./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.szymanski.5.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/hardware-verification-bv/btor2c-lazyMod.szymanski.5.prop1-back-serstep.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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', '64bit', '--witnessprinter.graph.data.programhash', '7dab0cd0e088cb655519347fbc33695ed31279472ce082792301b9a86c7cd16a'] 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/hardware-verification-bv/btor2c-lazyMod.szymanski.5.prop1-back-serstep.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 7dab0cd0e088cb655519347fbc33695ed31279472ce082792301b9a86c7cd16a --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 03:41:20,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 03:41:20,813 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-07 03:41:20,819 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 03:41:20,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 03:41:20,839 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 03:41:20,840 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 03:41:20,840 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 03:41:20,840 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 03:41:20,840 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 03:41:20,841 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 03:41:20,841 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 03:41:20,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 03:41:20,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 03:41:20,841 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 03:41:20,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 03:41:20,841 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 03:41:20,841 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 03:41:20,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 03:41:20,841 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 03:41:20,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 03:41:20,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 03:41:20,842 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 03:41:20,842 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 03:41:20,842 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 03:41:20,842 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 03:41:20,842 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 03:41:20,842 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 03:41:20,842 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 03:41:20,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 03:41:20,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 03:41:20,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 03:41:20,842 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 03:41:20,842 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 03:41:20,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 03:41:20,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 03:41:20,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 03:41:20,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 03:41:20,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 03:41:20,842 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dab0cd0e088cb655519347fbc33695ed31279472ce082792301b9a86c7cd16a [2024-11-07 03:41:21,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 03:41:21,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 03:41:21,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 03:41:21,084 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 03:41:21,084 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 03:41:21,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.szymanski.5.prop1-back-serstep.c [2024-11-07 03:41:22,222 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 03:41:22,633 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 03:41:22,634 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.szymanski.5.prop1-back-serstep.c [2024-11-07 03:41:22,668 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/59e6afd00/81b6f826fb52492da9dbd38d891a0f92/FLAGf6e084f51 [2024-11-07 03:41:22,796 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/59e6afd00/81b6f826fb52492da9dbd38d891a0f92 [2024-11-07 03:41:22,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 03:41:22,800 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 03:41:22,802 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 03:41:22,803 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 03:41:22,806 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 03:41:22,808 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:41:22" (1/1) ... [2024-11-07 03:41:22,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211ea0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:22, skipping insertion in model container [2024-11-07 03:41:22,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:41:22" (1/1) ... [2024-11-07 03:41:22,912 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 03:41:23,140 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/hardware-verification-bv/btor2c-lazyMod.szymanski.5.prop1-back-serstep.c[1177,1190] [2024-11-07 03:41:23,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 03:41:23,844 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 03:41:23,853 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/hardware-verification-bv/btor2c-lazyMod.szymanski.5.prop1-back-serstep.c[1177,1190] [2024-11-07 03:41:24,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 03:41:24,265 INFO L204 MainTranslator]: Completed translation [2024-11-07 03:41:24,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:24 WrapperNode [2024-11-07 03:41:24,271 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 03:41:24,272 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 03:41:24,272 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 03:41:24,272 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 03:41:24,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:24" (1/1) ... [2024-11-07 03:41:24,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:24" (1/1) ... [2024-11-07 03:41:26,223 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26081 [2024-11-07 03:41:26,224 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 03:41:26,225 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 03:41:26,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 03:41:26,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 03:41:26,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:24" (1/1) ... [2024-11-07 03:41:26,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:24" (1/1) ... [2024-11-07 03:41:26,883 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:24" (1/1) ... [2024-11-07 03:41:27,197 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 03:41:27,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:24" (1/1) ... [2024-11-07 03:41:27,198 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:24" (1/1) ... [2024-11-07 03:41:27,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:24" (1/1) ... [2024-11-07 03:41:27,871 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:24" (1/1) ... [2024-11-07 03:41:28,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:24" (1/1) ... [2024-11-07 03:41:28,104 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:24" (1/1) ... [2024-11-07 03:41:28,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 03:41:28,600 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 03:41:28,600 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 03:41:28,600 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 03:41:28,601 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:24" (1/1) ... [2024-11-07 03:41:28,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 03:41:28,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 03:41:28,625 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 03:41:28,631 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 03:41:28,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 03:41:28,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 03:41:28,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 03:41:28,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 03:41:29,801 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 03:41:29,803 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 03:42:44,589 INFO L? ?]: Removed 14861 outVars from TransFormulas that were not future-live. [2024-11-07 03:42:44,590 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 03:42:44,675 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 03:42:44,675 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-07 03:42:44,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:42:44 BoogieIcfgContainer [2024-11-07 03:42:44,676 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 03:42:44,677 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 03:42:44,677 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 03:42:44,681 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 03:42:44,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:41:22" (1/3) ... [2024-11-07 03:42:44,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603018d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:42:44, skipping insertion in model container [2024-11-07 03:42:44,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:24" (2/3) ... [2024-11-07 03:42:44,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603018d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:42:44, skipping insertion in model container [2024-11-07 03:42:44,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:42:44" (3/3) ... [2024-11-07 03:42:44,683 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.szymanski.5.prop1-back-serstep.c [2024-11-07 03:42:44,694 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 03:42:44,694 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 03:42:44,865 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 03:42:44,876 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;@338747a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 03:42:44,876 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-07 03:42:44,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 8610 states, 8608 states have (on average 1.4998838289962826) internal successors, (12911), 8609 states have internal predecessors, (12911), 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 03:42:44,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2024-11-07 03:42:44,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 03:42:44,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:42:44,939 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 03:42:44,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 03:42:44,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1203038032, now seen corresponding path program 1 times [2024-11-07 03:42:44,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 03:42:44,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231596715] [2024-11-07 03:42:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:42:44,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 03:42:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:42:48,013 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 03:42:48,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 03:42:48,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231596715] [2024-11-07 03:42:48,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231596715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 03:42:48,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 03:42:48,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 03:42:48,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085495225] [2024-11-07 03:42:48,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 03:42:48,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 03:42:48,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 03:42:48,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 03:42:48,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 03:42:48,062 INFO L87 Difference]: Start difference. First operand has 8610 states, 8608 states have (on average 1.4998838289962826) internal successors, (12911), 8609 states have internal predecessors, (12911), 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) Second operand has 5 states, 5 states have (on average 160.2) internal successors, (801), 5 states have internal predecessors, (801), 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 03:42:54,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 03:42:54,957 INFO L93 Difference]: Finished difference Result 24856 states and 37279 transitions. [2024-11-07 03:42:54,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 03:42:54,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 160.2) internal successors, (801), 5 states have internal predecessors, (801), 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 801 [2024-11-07 03:42:54,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 03:42:55,023 INFO L225 Difference]: With dead ends: 24856 [2024-11-07 03:42:55,023 INFO L226 Difference]: Without dead ends: 16596 [2024-11-07 03:42:55,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 03:42:55,050 INFO L432 NwaCegarLoop]: 9716 mSDtfsCounter, 11998 mSDsluCounter, 28930 mSDsCounter, 0 mSdLazyCounter, 12459 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11998 SdHoareTripleChecker+Valid, 38646 SdHoareTripleChecker+Invalid, 12460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-07 03:42:55,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11998 Valid, 38646 Invalid, 12460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12459 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-07 03:42:55,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16596 states.