./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-45.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/AutomizerReach.xml', '-i', '../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-45.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '234ea2f8e3d6d6484515d1c4ef9cb5f5cd5e6bfd33069cc1d7dd92768b55f593'] 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/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-45.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 234ea2f8e3d6d6484515d1c4ef9cb5f5cd5e6bfd33069cc1d7dd92768b55f593 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 08:42:39,514 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 08:42:39,608 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 08:42:39,613 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 08:42:39,614 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 08:42:39,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 08:42:39,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 08:42:39,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 08:42:39,636 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 08:42:39,636 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 08:42:39,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 08:42:39,637 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 08:42:39,637 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 08:42:39,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 08:42:39,637 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 08:42:39,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 08:42:39,637 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 08:42:39,637 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 08:42:39,637 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 08:42:39,637 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 08:42:39,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 08:42:39,638 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 08:42:39,638 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 08:42:39,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 08:42:39,638 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 08:42:39,638 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 08:42:39,638 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 08:42:39,638 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 08:42:39,638 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 08:42:39,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 08:42:39,638 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 08:42:39,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 08:42:39,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 08:42:39,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 08:42:39,639 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 08:42:39,639 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 08:42:39,639 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 08:42:39,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 08:42:39,639 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 08:42:39,639 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 08:42:39,639 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 08:42:39,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 08:42:39,642 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 ! call(reach_error())) ) 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 -> 234ea2f8e3d6d6484515d1c4ef9cb5f5cd5e6bfd33069cc1d7dd92768b55f593 [2024-11-07 08:42:39,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 08:42:39,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 08:42:39,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 08:42:39,950 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 08:42:39,950 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 08:42:39,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-45.i [2024-11-07 08:42:41,237 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 08:42:41,503 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 08:42:41,504 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-45.i [2024-11-07 08:42:41,516 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8058397ee/aee3767b43424029bf65ef73f1b14dd5/FLAG74d1dce21 [2024-11-07 08:42:41,535 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8058397ee/aee3767b43424029bf65ef73f1b14dd5 [2024-11-07 08:42:41,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 08:42:41,540 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 08:42:41,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 08:42:41,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 08:42:41,551 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 08:42:41,552 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:41" (1/1) ... [2024-11-07 08:42:41,552 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d34833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:41, skipping insertion in model container [2024-11-07 08:42:41,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:41" (1/1) ... [2024-11-07 08:42:41,570 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 08:42:41,702 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-45.i[915,928] [2024-11-07 08:42:41,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 08:42:41,767 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 08:42:41,779 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-45.i[915,928] [2024-11-07 08:42:41,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 08:42:41,827 INFO L204 MainTranslator]: Completed translation [2024-11-07 08:42:41,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:41 WrapperNode [2024-11-07 08:42:41,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 08:42:41,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 08:42:41,829 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 08:42:41,829 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 08:42:41,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:41" (1/1) ... [2024-11-07 08:42:41,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:41" (1/1) ... [2024-11-07 08:42:41,875 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 126 [2024-11-07 08:42:41,877 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 08:42:41,878 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 08:42:41,878 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 08:42:41,878 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 08:42:41,887 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:41" (1/1) ... [2024-11-07 08:42:41,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:41" (1/1) ... [2024-11-07 08:42:41,889 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:41" (1/1) ... [2024-11-07 08:42:41,906 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 08:42:41,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:41" (1/1) ... [2024-11-07 08:42:41,906 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:41" (1/1) ... [2024-11-07 08:42:41,913 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:41" (1/1) ... [2024-11-07 08:42:41,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:41" (1/1) ... [2024-11-07 08:42:41,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:41" (1/1) ... [2024-11-07 08:42:41,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:41" (1/1) ... [2024-11-07 08:42:41,929 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 08:42:41,930 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 08:42:41,930 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 08:42:41,930 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 08:42:41,931 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:41" (1/1) ... [2024-11-07 08:42:41,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 08:42:41,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 08:42:41,969 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 08:42:41,974 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 08:42:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 08:42:41,998 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-07 08:42:41,999 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-07 08:42:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 08:42:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 08:42:42,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 08:42:42,078 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 08:42:42,081 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 08:42:42,354 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-07 08:42:42,354 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 08:42:42,371 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 08:42:42,371 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-07 08:42:42,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:42 BoogieIcfgContainer [2024-11-07 08:42:42,372 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 08:42:42,375 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 08:42:42,375 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 08:42:42,380 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 08:42:42,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:42:41" (1/3) ... [2024-11-07 08:42:42,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c4854a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:42, skipping insertion in model container [2024-11-07 08:42:42,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:41" (2/3) ... [2024-11-07 08:42:42,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c4854a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:42, skipping insertion in model container [2024-11-07 08:42:42,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:42" (3/3) ... [2024-11-07 08:42:42,383 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-45.i [2024-11-07 08:42:42,397 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 08:42:42,397 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 08:42:42,457 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 08:42:42,471 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=LoopHeads, 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;@212ac9c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 08:42:42,472 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-07 08:42:42,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 40 states have internal predecessors, (54), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 08:42:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-07 08:42:42,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 08:42:42,488 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:42,489 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 08:42:42,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 08:42:42,494 INFO L85 PathProgramCache]: Analyzing trace with hash -856670588, now seen corresponding path program 1 times [2024-11-07 08:42:42,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 08:42:42,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335830133] [2024-11-07 08:42:42,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:42:42,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 08:42:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:42,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 08:42:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:42,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 08:42:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:42,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-07 08:42:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:42,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 08:42:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:42,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 08:42:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:42,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-07 08:42:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:42,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-07 08:42:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:42,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-07 08:42:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:42,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 08:42:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:42,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-07 08:42:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:42,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-07 08:42:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:42,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-07 08:42:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:42,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-07 08:42:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:42,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 08:42:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:42,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 08:42:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:42,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 08:42:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-07 08:42:42,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 08:42:42,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335830133] [2024-11-07 08:42:42,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335830133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 08:42:42,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 08:42:42,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 08:42:42,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021139186] [2024-11-07 08:42:42,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 08:42:42,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 08:42:42,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 08:42:42,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 08:42:42,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 08:42:42,948 INFO L87 Difference]: Start difference. First operand has 58 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 40 states have internal predecessors, (54), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-07 08:42:42,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 08:42:42,974 INFO L93 Difference]: Finished difference Result 113 states and 185 transitions. [2024-11-07 08:42:42,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 08:42:42,976 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 107 [2024-11-07 08:42:42,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 08:42:42,982 INFO L225 Difference]: With dead ends: 113 [2024-11-07 08:42:42,983 INFO L226 Difference]: Without dead ends: 54 [2024-11-07 08:42:42,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 08:42:42,988 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 08:42:42,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 08:42:43,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-07 08:42:43,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-07 08:42:43,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 36 states have internal predecessors, (47), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 08:42:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 79 transitions. [2024-11-07 08:42:43,034 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 79 transitions. Word has length 107 [2024-11-07 08:42:43,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 08:42:43,034 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 79 transitions. [2024-11-07 08:42:43,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-07 08:42:43,034 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 79 transitions. [2024-11-07 08:42:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-07 08:42:43,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 08:42:43,038 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:43,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 08:42:43,039 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 08:42:43,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 08:42:43,039 INFO L85 PathProgramCache]: Analyzing trace with hash -400204156, now seen corresponding path program 1 times [2024-11-07 08:42:43,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 08:42:43,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781086850] [2024-11-07 08:42:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:42:43,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 08:42:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:43,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 08:42:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:43,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 08:42:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:43,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-07 08:42:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:43,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 08:42:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:43,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 08:42:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:43,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-07 08:42:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:43,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-07 08:42:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:43,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-07 08:42:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:43,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 08:42:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:43,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-07 08:42:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:43,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-07 08:42:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:43,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-07 08:42:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:43,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-07 08:42:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:43,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 08:42:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:43,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 08:42:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:43,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 08:42:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:42:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-07 08:42:43,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 08:42:43,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781086850] [2024-11-07 08:42:43,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781086850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 08:42:43,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 08:42:43,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 08:42:43,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553647271] [2024-11-07 08:42:43,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 08:42:43,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 08:42:43,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 08:42:43,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 08:42:43,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 08:42:43,376 INFO L87 Difference]: Start difference. First operand 54 states and 79 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-07 08:42:43,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 08:42:43,447 INFO L93 Difference]: Finished difference Result 153 states and 225 transitions. [2024-11-07 08:42:43,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 08:42:43,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 107 [2024-11-07 08:42:43,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 08:42:43,452 INFO L225 Difference]: With dead ends: 153 [2024-11-07 08:42:43,452 INFO L226 Difference]: Without dead ends: 102 [2024-11-07 08:42:43,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 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 08:42:43,456 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 68 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 08:42:43,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 152 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 08:42:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-07 08:42:43,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2024-11-07 08:42:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 65 states have internal predecessors, (81), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-07 08:42:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 145 transitions. [2024-11-07 08:42:43,484 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 145 transitions. Word has length 107 [2024-11-07 08:42:43,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 08:42:43,488 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 145 transitions. [2024-11-07 08:42:43,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-07 08:42:43,489 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 145 transitions. [2024-11-07 08:42:43,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-07 08:42:43,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 08:42:43,492 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:43,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 08:42:43,492 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 08:42:43,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 08:42:43,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1820902653, now seen corresponding path program 1 times [2024-11-07 08:42:43,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 08:42:43,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399141941] [2024-11-07 08:42:43,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:42:43,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 08:42:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat