internal predecessors, (134), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2024-11-07 18:59:15,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:59:15,341 INFO L225 Difference]: With dead ends: 1226 [2024-11-07 18:59:15,341 INFO L226 Difference]: Without dead ends: 1226 [2024-11-07 18:59:15,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=728, Unknown=11, NotChecked=174, Total=1056 [2024-11-07 18:59:15,341 INFO L432 NwaCegarLoop]: 778 mSDtfsCounter, 1162 mSDsluCounter, 9632 mSDsCounter, 0 mSdLazyCounter, 7297 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 10410 SdHoareTripleChecker+Invalid, 7327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 7297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-07 18:59:15,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 10410 Invalid, 7327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 7297 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-07 18:59:15,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2024-11-07 18:59:15,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1223. [2024-11-07 18:59:15,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 831 states have (on average 1.6522262334536704) internal successors, (1373), 1212 states have internal predecessors, (1373), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-07 18:59:15,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1406 transitions. [2024-11-07 18:59:15,352 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1406 transitions. Word has length 92 [2024-11-07 18:59:15,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:59:15,352 INFO L471 AbstractCegarLoop]: Abstraction has 1223 states and 1406 transitions. [2024-11-07 18:59:15,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 7.882352941176471) internal successors, (134), 17 states have internal predecessors, (134), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:59:15,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1406 transitions. [2024-11-07 18:59:15,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-07 18:59:15,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:59:15,353 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 18:59:15,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 18:59:15,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-07 18:59:15,554 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:59:15,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:59:15,554 INFO L85 PathProgramCache]: Analyzing trace with hash -718156838, now seen corresponding path program 1 times [2024-11-07 18:59:15,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:59:15,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399407483] [2024-11-07 18:59:15,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:59:15,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:59:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:16,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 18:59:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:16,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:59:16,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:59:16,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399407483] [2024-11-07 18:59:16,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399407483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 18:59:16,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509290227] [2024-11-07 18:59:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:59:16,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 18:59:16,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 18:59:16,247 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 18:59:16,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 18:59:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:16,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-07 18:59:16,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 18:59:16,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 18:59:16,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 18:59:16,564 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 18:59:16,564 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 11 treesize of output 11 [2024-11-07 18:59:16,570 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 [2024-11-07 18:59:16,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-07 18:59:16,615 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 22 treesize of output 10 [2024-11-07 18:59:16,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-07 18:59:16,710 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:59:16,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-07 18:59:16,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-07 18:59:16,776 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:59:16,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-07 18:59:16,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-07 18:59:16,840 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:59:16,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-07 18:59:16,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-07 18:59:16,859 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 31 treesize of output 13 [2024-11-07 18:59:16,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-07 18:59:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:59:16,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 18:59:16,909 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1491 (Array Int Int)) (v_ArrVal_1490 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1491) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 12) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1490) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1491 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1491) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8))))) is different from false [2024-11-07 18:59:16,916 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1491 (Array Int Int)) (v_ArrVal_1490 (Array Int Int))) (<= (+ 12 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1491) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1490) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_1491 (Array Int Int))) (<= 0 (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1491) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2024-11-07 18:59:16,930 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1489 (Array Int Int)) (v_ArrVal_1488 (Array Int Int)) (v_ArrVal_1491 (Array Int Int)) (v_ArrVal_1490 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1489))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1488) .cse0 v_ArrVal_1491) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1490) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1489 (Array Int Int)) (v_ArrVal_1488 (Array Int Int)) (v_ArrVal_1491 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1488) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1489) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1491) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8))))) is different from false [2024-11-07 18:59:16,942 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1489 (Array Int Int)) (v_ArrVal_1488 (Array Int Int)) (v_ArrVal_1491 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1488) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1489) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1491) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8))) (forall ((v_ArrVal_1489 (Array Int Int)) (v_ArrVal_1488 (Array Int Int)) (v_ArrVal_1491 (Array Int Int)) (v_ArrVal_1490 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1489))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1488) .cse2 v_ArrVal_1491) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_1490) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))) is different from false [2024-11-07 18:59:16,993 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1489 (Array Int Int)) (v_ArrVal_1488 (Array Int Int)) (v_ArrVal_1497 (Array Int Int)) (v_ArrVal_1496 (Array Int Int)) (v_ArrVal_1491 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1496))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1497) .cse0 v_ArrVal_1488) (select (select (store .cse1 .cse0 v_ArrVal_1489) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1491))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 8))) (forall ((v_ArrVal_1489 (Array Int Int)) (v_ArrVal_1488 (Array Int Int)) (v_ArrVal_1497 (Array Int Int)) (v_ArrVal_1496 (Array Int Int)) (v_ArrVal_1491 (Array Int Int)) (v_ArrVal_1490 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1496))) (let ((.cse3 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse5 (store .cse6 .cse3 v_ArrVal_1489))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1497) .cse3 v_ArrVal_1488) .cse4 v_ArrVal_1491) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 12) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_1490) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))) is different from false [2024-11-07 18:59:16,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509290227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 18:59:16,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 18:59:16,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 18 [2024-11-07 18:59:16,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781422012] [2024-11-07 18:59:16,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 18:59:16,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 18:59:16,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:59:16,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 18:59:16,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=362, Unknown=5, NotChecked=210, Total=650 [2024-11-07 18:59:16,996 INFO L87 Difference]: Start difference. First operand 1223 states and 1406 transitions. Second operand has 19 states, 17 states have (on average 8.117647058823529) internal successors, (138), 18 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 18:59:21,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:59:21,358 INFO L93 Difference]: Finished difference Result 1225 states and 1413 transitions. [2024-11-07 18:59:21,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 18:59:21,359 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 8.117647058823529) internal successors, (138), 18 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 92 [2024-11-07 18:59:21,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:59:21,361 INFO L225 Difference]: With dead ends: 1225 [2024-11-07 18:59:21,361 INFO L226 Difference]: Without dead ends: 1225 [2024-11-07 18:59:21,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=749, Unknown=5, NotChecked=300, Total=1190 [2024-11-07 18:59:21,361 INFO L432 NwaCegarLoop]: 776 mSDtfsCounter, 1168 mSDsluCounter, 7716 mSDsCounter, 0 mSdLazyCounter, 9221 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 8492 SdHoareTripleChecker+Invalid, 9254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 9221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-07 18:59:21,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 8492 Invalid, 9254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 9221 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-07 18:59:21,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2024-11-07 18:59:21,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1210. [2024-11-07 18:59:21,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 820 states have (on average 1.6585365853658536) internal successors, (1360), 1200 states have internal predecessors, (1360), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 18:59:21,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1392 transitions. [2024-11-07 18:59:21,375 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1392 transitions. Word has length 92 [2024-11-07 18:59:21,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:59:21,375 INFO L471 AbstractCegarLoop]: Abstraction has 1210 states and 1392 transitions. [2024-11-07 18:59:21,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 8.117647058823529) internal successors, (138), 18 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 18:59:21,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1392 transitions. [2024-11-07 18:59:21,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-07 18:59:21,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:59:21,376 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 18:59:21,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 18:59:21,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-07 18:59:21,577 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:59:21,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:59:21,577 INFO L85 PathProgramCache]: Analyzing trace with hash 103439168, now seen corresponding path program 1 times [2024-11-07 18:59:21,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:59:21,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528081682] [2024-11-07 18:59:21,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:59:21,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:59:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:22,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 18:59:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:59:22,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:59:22,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528081682] [2024-11-07 18:59:22,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528081682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:59:22,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:59:22,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-07 18:59:22,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536607751] [2024-11-07 18:59:22,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:59:22,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 18:59:22,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:59:22,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 18:59:22,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-07 18:59:22,042 INFO L87 Difference]: Start difference. First operand 1210 states and 1392 transitions. Second operand has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 15 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:59:23,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:59:23,846 INFO L93 Difference]: Finished difference Result 1229 states and 1417 transitions. [2024-11-07 18:59:23,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 18:59:23,846 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 15 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2024-11-07 18:59:23,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:59:23,849 INFO L225 Difference]: With dead ends: 1229 [2024-11-07 18:59:23,849 INFO L226 Difference]: Without dead ends: 1229 [2024-11-07 18:59:23,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2024-11-07 18:59:23,850 INFO L432 NwaCegarLoop]: 777 mSDtfsCounter, 1185 mSDsluCounter, 5210 mSDsCounter, 0 mSdLazyCounter, 4191 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 5987 SdHoareTripleChecker+Invalid, 4222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-07 18:59:23,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1205 Valid, 5987 Invalid, 4222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4191 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-07 18:59:23,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2024-11-07 18:59:23,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1225. [2024-11-07 18:59:23,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 834 states have (on average 1.6498800959232613) internal successors, (1376), 1214 states have internal predecessors, (1376), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-07 18:59:23,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1409 transitions. [2024-11-07 18:59:23,862 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1409 transitions. Word has length 94 [2024-11-07 18:59:23,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:59:23,863 INFO L471 AbstractCegarLoop]: Abstraction has 1225 states and 1409 transitions. [2024-11-07 18:59:23,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 15 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:59:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1409 transitions. [2024-11-07 18:59:23,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-07 18:59:23,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:59:23,864 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 18:59:23,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-07 18:59:23,864 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:59:23,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:59:23,865 INFO L85 PathProgramCache]: Analyzing trace with hash 103439169, now seen corresponding path program 1 times [2024-11-07 18:59:23,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:59:23,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614589164] [2024-11-07 18:59:23,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:59:23,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:59:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:24,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 18:59:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:59:24,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:59:24,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614589164] [2024-11-07 18:59:24,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614589164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:59:24,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:59:24,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-07 18:59:24,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641286573] [2024-11-07 18:59:24,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:59:24,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 18:59:24,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:59:24,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 18:59:24,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-07 18:59:24,466 INFO L87 Difference]: Start difference. First operand 1225 states and 1409 transitions. Second operand has 14 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:59:26,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:59:26,436 INFO L93 Difference]: Finished difference Result 1228 states and 1416 transitions. [2024-11-07 18:59:26,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 18:59:26,436 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2024-11-07 18:59:26,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:59:26,438 INFO L225 Difference]: With dead ends: 1228 [2024-11-07 18:59:26,438 INFO L226 Difference]: Without dead ends: 1228 [2024-11-07 18:59:26,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-07 18:59:26,439 INFO L432 NwaCegarLoop]: 784 mSDtfsCounter, 1183 mSDsluCounter, 3791 mSDsCounter, 0 mSdLazyCounter, 4328 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 4575 SdHoareTripleChecker+Invalid, 4372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 4328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-07 18:59:26,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 4575 Invalid, 4372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 4328 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-07 18:59:26,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2024-11-07 18:59:26,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1225. [2024-11-07 18:59:26,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 834 states have (on average 1.6486810551558753) internal successors, (1375), 1214 states have internal predecessors, (1375), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-07 18:59:26,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1408 transitions. [2024-11-07 18:59:26,451 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1408 transitions. Word has length 94 [2024-11-07 18:59:26,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:59:26,451 INFO L471 AbstractCegarLoop]: Abstraction has 1225 states and 1408 transitions. [2024-11-07 18:59:26,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 18:59:26,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1408 transitions. [2024-11-07 18:59:26,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-07 18:59:26,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:59:26,452 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 18:59:26,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-07 18:59:26,452 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:59:26,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:59:26,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1377670599, now seen corresponding path program 1 times [2024-11-07 18:59:26,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:59:26,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901972084] [2024-11-07 18:59:26,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:59:26,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:59:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:26,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 18:59:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:26,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:59:26,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:59:26,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901972084] [2024-11-07 18:59:26,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901972084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 18:59:26,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747375029] [2024-11-07 18:59:26,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:59:26,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 18:59:26,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 18:59:26,994 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 18:59:26,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-07 18:59:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:27,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-07 18:59:27,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 18:59:27,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 18:59:27,315 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 18:59:27,315 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 11 treesize of output 11 [2024-11-07 18:59:27,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-07 18:59:27,386 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:59:27,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-07 18:59:27,421 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:59:27,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-07 18:59:27,453 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:59:27,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-07 18:59:27,492 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:59:27,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-07 18:59:27,499 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 31 treesize of output 13 [2024-11-07 18:59:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:59:27,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 18:59:27,507 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1802 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1802) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-07 18:59:27,543 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1802 (Array Int Int)) (v_ArrVal_1801 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1801))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1802)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-07 18:59:31,654 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1802 (Array Int Int)) (v_ArrVal_1801 (Array Int Int)) (v_ArrVal_1800 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1800))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1801)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1802)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-07 18:59:31,731 INFO L349 Elim1Store]: treesize reduction 5, result has 95.0 percent of original size [2024-11-07 18:59:31,732 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 105 treesize of output 104 [2024-11-07 18:59:31,739 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1802 (Array Int Int)) (v_ArrVal_1801 (Array Int Int)) (v_ArrVal_1800 (Array Int Int)) (v_ArrVal_1805 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem50#1.base| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1805))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1800)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1801)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1802)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-07 18:59:31,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747375029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 18:59:31,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 18:59:31,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 21 [2024-11-07 18:59:31,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577716738] [2024-11-07 18:59:31,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 18:59:31,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 18:59:31,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:59:31,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 18:59:31,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=493, Unknown=24, NotChecked=196, Total=812 [2024-11-07 18:59:31,742 INFO L87 Difference]: Start difference. First operand 1225 states and 1408 transitions. Second operand has 22 states, 20 states have (on average 7.2) internal successors, (144), 21 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 18:59:34,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:59:34,621 INFO L93 Difference]: Finished difference Result 1227 states and 1415 transitions. [2024-11-07 18:59:34,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 18:59:34,622 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 7.2) internal successors, (144), 21 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 95 [2024-11-07 18:59:34,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:59:34,624 INFO L225 Difference]: With dead ends: 1227 [2024-11-07 18:59:34,624 INFO L226 Difference]: Without dead ends: 1227 [2024-11-07 18:59:34,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=194, Invalid=988, Unknown=24, NotChecked=276, Total=1482 [2024-11-07 18:59:34,625 INFO L432 NwaCegarLoop]: 777 mSDtfsCounter, 1168 mSDsluCounter, 6641 mSDsCounter, 0 mSdLazyCounter, 5257 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 7418 SdHoareTripleChecker+Invalid, 5303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 5257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-07 18:59:34,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 7418 Invalid, 5303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 5257 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-07 18:59:34,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2024-11-07 18:59:34,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1224. [2024-11-07 18:59:34,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 834 states have (on average 1.6474820143884892) internal successors, (1374), 1213 states have internal predecessors, (1374), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-07 18:59:34,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1407 transitions. [2024-11-07 18:59:34,640 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1407 transitions. Word has length 95 [2024-11-07 18:59:34,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:59:34,641 INFO L471 AbstractCegarLoop]: Abstraction has 1224 states and 1407 transitions. [2024-11-07 18:59:34,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 7.2) internal successors, (144), 21 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 18:59:34,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1407 transitions. [2024-11-07 18:59:34,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-07 18:59:34,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:59:34,642 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 18:59:34,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 18:59:34,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 18:59:34,843 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:59:34,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:59:34,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1377670598, now seen corresponding path program 1 times [2024-11-07 18:59:34,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:59:34,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684906986] [2024-11-07 18:59:34,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:59:34,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:59:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:35,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 18:59:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:59:35,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:59:35,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684906986] [2024-11-07 18:59:35,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684906986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 18:59:35,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580381702] [2024-11-07 18:59:35,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:59:35,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 18:59:35,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 18:59:35,680 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 18:59:35,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-07 18:59:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:35,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-07 18:59:35,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 18:59:35,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 18:59:35,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 18:59:35,999 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 18:59:35,999 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 11 treesize of output 11 [2024-11-07 18:59:36,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-07 18:59:36,024 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 [2024-11-07 18:59:36,099 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 22 treesize of output 10 [2024-11-07 18:59:36,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-07 18:59:36,190 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:59:36,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-07 18:59:36,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-07 18:59:36,260 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:59:36,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-07 18:59:36,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-07 18:59:36,317 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:59:36,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-07 18:59:36,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-07 18:59:36,373 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-07 18:59:36,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-07 18:59:36,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-07 18:59:36,391 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 31 treesize of output 13 [2024-11-07 18:59:36,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-07 18:59:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:59:36,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 18:59:36,478 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1977 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1977) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20))) (forall ((v_ArrVal_1977 (Array Int Int)) (v_ArrVal_1976 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1977) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1976) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-07 18:59:36,490 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1977 (Array Int Int)) (v_ArrVal_1976 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1977) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1976) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_1977 (Array Int Int))) (<= 0 (+ 20 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1977) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2024-11-07 18:59:36,512 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1977 (Array Int Int)) (v_ArrVal_1975 (Array Int Int)) (v_ArrVal_1974 (Array Int Int))) (<= 0 (+ 20 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1975) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1974) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1977) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1977 (Array Int Int)) (v_ArrVal_1976 (Array Int Int)) (v_ArrVal_1975 (Array Int Int)) (v_ArrVal_1974 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1974))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1975) .cse1 v_ArrVal_1977) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 24) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1976) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))) is different from false [2024-11-07 18:59:36,527 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_1977 (Array Int Int)) (v_ArrVal_1976 (Array Int Int)) (v_ArrVal_1975 (Array Int Int)) (v_ArrVal_1974 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1974))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1975) .cse1 v_ArrVal_1977) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_1976) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_1977 (Array Int Int)) (v_ArrVal_1975 (Array Int Int)) (v_ArrVal_1974 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1975) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1974) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1977) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 20)))))) is different from false [2024-11-07 18:59:36,551 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1977 (Array Int Int)) (v_ArrVal_1975 (Array Int Int)) (v_ArrVal_1974 (Array Int Int)) (v_ArrVal_1973 (Array Int Int)) (v_ArrVal_1972 (Array Int Int))) (<= 0 (+ 20 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1972))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1973) .cse0 v_ArrVal_1975) (select (select (store .cse1 .cse0 v_ArrVal_1974) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1977))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))) (forall ((v_ArrVal_1977 (Array Int Int)) (v_ArrVal_1976 (Array Int Int)) (v_ArrVal_1975 (Array Int Int)) (v_ArrVal_1974 (Array Int Int)) (v_ArrVal_1973 (Array Int Int)) (v_ArrVal_1972 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1972))) (let ((.cse3 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse5 (store .cse6 .cse3 v_ArrVal_1974))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1973) .cse3 v_ArrVal_1975) .cse4 v_ArrVal_1977) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_1976) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))) is different from false [2024-11-07 18:59:36,724 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1977 (Array Int Int)) (v_ArrVal_1975 (Array Int Int)) (v_ArrVal_1974 (Array Int Int)) (v_ArrVal_1973 (Array Int Int)) (v_ArrVal_1983 (Array Int Int)) (v_ArrVal_1972 (Array Int Int)) (v_ArrVal_1982 (Array Int Int))) (<= 0 (+ 20 (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1983))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_1972))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1982) .cse0 v_ArrVal_1973) .cse1 v_ArrVal_1975) (select (select (store .cse2 .cse1 v_ArrVal_1974) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_1977))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (forall ((v_ArrVal_1977 (Array Int Int)) (v_ArrVal_1976 (Array Int Int)) (v_ArrVal_1975 (Array Int Int)) (v_ArrVal_1974 (Array Int Int)) (v_ArrVal_1973 (Array Int Int)) (v_ArrVal_1983 (Array Int Int)) (v_ArrVal_1972 (Array Int Int)) (v_ArrVal_1982 (Array Int Int))) (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1983))) (let ((.cse5 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse5 v_ArrVal_1972))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_1974))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1982) .cse5 v_ArrVal_1973) .cse6 v_ArrVal_1975) .cse7 v_ArrVal_1977) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse8 .cse7 v_ArrVal_1976) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))))) is different from false [2024-11-07 18:59:36,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580381702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 18:59:36,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 18:59:36,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2024-11-07 18:59:36,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937487643] [2024-11-07 18:59:36,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 18:59:36,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 18:59:36,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:59:36,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 18:59:36,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=654, Unknown=12, NotChecked=342, Total=1122 [2024-11-07 18:59:36,729 INFO L87 Difference]: Start difference. First operand 1224 states and 1407 transitions. Second operand has 25 states, 22 states have (on average 6.954545454545454) internal successors, (153), 24 states have internal predecessors, (153), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 18:59:40,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 18:59:40,488 INFO L93 Difference]: Finished difference Result 1226 states and 1414 transitions. [2024-11-07 18:59:40,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 18:59:40,488 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 6.954545454545454) internal successors, (153), 24 states have internal predecessors, (153), 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 95 [2024-11-07 18:59:40,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 18:59:40,490 INFO L225 Difference]: With dead ends: 1226 [2024-11-07 18:59:40,490 INFO L226 Difference]: Without dead ends: 1226 [2024-11-07 18:59:40,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=1082, Unknown=12, NotChecked=438, Total=1722 [2024-11-07 18:59:40,491 INFO L432 NwaCegarLoop]: 782 mSDtfsCounter, 1172 mSDsluCounter, 5514 mSDsCounter, 0 mSdLazyCounter, 6466 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 6296 SdHoareTripleChecker+Invalid, 6516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 6466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-07 18:59:40,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 6296 Invalid, 6516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 6466 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-07 18:59:40,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2024-11-07 18:59:40,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1208. [2024-11-07 18:59:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 820 states have (on average 1.6560975609756097) internal successors, (1358), 1198 states have internal predecessors, (1358), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 18:59:40,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1390 transitions. [2024-11-07 18:59:40,499 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1390 transitions. Word has length 95 [2024-11-07 18:59:40,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 18:59:40,500 INFO L471 AbstractCegarLoop]: Abstraction has 1208 states and 1390 transitions. [2024-11-07 18:59:40,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 6.954545454545454) internal successors, (153), 24 states have internal predecessors, (153), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 18:59:40,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1390 transitions. [2024-11-07 18:59:40,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-07 18:59:40,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 18:59:40,500 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 18:59:40,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 18:59:40,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-07 18:59:40,701 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-07 18:59:40,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 18:59:40,701 INFO L85 PathProgramCache]: Analyzing trace with hash -399332094, now seen corresponding path program 1 times [2024-11-07 18:59:40,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 18:59:40,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423949437] [2024-11-07 18:59:40,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 18:59:40,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 18:59:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:41,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 18:59:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 18:59:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 18:59:41,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 18:59:41,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423949437] [2024-11-07 18:59:41,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423949437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 18:59:41,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 18:59:41,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-07 18:59:41,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067008382] [2024-11-07 18:59:41,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 18:59:41,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 18:59:41,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 18:59:41,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 18:59:41,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-07 18:59:41,326 INFO L87 Difference]: Start difference. First operand 1208 states and 1390 transitions. Second operand has 15 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)