./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-crafted/simple_array_index_value_2.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-crafted/simple_array_index_value_2.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --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 6dcb150490c6daa5a1cdb1426c8815f073186f609bef3d7e722a6c72be49ca91 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 15:22:08,078 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 15:22:08,170 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 15:22:08,178 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 15:22:08,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 15:22:08,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 15:22:08,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 15:22:08,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 15:22:08,210 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 15:22:08,210 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 15:22:08,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 15:22:08,211 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 15:22:08,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 15:22:08,214 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 15:22:08,214 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 15:22:08,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 15:22:08,215 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 15:22:08,215 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 15:22:08,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 15:22:08,216 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 15:22:08,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 15:22:08,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 15:22:08,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 15:22:08,221 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 15:22:08,221 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 15:22:08,221 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 15:22:08,222 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 15:22:08,222 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 15:22:08,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 15:22:08,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 15:22:08,223 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 15:22:08,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 15:22:08,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 15:22:08,226 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 15:22:08,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 15:22:08,227 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 15:22:08,227 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 15:22:08,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 15:22:08,227 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 15:22:08,228 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 15:22:08,228 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 15:22:08,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 15:22:08,229 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dcb150490c6daa5a1cdb1426c8815f073186f609bef3d7e722a6c72be49ca91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 15:22:08,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 15:22:08,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 15:22:08,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 15:22:08,598 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 15:22:08,599 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 15:22:08,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-crafted/simple_array_index_value_2.i [2024-09-12 15:22:10,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 15:22:10,376 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 15:22:10,376 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-crafted/simple_array_index_value_2.i [2024-09-12 15:22:10,385 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/0fd698c02/c69cbccd07d74a85b9d59f5d64595d0c/FLAGae419763b [2024-09-12 15:22:10,397 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/0fd698c02/c69cbccd07d74a85b9d59f5d64595d0c [2024-09-12 15:22:10,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 15:22:10,400 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 15:22:10,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 15:22:10,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 15:22:10,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 15:22:10,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 03:22:10" (1/1) ... [2024-09-12 15:22:10,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b84d3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:22:10, skipping insertion in model container [2024-09-12 15:22:10,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 03:22:10" (1/1) ... [2024-09-12 15:22:10,439 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 15:22:10,622 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-crafted/simple_array_index_value_2.i[919,932] [2024-09-12 15:22:10,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 15:22:10,659 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 15:22:10,672 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-crafted/simple_array_index_value_2.i[919,932] [2024-09-12 15:22:10,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 15:22:10,696 INFO L204 MainTranslator]: Completed translation [2024-09-12 15:22:10,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:22:10 WrapperNode [2024-09-12 15:22:10,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 15:22:10,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 15:22:10,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 15:22:10,699 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 15:22:10,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:22:10" (1/1) ... [2024-09-12 15:22:10,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:22:10" (1/1) ... [2024-09-12 15:22:10,720 INFO L138 Inliner]: procedures = 17, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 15:22:10,721 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 15:22:10,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 15:22:10,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 15:22:10,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 15:22:10,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:22:10" (1/1) ... [2024-09-12 15:22:10,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:22:10" (1/1) ... [2024-09-12 15:22:10,733 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:22:10" (1/1) ... [2024-09-12 15:22:10,752 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-09-12 15:22:10,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:22:10" (1/1) ... [2024-09-12 15:22:10,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:22:10" (1/1) ... [2024-09-12 15:22:10,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:22:10" (1/1) ... [2024-09-12 15:22:10,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:22:10" (1/1) ... [2024-09-12 15:22:10,764 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:22:10" (1/1) ... [2024-09-12 15:22:10,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:22:10" (1/1) ... [2024-09-12 15:22:10,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 15:22:10,768 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 15:22:10,769 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 15:22:10,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 15:22:10,770 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:22:10" (1/1) ... [2024-09-12 15:22:10,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 15:22:10,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:22:10,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-12 15:22:10,807 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-12 15:22:10,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 15:22:10,855 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 15:22:10,855 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 15:22:10,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 15:22:10,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 15:22:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 15:22:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 15:22:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-12 15:22:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-12 15:22:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-12 15:22:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 15:22:10,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 15:22:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 15:22:10,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 15:22:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 15:22:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 15:22:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 15:22:10,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 15:22:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 15:22:10,932 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 15:22:10,934 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 15:22:11,102 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-12 15:22:11,102 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 15:22:11,134 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 15:22:11,134 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 15:22:11,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 03:22:11 BoogieIcfgContainer [2024-09-12 15:22:11,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 15:22:11,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 15:22:11,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 15:22:11,142 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 15:22:11,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 03:22:10" (1/3) ... [2024-09-12 15:22:11,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff9bdac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 03:22:11, skipping insertion in model container [2024-09-12 15:22:11,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:22:10" (2/3) ... [2024-09-12 15:22:11,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff9bdac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 03:22:11, skipping insertion in model container [2024-09-12 15:22:11,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 03:22:11" (3/3) ... [2024-09-12 15:22:11,147 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_2.i [2024-09-12 15:22:11,159 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 15:22:11,160 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 15:22:11,220 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 15:22:11,229 INFO L336 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=All, 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;@42cd53d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 15:22:11,230 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 15:22:11,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 15:22:11,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 15:22:11,243 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:22:11,244 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:22:11,245 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:22:11,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:22:11,265 INFO L85 PathProgramCache]: Analyzing trace with hash 302093044, now seen corresponding path program 1 times [2024-09-12 15:22:11,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:22:11,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972111003] [2024-09-12 15:22:11,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:22:11,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:22:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:11,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:22:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:22:11,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:22:11,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972111003] [2024-09-12 15:22:11,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972111003] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 15:22:11,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 15:22:11,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 15:22:11,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82932579] [2024-09-12 15:22:11,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 15:22:11,434 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 15:22:11,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:22:11,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 15:22:11,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 15:22:11,464 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 15:22:11,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:22:11,494 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2024-09-12 15:22:11,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 15:22:11,497 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-12 15:22:11,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:22:11,502 INFO L225 Difference]: With dead ends: 47 [2024-09-12 15:22:11,502 INFO L226 Difference]: Without dead ends: 22 [2024-09-12 15:22:11,505 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 15:22:11,507 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:22:11,508 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:22:11,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-12 15:22:11,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-12 15:22:11,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 15:22:11,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-09-12 15:22:11,537 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 12 [2024-09-12 15:22:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:22:11,538 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-09-12 15:22:11,538 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 15:22:11,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:22:11,539 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-09-12 15:22:11,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 15:22:11,540 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:22:11,540 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:22:11,540 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 15:22:11,540 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:22:11,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:22:11,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1791998188, now seen corresponding path program 1 times [2024-09-12 15:22:11,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:22:11,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538919833] [2024-09-12 15:22:11,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:22:11,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:22:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:11,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:22:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:11,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:22:11,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:22:11,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538919833] [2024-09-12 15:22:11,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538919833] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 15:22:11,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 15:22:11,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 15:22:11,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434190953] [2024-09-12 15:22:11,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 15:22:11,690 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 15:22:11,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:22:11,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 15:22:11,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 15:22:11,692 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 15:22:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:22:11,733 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-09-12 15:22:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 15:22:11,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-12 15:22:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:22:11,736 INFO L225 Difference]: With dead ends: 38 [2024-09-12 15:22:11,736 INFO L226 Difference]: Without dead ends: 28 [2024-09-12 15:22:11,736 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 15:22:11,738 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:22:11,738 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 33 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:22:11,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-12 15:22:11,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2024-09-12 15:22:11,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 15:22:11,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-09-12 15:22:11,751 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 12 [2024-09-12 15:22:11,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:22:11,751 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-09-12 15:22:11,751 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 15:22:11,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:22:11,752 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-09-12 15:22:11,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-12 15:22:11,753 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:22:11,754 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:22:11,754 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 15:22:11,755 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:22:11,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:22:11,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1348305993, now seen corresponding path program 1 times [2024-09-12 15:22:11,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:22:11,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691139072] [2024-09-12 15:22:11,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:22:11,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:22:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:11,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:22:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:11,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 15:22:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:22:11,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:22:11,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691139072] [2024-09-12 15:22:11,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691139072] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:22:11,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950082136] [2024-09-12 15:22:12,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:22:12,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:22:12,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:22:12,005 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:22:12,007 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 15:22:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:12,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 15:22:12,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:22:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:22:12,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:22:12,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:22:12,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950082136] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:22:12,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:22:12,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-09-12 15:22:12,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950866515] [2024-09-12 15:22:12,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:22:12,183 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 15:22:12,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:22:12,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 15:22:12,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-09-12 15:22:12,185 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 15:22:12,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:22:12,321 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2024-09-12 15:22:12,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 15:22:12,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2024-09-12 15:22:12,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:22:12,323 INFO L225 Difference]: With dead ends: 52 [2024-09-12 15:22:12,325 INFO L226 Difference]: Without dead ends: 42 [2024-09-12 15:22:12,325 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-09-12 15:22:12,326 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:22:12,328 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 82 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:22:12,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-12 15:22:12,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2024-09-12 15:22:12,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 15:22:12,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-09-12 15:22:12,343 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 19 [2024-09-12 15:22:12,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:22:12,344 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-09-12 15:22:12,344 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 15:22:12,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:22:12,346 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-09-12 15:22:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-12 15:22:12,349 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:22:12,349 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:22:12,368 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-12 15:22:12,553 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:22:12,554 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:22:12,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:22:12,555 INFO L85 PathProgramCache]: Analyzing trace with hash 142257068, now seen corresponding path program 2 times [2024-09-12 15:22:12,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:22:12,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849658404] [2024-09-12 15:22:12,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:22:12,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:22:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:12,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:22:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:12,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 15:22:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:12,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 15:22:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:12,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 15:22:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:12,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 15:22:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 15:22:12,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:22:12,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849658404] [2024-09-12 15:22:12,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849658404] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:22:12,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441176474] [2024-09-12 15:22:12,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:22:12,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:22:12,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:22:12,890 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:22:12,893 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 15:22:12,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:22:12,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:22:12,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 15:22:12,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:22:13,045 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 15:22:13,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:22:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 15:22:13,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441176474] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:22:13,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:22:13,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-12 15:22:13,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096606617] [2024-09-12 15:22:13,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:22:13,207 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 15:22:13,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:22:13,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 15:22:13,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-09-12 15:22:13,209 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 15:22:13,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:22:13,683 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2024-09-12 15:22:13,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 15:22:13,684 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 40 [2024-09-12 15:22:13,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:22:13,685 INFO L225 Difference]: With dead ends: 88 [2024-09-12 15:22:13,686 INFO L226 Difference]: Without dead ends: 78 [2024-09-12 15:22:13,686 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2024-09-12 15:22:13,687 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 39 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:22:13,688 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 160 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:22:13,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-12 15:22:13,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 50. [2024-09-12 15:22:13,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 15:22:13,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-09-12 15:22:13,702 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 40 [2024-09-12 15:22:13,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:22:13,702 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-09-12 15:22:13,703 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 15:22:13,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:22:13,703 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-09-12 15:22:13,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-12 15:22:13,705 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:22:13,705 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:22:13,721 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-12 15:22:13,909 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:22:13,910 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:22:13,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:22:13,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1112716340, now seen corresponding path program 3 times [2024-09-12 15:22:13,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:22:13,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295514185] [2024-09-12 15:22:13,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:22:13,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:22:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:14,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:22:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:14,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 15:22:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:14,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 15:22:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:14,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 15:22:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:14,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 15:22:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:14,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:22:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:14,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:22:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:14,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:22:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:14,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:22:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:14,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:22:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:14,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:22:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 15:22:14,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:22:14,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295514185] [2024-09-12 15:22:14,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295514185] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:22:14,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258341496] [2024-09-12 15:22:14,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:22:14,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:22:14,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:22:14,443 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:22:14,447 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 15:22:24,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-12 15:22:24,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:22:24,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-12 15:22:24,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:22:24,141 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 15:22:24,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:22:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 15:22:24,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258341496] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:22:24,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:22:24,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-09-12 15:22:24,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150439875] [2024-09-12 15:22:24,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:22:24,544 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 15:22:24,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:22:24,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 15:22:24,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-09-12 15:22:24,546 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 25 states, 25 states have (on average 2.2) internal successors, (55), 25 states have internal predecessors, (55), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 15:22:27,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:22:27,903 INFO L93 Difference]: Finished difference Result 160 states and 215 transitions. [2024-09-12 15:22:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 15:22:27,906 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 25 states have internal predecessors, (55), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 82 [2024-09-12 15:22:27,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:22:27,908 INFO L225 Difference]: With dead ends: 160 [2024-09-12 15:22:27,908 INFO L226 Difference]: Without dead ends: 150 [2024-09-12 15:22:27,909 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 15:22:27,910 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 96 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 15:22:27,910 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 586 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 15:22:27,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-09-12 15:22:27,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 86. [2024-09-12 15:22:27,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 15:22:27,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2024-09-12 15:22:27,946 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 82 [2024-09-12 15:22:27,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:22:27,949 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2024-09-12 15:22:27,949 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 25 states have internal predecessors, (55), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 15:22:27,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:22:27,950 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2024-09-12 15:22:27,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-09-12 15:22:27,953 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:22:27,953 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:22:27,968 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-12 15:22:28,154 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:22:28,154 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:22:28,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:22:28,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1141500916, now seen corresponding path program 4 times [2024-09-12 15:22:28,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:22:28,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707349893] [2024-09-12 15:22:28,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:22:28,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:22:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:22:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 15:22:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 15:22:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 15:22:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 15:22:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:22:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:22:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:22:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:22:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:22:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:22:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:22:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:22:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:22:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:22:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:22:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:22:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:22:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:22:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:22:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:22:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:22:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:22:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 15:22:29,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:22:29,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707349893] [2024-09-12 15:22:29,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707349893] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:22:29,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245108762] [2024-09-12 15:22:29,232 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:22:29,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:22:29,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:22:29,238 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:22:29,240 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 15:22:29,381 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:22:29,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:22:29,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 191 conjuncts are in the unsatisfiable core [2024-09-12 15:22:29,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:22:29,526 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 15 treesize of output 1 [2024-09-12 15:22:29,918 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:29,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:30,280 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:30,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:30,549 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:30,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:30,868 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:30,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:31,185 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:31,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:31,410 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:31,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:31,865 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:31,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:32,097 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:32,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:32,665 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:32,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:33,131 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:33,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:33,304 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:33,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:33,735 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:33,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:34,079 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:34,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:34,255 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:34,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:34,401 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:34,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:34,905 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:34,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:35,237 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:35,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:35,442 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:35,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:35,875 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:35,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:36,033 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:36,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:36,174 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 15:22:36,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 15:22:36,295 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 17 treesize of output 9 [2024-09-12 15:22:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 84 proven. 64 refuted. 0 times theorem prover too weak. 1491 trivial. 0 not checked. [2024-09-12 15:22:36,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:22:40,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245108762] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:22:40,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 15:22:40,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16] total 38 [2024-09-12 15:22:40,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672780942] [2024-09-12 15:22:40,733 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 15:22:40,734 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-12 15:22:40,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:22:40,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-12 15:22:40,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1751, Unknown=1, NotChecked=0, Total=1892 [2024-09-12 15:22:40,739 INFO L87 Difference]: Start difference. First operand 86 states and 108 transitions. Second operand has 38 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 34 states have internal predecessors, (69), 26 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) [2024-09-12 15:22:44,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:22:44,260 INFO L93 Difference]: Finished difference Result 180 states and 228 transitions. [2024-09-12 15:22:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-09-12 15:22:44,261 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 34 states have internal predecessors, (69), 26 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) Word has length 166 [2024-09-12 15:22:44,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:22:44,265 INFO L225 Difference]: With dead ends: 180 [2024-09-12 15:22:44,265 INFO L226 Difference]: Without dead ends: 170 [2024-09-12 15:22:44,267 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 171 SyntacticMatches, 32 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1731 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=667, Invalid=7522, Unknown=1, NotChecked=0, Total=8190 [2024-09-12 15:22:44,268 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 118 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 4348 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 4536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 4348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:22:44,268 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 798 Invalid, 4536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 4348 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-09-12 15:22:44,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-12 15:22:44,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 102. [2024-09-12 15:22:44,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 69 states have internal predecessors, (70), 28 states have call successors, (28), 6 states have call predecessors, (28), 5 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 15:22:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2024-09-12 15:22:44,297 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 166 [2024-09-12 15:22:44,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:22:44,298 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2024-09-12 15:22:44,298 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 34 states have internal predecessors, (69), 26 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) [2024-09-12 15:22:44,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:22:44,299 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2024-09-12 15:22:44,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-09-12 15:22:44,301 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:22:44,302 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:22:44,319 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 15:22:44,502 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:22:44,502 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:22:44,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:22:44,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1553173923, now seen corresponding path program 1 times [2024-09-12 15:22:44,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:22:44,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601683518] [2024-09-12 15:22:44,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:22:44,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:22:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:22:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 15:22:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 15:22:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 15:22:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 15:22:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:22:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:22:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:22:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:22:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:22:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:22:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:22:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:22:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:22:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:22:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:22:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:22:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:22:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:22:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:22:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:22:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:22:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:22:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:22:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:22:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 15:22:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1960 backedges. 2 proven. 852 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2024-09-12 15:22:45,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:22:45,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601683518] [2024-09-12 15:22:45,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601683518] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:22:45,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856230491] [2024-09-12 15:22:45,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:22:45,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:22:45,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:22:45,568 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:22:45,569 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 15:22:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:22:45,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 198 conjuncts are in the unsatisfiable core [2024-09-12 15:22:45,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:22:45,823 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 [2024-09-12 15:22:46,099 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:46,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:46,550 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:46,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:47,035 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:47,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:47,404 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:47,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:47,592 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:47,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:47,715 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:47,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:47,996 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:47,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:48,153 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:48,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:48,623 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:48,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:48,854 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:48,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:49,262 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:49,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:49,499 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:49,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:49,875 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:49,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:50,274 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:50,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:50,414 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:50,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:50,764 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:50,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:51,253 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:51,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:51,371 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:51,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:51,815 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:51,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:52,072 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:52,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:52,409 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:52,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:52,693 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 15:22:52,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 15:22:53,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-09-12 15:22:53,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1960 backedges. 179 proven. 141 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2024-09-12 15:22:53,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:23:01,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856230491] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:23:01,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 15:23:01,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 18] total 41 [2024-09-12 15:23:01,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871822852] [2024-09-12 15:23:01,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 15:23:01,513 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-12 15:23:01,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:23:01,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-12 15:23:01,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1916, Unknown=2, NotChecked=0, Total=2070 [2024-09-12 15:23:01,515 INFO L87 Difference]: Start difference. First operand 102 states and 125 transitions. Second operand has 41 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 29 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2024-09-12 15:23:05,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 15:23:09,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:23:09,536 INFO L93 Difference]: Finished difference Result 206 states and 256 transitions. [2024-09-12 15:23:09,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-12 15:23:09,537 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 29 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) Word has length 187 [2024-09-12 15:23:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:23:09,539 INFO L225 Difference]: With dead ends: 206 [2024-09-12 15:23:09,539 INFO L226 Difference]: Without dead ends: 190 [2024-09-12 15:23:09,542 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 198 SyntacticMatches, 40 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1958 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=700, Invalid=8228, Unknown=2, NotChecked=0, Total=8930 [2024-09-12 15:23:09,543 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 141 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 4702 mSolverCounterSat, 171 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 4874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 4702 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-09-12 15:23:09,543 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1185 Invalid, 4874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 4702 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2024-09-12 15:23:09,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-09-12 15:23:09,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 119. [2024-09-12 15:23:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 80 states have (on average 1.025) internal successors, (82), 81 states have internal predecessors, (82), 31 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 15:23:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 143 transitions. [2024-09-12 15:23:09,585 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 143 transitions. Word has length 187 [2024-09-12 15:23:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:23:09,586 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 143 transitions. [2024-09-12 15:23:09,586 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 29 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2024-09-12 15:23:09,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:23:09,587 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 143 transitions. [2024-09-12 15:23:09,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-09-12 15:23:09,589 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:23:09,589 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:23:09,608 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 15:23:09,793 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 15:23:09,794 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:23:09,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:23:09,794 INFO L85 PathProgramCache]: Analyzing trace with hash 772297452, now seen corresponding path program 2 times [2024-09-12 15:23:09,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:23:09,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658674785] [2024-09-12 15:23:09,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:23:09,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:23:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:23:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 15:23:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 15:23:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 15:23:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 15:23:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:23:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:23:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:23:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:23:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:23:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:23:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:23:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:23:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:23:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:23:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:23:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:23:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:23:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:23:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:23:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:23:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:23:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:23:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:23:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:23:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 15:23:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 15:23:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 15:23:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 15:23:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:23:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2316 backedges. 4 proven. 1001 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2024-09-12 15:23:10,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:23:10,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658674785] [2024-09-12 15:23:10,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658674785] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:23:10,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718113326] [2024-09-12 15:23:10,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:23:10,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:23:10,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:23:10,939 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:23:10,940 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 15:23:11,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:23:11,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:23:11,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 232 conjuncts are in the unsatisfiable core [2024-09-12 15:23:11,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:23:11,596 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 [2024-09-12 15:23:11,837 INFO L349 Elim1Store]: treesize reduction 39, result has 32.8 percent of original size [2024-09-12 15:23:11,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-09-12 15:23:12,189 INFO L349 Elim1Store]: treesize reduction 104, result has 27.3 percent of original size [2024-09-12 15:23:12,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 77 [2024-09-12 15:23:14,182 INFO L349 Elim1Store]: treesize reduction 1316, result has 21.5 percent of original size [2024-09-12 15:23:14,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 6 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 110 case distinctions, treesize of input 190 treesize of output 467 [2024-09-12 15:24:29,017 WARN L293 SmtUtils]: Spent 26.13s on a formula simplification. DAG size of input: 1089 DAG size of output: 1056 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)