/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/nested5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 15:36:32,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 15:36:32,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 15:36:32,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-17 15:36:32,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 15:36:32,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 15:36:32,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 15:36:32,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 15:36:32,282 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 15:36:32,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 15:36:32,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 15:36:32,283 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 15:36:32,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 15:36:32,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 15:36:32,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 15:36:32,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 15:36:32,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 15:36:32,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 15:36:32,285 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 15:36:32,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 15:36:32,285 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 15:36:32,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 15:36:32,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 15:36:32,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 15:36:32,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 15:36:32,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 15:36:32,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 15:36:32,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 15:36:32,285 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 15:36:32,286 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 15:36:32,286 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 15:36:32,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 15:36:32,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 15:36:32,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 15:36:32,462 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 15:36:32,463 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 15:36:32,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-2.c [2022-03-17 15:36:32,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc64c91f0/62b311c62f92467f9f6d7194db2df5ad/FLAG43f980f82 [2022-03-17 15:36:32,845 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 15:36:32,845 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-2.c [2022-03-17 15:36:32,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc64c91f0/62b311c62f92467f9f6d7194db2df5ad/FLAG43f980f82 [2022-03-17 15:36:33,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc64c91f0/62b311c62f92467f9f6d7194db2df5ad [2022-03-17 15:36:33,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 15:36:33,290 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 15:36:33,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 15:36:33,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 15:36:33,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 15:36:33,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:36:33" (1/1) ... [2022-03-17 15:36:33,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d01137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:36:33, skipping insertion in model container [2022-03-17 15:36:33,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:36:33" (1/1) ... [2022-03-17 15:36:33,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 15:36:33,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 15:36:33,438 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-2.c[321,334] [2022-03-17 15:36:33,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 15:36:33,464 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 15:36:33,473 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-2.c[321,334] [2022-03-17 15:36:33,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 15:36:33,492 INFO L208 MainTranslator]: Completed translation [2022-03-17 15:36:33,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:36:33 WrapperNode [2022-03-17 15:36:33,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 15:36:33,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 15:36:33,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 15:36:33,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 15:36:33,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:36:33" (1/1) ... [2022-03-17 15:36:33,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:36:33" (1/1) ... [2022-03-17 15:36:33,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:36:33" (1/1) ... [2022-03-17 15:36:33,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:36:33" (1/1) ... [2022-03-17 15:36:33,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:36:33" (1/1) ... [2022-03-17 15:36:33,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:36:33" (1/1) ... [2022-03-17 15:36:33,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:36:33" (1/1) ... [2022-03-17 15:36:33,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 15:36:33,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 15:36:33,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 15:36:33,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 15:36:33,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:36:33" (1/1) ... [2022-03-17 15:36:33,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 15:36:33,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:36:33,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-17 15:36:33,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-17 15:36:33,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 15:36:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 15:36:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 15:36:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 15:36:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 15:36:33,587 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 15:36:33,587 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 15:36:33,587 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 15:36:33,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 15:36:33,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 15:36:33,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 15:36:33,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 15:36:33,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 15:36:33,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 15:36:33,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 15:36:33,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 15:36:33,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 15:36:33,634 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 15:36:33,635 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 15:36:33,767 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 15:36:33,771 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 15:36:33,771 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-03-17 15:36:33,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:36:33 BoogieIcfgContainer [2022-03-17 15:36:33,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 15:36:33,773 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 15:36:33,773 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 15:36:33,773 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 15:36:33,775 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:36:33" (1/1) ... [2022-03-17 15:36:33,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 03:36:33 BasicIcfg [2022-03-17 15:36:33,805 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 15:36:33,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 15:36:33,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 15:36:33,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 15:36:33,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 03:36:33" (1/4) ... [2022-03-17 15:36:33,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6044c470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:36:33, skipping insertion in model container [2022-03-17 15:36:33,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:36:33" (2/4) ... [2022-03-17 15:36:33,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6044c470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:36:33, skipping insertion in model container [2022-03-17 15:36:33,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:36:33" (3/4) ... [2022-03-17 15:36:33,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6044c470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 03:36:33, skipping insertion in model container [2022-03-17 15:36:33,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 03:36:33" (4/4) ... [2022-03-17 15:36:33,811 INFO L111 eAbstractionObserver]: Analyzing ICFG nested5-2.cJordan [2022-03-17 15:36:33,814 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 15:36:33,815 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 15:36:33,863 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 15:36:33,870 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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 [2022-03-17 15:36:33,870 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 15:36:33,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-17 15:36:33,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-17 15:36:33,887 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:36:33,887 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:36:33,888 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:36:33,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:36:33,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1895308246, now seen corresponding path program 1 times [2022-03-17 15:36:33,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:36:33,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157604285] [2022-03-17 15:36:33,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:36:33,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:36:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:36:34,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:36:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:36:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:36:34,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:36:34,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157604285] [2022-03-17 15:36:34,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157604285] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 15:36:34,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 15:36:34,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-17 15:36:34,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332714017] [2022-03-17 15:36:34,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 15:36:34,068 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 15:36:34,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:36:34,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 15:36:34,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 15:36:34,090 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:36:34,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:36:34,123 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-03-17 15:36:34,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 15:36:34,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 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 15 [2022-03-17 15:36:34,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:36:34,129 INFO L225 Difference]: With dead ends: 28 [2022-03-17 15:36:34,129 INFO L226 Difference]: Without dead ends: 23 [2022-03-17 15:36:34,130 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 15:36:34,134 INFO L912 BasicCegarLoop]: 31 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 15:36:34,136 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 15:36:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-03-17 15:36:34,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-03-17 15:36:34,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 15:36:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-03-17 15:36:34,158 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2022-03-17 15:36:34,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:36:34,159 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-03-17 15:36:34,159 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:36:34,159 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-03-17 15:36:34,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-17 15:36:34,160 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:36:34,160 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:36:34,160 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 15:36:34,160 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:36:34,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:36:34,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1894384725, now seen corresponding path program 1 times [2022-03-17 15:36:34,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:36:34,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402905490] [2022-03-17 15:36:34,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:36:34,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:36:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:36:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:36:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:36:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:36:34,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:36:34,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402905490] [2022-03-17 15:36:34,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402905490] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 15:36:34,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 15:36:34,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 15:36:34,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985707668] [2022-03-17 15:36:34,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 15:36:34,277 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 15:36:34,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:36:34,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 15:36:34,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 15:36:34,284 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:36:34,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:36:34,334 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2022-03-17 15:36:34,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 15:36:34,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 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 15 [2022-03-17 15:36:34,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:36:34,335 INFO L225 Difference]: With dead ends: 32 [2022-03-17 15:36:34,335 INFO L226 Difference]: Without dead ends: 32 [2022-03-17 15:36:34,335 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 15:36:34,336 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 41 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 15:36:34,336 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 31 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 15:36:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-03-17 15:36:34,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2022-03-17 15:36:34,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 15:36:34,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-03-17 15:36:34,343 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 15 [2022-03-17 15:36:34,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:36:34,344 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-03-17 15:36:34,344 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:36:34,345 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-03-17 15:36:34,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-17 15:36:34,346 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:36:34,346 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:36:34,347 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 15:36:34,347 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:36:34,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:36:34,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1473809801, now seen corresponding path program 1 times [2022-03-17 15:36:34,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:36:34,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863518721] [2022-03-17 15:36:34,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:36:34,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:36:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:36:34,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:36:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:36:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:36:34,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:36:34,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863518721] [2022-03-17 15:36:34,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863518721] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 15:36:34,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659912356] [2022-03-17 15:36:34,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:36:34,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:36:34,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:36:34,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 15:36:34,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 15:36:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:36:34,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-17 15:36:34,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 15:36:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:36:34,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 15:36:34,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:36:34,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659912356] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 15:36:34,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 15:36:34,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-03-17 15:36:34,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756194694] [2022-03-17 15:36:34,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 15:36:34,594 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 15:36:34,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:36:34,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 15:36:34,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-17 15:36:34,595 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:36:34,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:36:34,736 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-03-17 15:36:34,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 15:36:34,737 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-03-17 15:36:34,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:36:34,738 INFO L225 Difference]: With dead ends: 37 [2022-03-17 15:36:34,738 INFO L226 Difference]: Without dead ends: 37 [2022-03-17 15:36:34,738 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-17 15:36:34,739 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 56 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 15:36:34,739 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 41 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 15:36:34,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-03-17 15:36:34,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2022-03-17 15:36:34,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 15:36:34,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-03-17 15:36:34,743 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 17 [2022-03-17 15:36:34,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:36:34,743 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-03-17 15:36:34,744 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:36:34,744 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-03-17 15:36:34,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-17 15:36:34,744 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:36:34,744 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:36:34,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-17 15:36:34,951 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:36:34,952 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:36:34,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:36:34,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1878931933, now seen corresponding path program 2 times [2022-03-17 15:36:34,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:36:34,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272508496] [2022-03-17 15:36:34,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:36:34,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:36:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:36:35,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:36:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:36:35,081 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:36:35,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:36:35,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272508496] [2022-03-17 15:36:35,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272508496] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 15:36:35,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195969338] [2022-03-17 15:36:35,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-17 15:36:35,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:36:35,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:36:35,083 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 15:36:35,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-17 15:36:35,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-17 15:36:35,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 15:36:35,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-17 15:36:35,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 15:36:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:36:35,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 15:36:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:36:35,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195969338] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 15:36:35,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 15:36:35,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-03-17 15:36:35,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175294021] [2022-03-17 15:36:35,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 15:36:35,372 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-17 15:36:35,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:36:35,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-17 15:36:35,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-03-17 15:36:35,376 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:36:35,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:36:35,707 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-03-17 15:36:35,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 15:36:35,708 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-03-17 15:36:35,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:36:35,708 INFO L225 Difference]: With dead ends: 49 [2022-03-17 15:36:35,709 INFO L226 Difference]: Without dead ends: 49 [2022-03-17 15:36:35,709 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2022-03-17 15:36:35,710 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 117 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 15:36:35,710 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 51 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 15:36:35,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-03-17 15:36:35,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2022-03-17 15:36:35,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 15:36:35,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-03-17 15:36:35,713 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 23 [2022-03-17 15:36:35,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:36:35,713 INFO L478 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-03-17 15:36:35,713 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:36:35,713 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-03-17 15:36:35,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-17 15:36:35,714 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:36:35,714 INFO L500 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:36:35,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-17 15:36:35,914 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-17 15:36:35,915 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:36:35,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:36:35,915 INFO L85 PathProgramCache]: Analyzing trace with hash -607664937, now seen corresponding path program 3 times [2022-03-17 15:36:35,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:36:35,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312090273] [2022-03-17 15:36:35,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:36:35,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:36:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:36:36,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:36:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:36:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:36:36,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:36:36,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312090273] [2022-03-17 15:36:36,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312090273] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 15:36:36,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117809858] [2022-03-17 15:36:36,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-17 15:36:36,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:36:36,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:36:36,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 15:36:36,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-17 15:36:36,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-03-17 15:36:36,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 15:36:36,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-17 15:36:36,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 15:36:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:36:36,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 15:36:36,607 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:36:36,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117809858] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 15:36:36,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 15:36:36,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2022-03-17 15:36:36,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492141979] [2022-03-17 15:36:36,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 15:36:36,608 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-17 15:36:36,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:36:36,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-17 15:36:36,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2022-03-17 15:36:36,609 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:36:42,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:36:42,408 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2022-03-17 15:36:42,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-17 15:36:42,409 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-03-17 15:36:42,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:36:42,410 INFO L225 Difference]: With dead ends: 73 [2022-03-17 15:36:42,410 INFO L226 Difference]: Without dead ends: 73 [2022-03-17 15:36:42,411 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=643, Invalid=1613, Unknown=0, NotChecked=0, Total=2256 [2022-03-17 15:36:42,411 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 110 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-17 15:36:42,411 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 86 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-17 15:36:42,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-03-17 15:36:42,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2022-03-17 15:36:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 15:36:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2022-03-17 15:36:42,417 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 35 [2022-03-17 15:36:42,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:36:42,417 INFO L478 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2022-03-17 15:36:42,417 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:36:42,417 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2022-03-17 15:36:42,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-17 15:36:42,418 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:36:42,418 INFO L500 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:36:42,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-17 15:36:42,619 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:36:42,619 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:36:42,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:36:42,620 INFO L85 PathProgramCache]: Analyzing trace with hash -943491009, now seen corresponding path program 4 times [2022-03-17 15:36:42,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:36:42,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058961430] [2022-03-17 15:36:42,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:36:42,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:36:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:36:43,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:36:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:36:43,018 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:36:43,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:36:43,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058961430] [2022-03-17 15:36:43,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058961430] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 15:36:43,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071695731] [2022-03-17 15:36:43,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-17 15:36:43,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:36:43,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:36:43,021 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 15:36:43,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-17 15:36:43,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-17 15:36:43,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 15:36:43,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-17 15:36:43,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 15:36:43,325 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:36:43,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 15:36:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:36:44,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071695731] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 15:36:44,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 15:36:44,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 50 [2022-03-17 15:36:44,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375568058] [2022-03-17 15:36:44,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 15:36:44,233 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-17 15:36:44,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:36:44,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-17 15:36:44,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2022-03-17 15:36:44,235 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:38:37,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:38:37,710 INFO L93 Difference]: Finished difference Result 121 states and 128 transitions. [2022-03-17 15:38:37,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-17 15:38:37,710 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-03-17 15:38:37,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:38:37,711 INFO L225 Difference]: With dead ends: 121 [2022-03-17 15:38:37,711 INFO L226 Difference]: Without dead ends: 121 [2022-03-17 15:38:37,713 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 113.7s TimeCoverageRelationStatistics Valid=2440, Invalid=6677, Unknown=3, NotChecked=0, Total=9120 [2022-03-17 15:38:37,714 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 242 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 1766 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-17 15:38:37,714 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 141 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1766 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-17 15:38:37,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-03-17 15:38:37,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 114. [2022-03-17 15:38:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 108 states have internal predecessors, (113), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 15:38:37,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 118 transitions. [2022-03-17 15:38:37,726 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 118 transitions. Word has length 59 [2022-03-17 15:38:37,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:38:37,727 INFO L478 AbstractCegarLoop]: Abstraction has 114 states and 118 transitions. [2022-03-17 15:38:37,727 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:38:37,727 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 118 transitions. [2022-03-17 15:38:37,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-17 15:38:37,730 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:38:37,730 INFO L500 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:38:37,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-17 15:38:37,953 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:38:37,953 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:38:37,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:38:37,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1664764145, now seen corresponding path program 5 times [2022-03-17 15:38:37,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:38:37,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525263122] [2022-03-17 15:38:37,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:38:37,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:38:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:38:39,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:38:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:38:39,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:38:39,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:38:39,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525263122] [2022-03-17 15:38:39,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525263122] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 15:38:39,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129771750] [2022-03-17 15:38:39,079 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-17 15:38:39,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:38:39,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:38:39,082 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 15:38:39,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-17 15:40:50,855 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-03-17 15:40:50,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 15:40:50,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 95 conjunts are in the unsatisfiable core [2022-03-17 15:40:50,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 15:40:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:40:51,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 15:40:54,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:40:54,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129771750] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 15:40:54,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 15:40:54,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 98 [2022-03-17 15:40:54,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265163399] [2022-03-17 15:40:54,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 15:40:54,636 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-03-17 15:40:54,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:40:54,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-03-17 15:40:54,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2496, Invalid=7010, Unknown=0, NotChecked=0, Total=9506 [2022-03-17 15:40:54,639 INFO L87 Difference]: Start difference. First operand 114 states and 118 transitions. Second operand has 98 states, 98 states have (on average 2.0408163265306123) internal successors, (200), 97 states have internal predecessors, (200), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:41:57,002 WARN L232 SmtUtils]: Spent 15.39s on a formula simplification. DAG size of input: 196 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 15:41:59,017 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ c_main_~v~0 39) 4294967296) 268435455) (< (mod (+ 7 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 24) 4294967296) 268435455) (< (mod (+ c_main_~v~0 36) 4294967296) 268435455) (< (mod (+ 44 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_main_~v~0 18) 4294967296) 268435455) (< (mod (+ 32 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 29 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~v~0) 4294967296) 268435455) (< (mod c_main_~v~0 4294967296) 268435455) (< (mod (+ c_main_~v~0 38) 4294967296) 268435455) (< (mod (+ 9 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_main_~v~0 26) 4294967296) 268435455) (< (mod (+ 30 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 10) 4294967296) 268435455) (< (mod (+ 19 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 25) 4294967296) 268435455) (< (mod (+ 42 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_main_~v~0 43) 4294967296) 268435455) (< (mod (+ c_main_~v~0 31) 4294967296) 268435455) (< (mod (+ 23 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 14 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_main_~v~0 33) 4294967296) 268435455) (< (mod (+ 16 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 45) 4294967296) 268435455) (< (mod (+ c_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_main_~v~0 15) 4294967296) 268435455) (< (mod (+ 5 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 8) 4294967296) 268435455) (< (mod (+ 41 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 27) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ 3 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~v~0) 4294967296) 268435455)) is different from false [2022-03-17 15:42:01,027 WARN L833 $PredicateComparison]: unable to prove that (and (< (mod (+ c_main_~v~0 39) 4294967296) 268435455) (< (mod (+ 7 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 24) 4294967296) 268435455) (< (mod (+ c_main_~v~0 36) 4294967296) 268435455) (< (mod (+ 44 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_main_~v~0 18) 4294967296) 268435455) (< (mod (+ 32 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 29 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 38) 4294967296) 268435455) (< (mod (+ 9 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_main_~v~0 26) 4294967296) 268435455) (< (mod (+ 30 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 10) 4294967296) 268435455) (< (mod (+ 19 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 25) 4294967296) 268435455) (< (mod (+ 42 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_main_~v~0 43) 4294967296) 268435455) (< (mod (+ c_main_~v~0 31) 4294967296) 268435455) (< (mod (+ 23 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 14 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_main_~v~0 33) 4294967296) 268435455) (< (mod (+ 16 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 45) 4294967296) 268435455) (< (mod (+ c_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_main_~v~0 15) 4294967296) 268435455) (< (mod (+ 5 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 8) 4294967296) 268435455) (< (mod (+ 41 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 27) 4294967296) 268435455) (< (mod (+ 3 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~v~0) 4294967296) 268435455)) is different from false [2022-03-17 15:43:09,460 WARN L232 SmtUtils]: Spent 17.95s on a formula simplification. DAG size of input: 182 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 15:43:11,475 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ c_main_~v~0 39) 4294967296) 268435455) (< (mod (+ 7 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 24) 4294967296) 268435455) (< (mod (+ c_main_~v~0 36) 4294967296) 268435455) (< (mod (+ 44 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_main_~v~0 18) 4294967296) 268435455) (< (mod (+ 32 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 29 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~v~0) 4294967296) 268435455) (< (mod c_main_~v~0 4294967296) 268435455) (< (mod (+ c_main_~v~0 38) 4294967296) 268435455) (< (mod (+ 9 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_main_~v~0 26) 4294967296) 268435455) (< (mod (+ 30 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 10) 4294967296) 268435455) (< (mod (+ 19 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 25) 4294967296) 268435455) (< (mod (+ 42 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_main_~v~0 43) 4294967296) 268435455) (< (mod (+ c_main_~v~0 31) 4294967296) 268435455) (< (mod (+ 23 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 14 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_main_~v~0 33) 4294967296) 268435455) (< (mod (+ 16 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_main_~v~0 15) 4294967296) 268435455) (< (mod (+ 5 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 8) 4294967296) 268435455) (< (mod (+ 41 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 27) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ 3 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~v~0) 4294967296) 268435455)) is different from false [2022-03-17 15:43:13,482 WARN L833 $PredicateComparison]: unable to prove that (and (< (mod (+ c_main_~v~0 39) 4294967296) 268435455) (< (mod (+ 7 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 24) 4294967296) 268435455) (< (mod (+ c_main_~v~0 36) 4294967296) 268435455) (< (mod (+ c_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_main_~v~0 18) 4294967296) 268435455) (< (mod (+ 32 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 29 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~v~0) 4294967296) 268435455) (< (mod c_main_~v~0 4294967296) 268435455) (< (mod (+ c_main_~v~0 38) 4294967296) 268435455) (< (mod (+ 9 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_main_~v~0 26) 4294967296) 268435455) (< (mod (+ 30 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 10) 4294967296) 268435455) (< (mod (+ 19 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 25) 4294967296) 268435455) (< (mod (+ 42 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_main_~v~0 43) 4294967296) 268435455) (< (mod (+ c_main_~v~0 31) 4294967296) 268435455) (< (mod (+ 23 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 14 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_main_~v~0 33) 4294967296) 268435455) (< (mod (+ 16 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_main_~v~0 15) 4294967296) 268435455) (< (mod (+ 5 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 8) 4294967296) 268435455) (< (mod (+ 41 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 27) 4294967296) 268435455) (< (mod (+ 3 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~v~0) 4294967296) 268435455)) is different from false [2022-03-17 15:44:12,062 WARN L232 SmtUtils]: Spent 8.74s on a formula simplification. DAG size of input: 176 DAG size of output: 12 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 15:44:14,092 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ c_main_~v~0 39) 4294967296) 268435455) (< (mod (+ 7 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 24) 4294967296) 268435455) (< (mod (+ c_main_~v~0 36) 4294967296) 268435455) (< (mod (+ c_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_main_~v~0 18) 4294967296) 268435455) (< (mod (+ 32 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 29 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~v~0) 4294967296) 268435455) (< (mod c_main_~v~0 4294967296) 268435455) (< (mod (+ c_main_~v~0 38) 4294967296) 268435455) (< (mod (+ 9 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_main_~v~0 26) 4294967296) 268435455) (< (mod (+ 30 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 10) 4294967296) 268435455) (< (mod (+ 19 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 25) 4294967296) 268435455) (< (mod (+ 42 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_main_~v~0 31) 4294967296) 268435455) (< (mod (+ 23 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 14 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_main_~v~0 33) 4294967296) 268435455) (< (mod (+ 16 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_main_~v~0 15) 4294967296) 268435455) (< (mod (+ 5 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 8) 4294967296) 268435455) (< (mod (+ 41 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 27) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ 3 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~v~0) 4294967296) 268435455)) is different from false [2022-03-17 15:45:23,408 WARN L232 SmtUtils]: Spent 12.75s on a formula simplification. DAG size of input: 172 DAG size of output: 12 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 15:46:19,269 WARN L232 SmtUtils]: Spent 8.23s on a formula simplification. DAG size of input: 176 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 15:47:20,972 WARN L232 SmtUtils]: Spent 11.05s on a formula simplification. DAG size of input: 172 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 15:48:22,882 WARN L232 SmtUtils]: Spent 15.08s on a formula simplification. DAG size of input: 168 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 15:49:22,191 WARN L232 SmtUtils]: Spent 8.38s on a formula simplification. DAG size of input: 164 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 15:50:11,018 WARN L232 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 160 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 15:51:13,139 WARN L232 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 156 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)