/usr/bin/java -ea -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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 12:48:34,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 12:48:34,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 12:48:34,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 12:48:34,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 12:48:34,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 12:48:34,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 12:48:34,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 12:48:34,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 12:48:34,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 12:48:34,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 12:48:34,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 12:48:34,548 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 12:48:34,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 12:48:34,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 12:48:34,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 12:48:34,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 12:48:34,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 12:48:34,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 12:48:34,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 12:48:34,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 12:48:34,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-28 12:48:34,580 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 12:48:34,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 12:48:34,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 12:48:34,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 12:48:34,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 12:48:34,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 12:48:34,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 12:48:34,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 12:48:34,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 12:48:34,583 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 12:48:34,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 12:48:34,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 12:48:34,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 12:48:34,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 12:48:34,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 12:48:34,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 12:48:34,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 12:48:34,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 12:48:34,584 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 12:48:34,584 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 12:48:34,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 12:48:34,584 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-28 12:48:34,584 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 12:48:34,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 12:48:34,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 12:48:34,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 12:48:34,818 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 12:48:34,818 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 12:48:34,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound5.c [2022-04-28 12:48:34,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1edf3cd76/6ff1b0d2e3a24797806e938628182484/FLAG7882f2ae9 [2022-04-28 12:48:35,205 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 12:48:35,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound5.c [2022-04-28 12:48:35,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1edf3cd76/6ff1b0d2e3a24797806e938628182484/FLAG7882f2ae9 [2022-04-28 12:48:35,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1edf3cd76/6ff1b0d2e3a24797806e938628182484 [2022-04-28 12:48:35,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 12:48:35,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 12:48:35,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 12:48:35,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 12:48:35,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 12:48:35,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 12:48:35" (1/1) ... [2022-04-28 12:48:35,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6782fecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:48:35, skipping insertion in model container [2022-04-28 12:48:35,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 12:48:35" (1/1) ... [2022-04-28 12:48:35,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 12:48:35,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 12:48:35,801 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound5.c[525,538] [2022-04-28 12:48:35,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 12:48:35,821 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 12:48:35,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound5.c[525,538] [2022-04-28 12:48:35,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 12:48:35,847 INFO L208 MainTranslator]: Completed translation [2022-04-28 12:48:35,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:48:35 WrapperNode [2022-04-28 12:48:35,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 12:48:35,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 12:48:35,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 12:48:35,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 12:48:35,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:48:35" (1/1) ... [2022-04-28 12:48:35,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:48:35" (1/1) ... [2022-04-28 12:48:35,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:48:35" (1/1) ... [2022-04-28 12:48:35,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:48:35" (1/1) ... [2022-04-28 12:48:35,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:48:35" (1/1) ... [2022-04-28 12:48:35,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:48:35" (1/1) ... [2022-04-28 12:48:35,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:48:35" (1/1) ... [2022-04-28 12:48:35,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 12:48:35,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 12:48:35,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 12:48:35,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 12:48:35,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:48:35" (1/1) ... [2022-04-28 12:48:35,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 12:48:35,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 12:48:35,900 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) [2022-04-28 12:48:35,922 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 [2022-04-28 12:48:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 12:48:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 12:48:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 12:48:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 12:48:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 12:48:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 12:48:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 12:48:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 12:48:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 12:48:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 12:48:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-28 12:48:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 12:48:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 12:48:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 12:48:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 12:48:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 12:48:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 12:48:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 12:48:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 12:48:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 12:48:35,997 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 12:48:36,000 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 12:48:36,199 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 12:48:36,213 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 12:48:36,213 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 12:48:36,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 12:48:36 BoogieIcfgContainer [2022-04-28 12:48:36,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 12:48:36,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 12:48:36,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 12:48:36,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 12:48:36,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 12:48:35" (1/3) ... [2022-04-28 12:48:36,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799783ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 12:48:36, skipping insertion in model container [2022-04-28 12:48:36,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:48:35" (2/3) ... [2022-04-28 12:48:36,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799783ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 12:48:36, skipping insertion in model container [2022-04-28 12:48:36,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 12:48:36" (3/3) ... [2022-04-28 12:48:36,229 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_unwindbound5.c [2022-04-28 12:48:36,242 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 12:48:36,242 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 12:48:36,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 12:48:36,284 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@60a44138, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4534ede1 [2022-04-28 12:48:36,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 12:48:36,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 12:48:36,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-28 12:48:36,306 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 12:48:36,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 12:48:36,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 12:48:36,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 12:48:36,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1665267581, now seen corresponding path program 1 times [2022-04-28 12:48:36,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 12:48:36,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1701177316] [2022-04-28 12:48:36,340 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 12:48:36,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1665267581, now seen corresponding path program 2 times [2022-04-28 12:48:36,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 12:48:36,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147208452] [2022-04-28 12:48:36,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 12:48:36,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 12:48:36,458 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 12:48:36,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65989671] [2022-04-28 12:48:36,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 12:48:36,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 12:48:36,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 12:48:36,475 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) [2022-04-28 12:48:36,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-28 12:48:36,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 12:48:36,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 12:48:36,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2022-04-28 12:48:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:48:36,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 12:48:36,653 INFO L272 TraceCheckUtils]: 0: Hoare triple {25#true} call ULTIMATE.init(); {25#true} is VALID [2022-04-28 12:48:36,654 INFO L290 TraceCheckUtils]: 1: Hoare triple {25#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {25#true} is VALID [2022-04-28 12:48:36,654 INFO L290 TraceCheckUtils]: 2: Hoare triple {25#true} assume true; {25#true} is VALID [2022-04-28 12:48:36,654 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {25#true} {25#true} #54#return; {25#true} is VALID [2022-04-28 12:48:36,654 INFO L272 TraceCheckUtils]: 4: Hoare triple {25#true} call #t~ret8 := main(); {25#true} is VALID [2022-04-28 12:48:36,655 INFO L290 TraceCheckUtils]: 5: Hoare triple {25#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {25#true} is VALID [2022-04-28 12:48:36,657 INFO L290 TraceCheckUtils]: 6: Hoare triple {25#true} assume !true; {26#false} is VALID [2022-04-28 12:48:36,657 INFO L272 TraceCheckUtils]: 7: Hoare triple {26#false} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {26#false} is VALID [2022-04-28 12:48:36,657 INFO L290 TraceCheckUtils]: 8: Hoare triple {26#false} ~cond := #in~cond; {26#false} is VALID [2022-04-28 12:48:36,657 INFO L290 TraceCheckUtils]: 9: Hoare triple {26#false} assume 0 == ~cond; {26#false} is VALID [2022-04-28 12:48:36,658 INFO L290 TraceCheckUtils]: 10: Hoare triple {26#false} assume !false; {26#false} is VALID [2022-04-28 12:48:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 12:48:36,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 12:48:36,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 12:48:36,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147208452] [2022-04-28 12:48:36,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 12:48:36,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65989671] [2022-04-28 12:48:36,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65989671] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:48:36,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:48:36,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-28 12:48:36,666 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 12:48:36,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1701177316] [2022-04-28 12:48:36,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1701177316] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:48:36,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:48:36,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-28 12:48:36,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708204733] [2022-04-28 12:48:36,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 12:48:36,671 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-28 12:48:36,673 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 12:48:36,675 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 12:48:36,692 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:48:36,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-28 12:48:36,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 12:48:36,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-28 12:48:36,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-28 12:48:36,717 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 12:48:36,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:48:36,754 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2022-04-28 12:48:36,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-28 12:48:36,755 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-28 12:48:36,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 12:48:36,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 12:48:36,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 48 transitions. [2022-04-28 12:48:36,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 12:48:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 48 transitions. [2022-04-28 12:48:36,767 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 2 states and 48 transitions. [2022-04-28 12:48:36,814 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:48:36,821 INFO L225 Difference]: With dead ends: 38 [2022-04-28 12:48:36,821 INFO L226 Difference]: Without dead ends: 17 [2022-04-28 12:48:36,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-28 12:48:36,826 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 12:48:36,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 12:48:36,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-04-28 12:48:36,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-04-28 12:48:36,848 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 12:48:36,848 INFO L82 GeneralOperation]: Start isEquivalent. First operand 17 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:36,849 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:36,849 INFO L87 Difference]: Start difference. First operand 17 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:36,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:48:36,852 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-28 12:48:36,852 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-28 12:48:36,852 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:48:36,852 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:48:36,853 INFO L74 IsIncluded]: Start isIncluded. First operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 17 states. [2022-04-28 12:48:36,853 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 17 states. [2022-04-28 12:48:36,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:48:36,855 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-28 12:48:36,855 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-28 12:48:36,855 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:48:36,856 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:48:36,856 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 12:48:36,856 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 12:48:36,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:36,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-04-28 12:48:36,859 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-04-28 12:48:36,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 12:48:36,859 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-04-28 12:48:36,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 12:48:36,859 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 17 states and 19 transitions. [2022-04-28 12:48:36,876 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:48:36,877 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-28 12:48:36,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-28 12:48:36,877 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 12:48:36,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 12:48:36,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-28 12:48:37,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-04-28 12:48:37,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 12:48:37,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 12:48:37,092 INFO L85 PathProgramCache]: Analyzing trace with hash -318583316, now seen corresponding path program 1 times [2022-04-28 12:48:37,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 12:48:37,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [868431671] [2022-04-28 12:48:37,093 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 12:48:37,093 INFO L85 PathProgramCache]: Analyzing trace with hash -318583316, now seen corresponding path program 2 times [2022-04-28 12:48:37,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 12:48:37,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784364547] [2022-04-28 12:48:37,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 12:48:37,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 12:48:37,123 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 12:48:37,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [662734332] [2022-04-28 12:48:37,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 12:48:37,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 12:48:37,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 12:48:37,125 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) [2022-04-28 12:48:37,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-28 12:48:37,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 12:48:37,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 12:48:37,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-28 12:48:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:48:37,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 12:48:37,373 INFO L272 TraceCheckUtils]: 0: Hoare triple {203#true} call ULTIMATE.init(); {203#true} is VALID [2022-04-28 12:48:37,374 INFO L290 TraceCheckUtils]: 1: Hoare triple {203#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {211#(<= ~counter~0 0)} is VALID [2022-04-28 12:48:37,375 INFO L290 TraceCheckUtils]: 2: Hoare triple {211#(<= ~counter~0 0)} assume true; {211#(<= ~counter~0 0)} is VALID [2022-04-28 12:48:37,375 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {211#(<= ~counter~0 0)} {203#true} #54#return; {211#(<= ~counter~0 0)} is VALID [2022-04-28 12:48:37,376 INFO L272 TraceCheckUtils]: 4: Hoare triple {211#(<= ~counter~0 0)} call #t~ret8 := main(); {211#(<= ~counter~0 0)} is VALID [2022-04-28 12:48:37,377 INFO L290 TraceCheckUtils]: 5: Hoare triple {211#(<= ~counter~0 0)} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {211#(<= ~counter~0 0)} is VALID [2022-04-28 12:48:37,377 INFO L290 TraceCheckUtils]: 6: Hoare triple {211#(<= ~counter~0 0)} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {227#(<= |main_#t~post7| 0)} is VALID [2022-04-28 12:48:37,378 INFO L290 TraceCheckUtils]: 7: Hoare triple {227#(<= |main_#t~post7| 0)} assume !(#t~post7 < 5);havoc #t~post7; {204#false} is VALID [2022-04-28 12:48:37,379 INFO L272 TraceCheckUtils]: 8: Hoare triple {204#false} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {204#false} is VALID [2022-04-28 12:48:37,379 INFO L290 TraceCheckUtils]: 9: Hoare triple {204#false} ~cond := #in~cond; {204#false} is VALID [2022-04-28 12:48:37,379 INFO L290 TraceCheckUtils]: 10: Hoare triple {204#false} assume 0 == ~cond; {204#false} is VALID [2022-04-28 12:48:37,379 INFO L290 TraceCheckUtils]: 11: Hoare triple {204#false} assume !false; {204#false} is VALID [2022-04-28 12:48:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 12:48:37,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 12:48:37,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 12:48:37,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784364547] [2022-04-28 12:48:37,380 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 12:48:37,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662734332] [2022-04-28 12:48:37,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662734332] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:48:37,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:48:37,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 12:48:37,381 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 12:48:37,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [868431671] [2022-04-28 12:48:37,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [868431671] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:48:37,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:48:37,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 12:48:37,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227771247] [2022-04-28 12:48:37,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 12:48:37,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 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 12 [2022-04-28 12:48:37,383 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 12:48:37,383 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 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) [2022-04-28 12:48:37,401 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:48:37,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 12:48:37,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 12:48:37,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 12:48:37,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 12:48:37,403 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 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) [2022-04-28 12:48:37,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:48:37,461 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-04-28 12:48:37,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 12:48:37,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 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 12 [2022-04-28 12:48:37,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 12:48:37,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 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) [2022-04-28 12:48:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2022-04-28 12:48:37,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 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) [2022-04-28 12:48:37,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2022-04-28 12:48:37,474 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 28 transitions. [2022-04-28 12:48:37,501 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:48:37,503 INFO L225 Difference]: With dead ends: 26 [2022-04-28 12:48:37,503 INFO L226 Difference]: Without dead ends: 19 [2022-04-28 12:48:37,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 12:48:37,510 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 12:48:37,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 12:48:37,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-28 12:48:37,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-04-28 12:48:37,520 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 12:48:37,520 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:37,521 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:37,522 INFO L87 Difference]: Start difference. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:37,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:48:37,525 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-28 12:48:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-28 12:48:37,526 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:48:37,526 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:48:37,528 INFO L74 IsIncluded]: Start isIncluded. First operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-28 12:48:37,528 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-28 12:48:37,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:48:37,531 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-28 12:48:37,531 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-28 12:48:37,531 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:48:37,531 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:48:37,532 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 12:48:37,532 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 12:48:37,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:37,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-04-28 12:48:37,534 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-04-28 12:48:37,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 12:48:37,535 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-04-28 12:48:37,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 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) [2022-04-28 12:48:37,535 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 19 states and 21 transitions. [2022-04-28 12:48:37,558 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:48:37,558 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-28 12:48:37,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-28 12:48:37,559 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 12:48:37,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 12:48:37,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-28 12:48:37,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-04-28 12:48:37,782 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 12:48:37,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 12:48:37,783 INFO L85 PathProgramCache]: Analyzing trace with hash -316795856, now seen corresponding path program 1 times [2022-04-28 12:48:37,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 12:48:37,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [871890922] [2022-04-28 12:48:37,784 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 12:48:37,784 INFO L85 PathProgramCache]: Analyzing trace with hash -316795856, now seen corresponding path program 2 times [2022-04-28 12:48:37,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 12:48:37,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939104927] [2022-04-28 12:48:37,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 12:48:37,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 12:48:37,798 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 12:48:37,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308942252] [2022-04-28 12:48:37,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 12:48:37,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 12:48:37,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 12:48:37,807 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) [2022-04-28 12:48:37,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-28 12:48:37,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 12:48:37,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 12:48:37,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-28 12:48:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:48:37,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 12:48:37,984 INFO L272 TraceCheckUtils]: 0: Hoare triple {370#true} call ULTIMATE.init(); {370#true} is VALID [2022-04-28 12:48:37,984 INFO L290 TraceCheckUtils]: 1: Hoare triple {370#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {370#true} is VALID [2022-04-28 12:48:37,985 INFO L290 TraceCheckUtils]: 2: Hoare triple {370#true} assume true; {370#true} is VALID [2022-04-28 12:48:37,985 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {370#true} {370#true} #54#return; {370#true} is VALID [2022-04-28 12:48:37,985 INFO L272 TraceCheckUtils]: 4: Hoare triple {370#true} call #t~ret8 := main(); {370#true} is VALID [2022-04-28 12:48:37,986 INFO L290 TraceCheckUtils]: 5: Hoare triple {370#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {390#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-28 12:48:37,986 INFO L290 TraceCheckUtils]: 6: Hoare triple {390#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {390#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-28 12:48:37,987 INFO L290 TraceCheckUtils]: 7: Hoare triple {390#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !!(#t~post7 < 5);havoc #t~post7; {390#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-28 12:48:37,988 INFO L272 TraceCheckUtils]: 8: Hoare triple {390#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {400#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 12:48:37,988 INFO L290 TraceCheckUtils]: 9: Hoare triple {400#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {404#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 12:48:37,989 INFO L290 TraceCheckUtils]: 10: Hoare triple {404#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {371#false} is VALID [2022-04-28 12:48:37,989 INFO L290 TraceCheckUtils]: 11: Hoare triple {371#false} assume !false; {371#false} is VALID [2022-04-28 12:48:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 12:48:37,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 12:48:37,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 12:48:37,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939104927] [2022-04-28 12:48:37,990 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 12:48:37,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308942252] [2022-04-28 12:48:37,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308942252] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:48:37,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:48:37,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 12:48:37,991 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 12:48:37,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [871890922] [2022-04-28 12:48:37,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [871890922] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:48:37,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:48:37,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 12:48:37,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210757736] [2022-04-28 12:48:37,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 12:48:37,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-28 12:48:37,992 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 12:48:37,992 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 12:48:38,002 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:48:38,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 12:48:38,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 12:48:38,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 12:48:38,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-28 12:48:38,003 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 12:48:38,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:48:38,107 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-04-28 12:48:38,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 12:48:38,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-28 12:48:38,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 12:48:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 12:48:38,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2022-04-28 12:48:38,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 12:48:38,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2022-04-28 12:48:38,117 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 31 transitions. [2022-04-28 12:48:38,144 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:48:38,147 INFO L225 Difference]: With dead ends: 28 [2022-04-28 12:48:38,147 INFO L226 Difference]: Without dead ends: 25 [2022-04-28 12:48:38,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-28 12:48:38,148 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 12:48:38,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 12:48:38,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-28 12:48:38,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-28 12:48:38,163 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 12:48:38,163 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 12:48:38,166 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 12:48:38,166 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 12:48:38,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:48:38,168 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-28 12:48:38,168 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-28 12:48:38,169 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:48:38,169 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:48:38,169 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-28 12:48:38,169 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-28 12:48:38,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:48:38,175 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-28 12:48:38,175 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-28 12:48:38,175 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:48:38,175 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:48:38,175 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 12:48:38,175 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 12:48:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 12:48:38,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-04-28 12:48:38,178 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2022-04-28 12:48:38,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 12:48:38,178 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-04-28 12:48:38,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 12:48:38,178 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 25 states and 27 transitions. [2022-04-28 12:48:38,204 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:48:38,205 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-28 12:48:38,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-28 12:48:38,206 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 12:48:38,206 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 12:48:38,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-28 12:48:38,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 12:48:38,430 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 12:48:38,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 12:48:38,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2089867248, now seen corresponding path program 1 times [2022-04-28 12:48:38,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 12:48:38,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [462552321] [2022-04-28 12:48:42,547 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-28 12:48:42,548 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 12:48:42,548 INFO L85 PathProgramCache]: Analyzing trace with hash -2089867248, now seen corresponding path program 2 times [2022-04-28 12:48:42,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 12:48:42,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367190315] [2022-04-28 12:48:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 12:48:42,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 12:48:42,560 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 12:48:42,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233592908] [2022-04-28 12:48:42,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 12:48:42,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 12:48:42,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 12:48:42,562 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) [2022-04-28 12:48:42,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-28 12:48:42,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 12:48:42,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 12:48:42,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 12:48:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:48:42,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 12:48:42,786 INFO L272 TraceCheckUtils]: 0: Hoare triple {568#true} call ULTIMATE.init(); {568#true} is VALID [2022-04-28 12:48:42,792 INFO L290 TraceCheckUtils]: 1: Hoare triple {568#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {576#(<= ~counter~0 0)} is VALID [2022-04-28 12:48:42,793 INFO L290 TraceCheckUtils]: 2: Hoare triple {576#(<= ~counter~0 0)} assume true; {576#(<= ~counter~0 0)} is VALID [2022-04-28 12:48:42,793 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {576#(<= ~counter~0 0)} {568#true} #54#return; {576#(<= ~counter~0 0)} is VALID [2022-04-28 12:48:42,794 INFO L272 TraceCheckUtils]: 4: Hoare triple {576#(<= ~counter~0 0)} call #t~ret8 := main(); {576#(<= ~counter~0 0)} is VALID [2022-04-28 12:48:42,797 INFO L290 TraceCheckUtils]: 5: Hoare triple {576#(<= ~counter~0 0)} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {576#(<= ~counter~0 0)} is VALID [2022-04-28 12:48:42,798 INFO L290 TraceCheckUtils]: 6: Hoare triple {576#(<= ~counter~0 0)} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {592#(<= ~counter~0 1)} is VALID [2022-04-28 12:48:42,798 INFO L290 TraceCheckUtils]: 7: Hoare triple {592#(<= ~counter~0 1)} assume !!(#t~post7 < 5);havoc #t~post7; {592#(<= ~counter~0 1)} is VALID [2022-04-28 12:48:42,799 INFO L272 TraceCheckUtils]: 8: Hoare triple {592#(<= ~counter~0 1)} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {592#(<= ~counter~0 1)} is VALID [2022-04-28 12:48:42,800 INFO L290 TraceCheckUtils]: 9: Hoare triple {592#(<= ~counter~0 1)} ~cond := #in~cond; {592#(<= ~counter~0 1)} is VALID [2022-04-28 12:48:42,801 INFO L290 TraceCheckUtils]: 10: Hoare triple {592#(<= ~counter~0 1)} assume !(0 == ~cond); {592#(<= ~counter~0 1)} is VALID [2022-04-28 12:48:42,801 INFO L290 TraceCheckUtils]: 11: Hoare triple {592#(<= ~counter~0 1)} assume true; {592#(<= ~counter~0 1)} is VALID [2022-04-28 12:48:42,802 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {592#(<= ~counter~0 1)} {592#(<= ~counter~0 1)} #50#return; {592#(<= ~counter~0 1)} is VALID [2022-04-28 12:48:42,806 INFO L290 TraceCheckUtils]: 13: Hoare triple {592#(<= ~counter~0 1)} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {592#(<= ~counter~0 1)} is VALID [2022-04-28 12:48:42,807 INFO L290 TraceCheckUtils]: 14: Hoare triple {592#(<= ~counter~0 1)} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {617#(<= |main_#t~post7| 1)} is VALID [2022-04-28 12:48:42,807 INFO L290 TraceCheckUtils]: 15: Hoare triple {617#(<= |main_#t~post7| 1)} assume !(#t~post7 < 5);havoc #t~post7; {569#false} is VALID [2022-04-28 12:48:42,808 INFO L272 TraceCheckUtils]: 16: Hoare triple {569#false} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {569#false} is VALID [2022-04-28 12:48:42,808 INFO L290 TraceCheckUtils]: 17: Hoare triple {569#false} ~cond := #in~cond; {569#false} is VALID [2022-04-28 12:48:42,808 INFO L290 TraceCheckUtils]: 18: Hoare triple {569#false} assume 0 == ~cond; {569#false} is VALID [2022-04-28 12:48:42,808 INFO L290 TraceCheckUtils]: 19: Hoare triple {569#false} assume !false; {569#false} is VALID [2022-04-28 12:48:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 12:48:42,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 12:48:42,968 INFO L290 TraceCheckUtils]: 19: Hoare triple {569#false} assume !false; {569#false} is VALID [2022-04-28 12:48:42,969 INFO L290 TraceCheckUtils]: 18: Hoare triple {569#false} assume 0 == ~cond; {569#false} is VALID [2022-04-28 12:48:42,969 INFO L290 TraceCheckUtils]: 17: Hoare triple {569#false} ~cond := #in~cond; {569#false} is VALID [2022-04-28 12:48:42,969 INFO L272 TraceCheckUtils]: 16: Hoare triple {569#false} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {569#false} is VALID [2022-04-28 12:48:42,970 INFO L290 TraceCheckUtils]: 15: Hoare triple {645#(< |main_#t~post7| 5)} assume !(#t~post7 < 5);havoc #t~post7; {569#false} is VALID [2022-04-28 12:48:42,970 INFO L290 TraceCheckUtils]: 14: Hoare triple {649#(< ~counter~0 5)} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {645#(< |main_#t~post7| 5)} is VALID [2022-04-28 12:48:42,971 INFO L290 TraceCheckUtils]: 13: Hoare triple {649#(< ~counter~0 5)} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {649#(< ~counter~0 5)} is VALID [2022-04-28 12:48:42,972 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {568#true} {649#(< ~counter~0 5)} #50#return; {649#(< ~counter~0 5)} is VALID [2022-04-28 12:48:42,972 INFO L290 TraceCheckUtils]: 11: Hoare triple {568#true} assume true; {568#true} is VALID [2022-04-28 12:48:42,972 INFO L290 TraceCheckUtils]: 10: Hoare triple {568#true} assume !(0 == ~cond); {568#true} is VALID [2022-04-28 12:48:42,972 INFO L290 TraceCheckUtils]: 9: Hoare triple {568#true} ~cond := #in~cond; {568#true} is VALID [2022-04-28 12:48:42,972 INFO L272 TraceCheckUtils]: 8: Hoare triple {649#(< ~counter~0 5)} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {568#true} is VALID [2022-04-28 12:48:42,973 INFO L290 TraceCheckUtils]: 7: Hoare triple {649#(< ~counter~0 5)} assume !!(#t~post7 < 5);havoc #t~post7; {649#(< ~counter~0 5)} is VALID [2022-04-28 12:48:42,973 INFO L290 TraceCheckUtils]: 6: Hoare triple {674#(< ~counter~0 4)} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {649#(< ~counter~0 5)} is VALID [2022-04-28 12:48:42,974 INFO L290 TraceCheckUtils]: 5: Hoare triple {674#(< ~counter~0 4)} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {674#(< ~counter~0 4)} is VALID [2022-04-28 12:48:42,974 INFO L272 TraceCheckUtils]: 4: Hoare triple {674#(< ~counter~0 4)} call #t~ret8 := main(); {674#(< ~counter~0 4)} is VALID [2022-04-28 12:48:42,975 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {674#(< ~counter~0 4)} {568#true} #54#return; {674#(< ~counter~0 4)} is VALID [2022-04-28 12:48:42,975 INFO L290 TraceCheckUtils]: 2: Hoare triple {674#(< ~counter~0 4)} assume true; {674#(< ~counter~0 4)} is VALID [2022-04-28 12:48:42,976 INFO L290 TraceCheckUtils]: 1: Hoare triple {568#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {674#(< ~counter~0 4)} is VALID [2022-04-28 12:48:42,976 INFO L272 TraceCheckUtils]: 0: Hoare triple {568#true} call ULTIMATE.init(); {568#true} is VALID [2022-04-28 12:48:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 12:48:42,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 12:48:42,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367190315] [2022-04-28 12:48:42,977 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 12:48:42,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233592908] [2022-04-28 12:48:42,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233592908] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 12:48:42,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 12:48:42,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-04-28 12:48:42,978 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 12:48:42,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [462552321] [2022-04-28 12:48:42,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [462552321] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:48:42,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:48:42,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 12:48:42,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801609622] [2022-04-28 12:48:42,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 12:48:42,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-28 12:48:42,979 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 12:48:42,979 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:43,000 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:48:43,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 12:48:43,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 12:48:43,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 12:48:43,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-28 12:48:43,002 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:43,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:48:43,093 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-04-28 12:48:43,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 12:48:43,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-28 12:48:43,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 12:48:43,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 36 transitions. [2022-04-28 12:48:43,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:43,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 36 transitions. [2022-04-28 12:48:43,099 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 36 transitions. [2022-04-28 12:48:43,131 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:48:43,132 INFO L225 Difference]: With dead ends: 34 [2022-04-28 12:48:43,132 INFO L226 Difference]: Without dead ends: 27 [2022-04-28 12:48:43,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-04-28 12:48:43,135 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 12:48:43,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 51 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 12:48:43,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-28 12:48:43,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-28 12:48:43,156 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 12:48:43,156 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 12:48:43,156 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 12:48:43,156 INFO L87 Difference]: Start difference. First operand 27 states. Second operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 12:48:43,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:48:43,158 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-04-28 12:48:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-04-28 12:48:43,158 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:48:43,158 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:48:43,159 INFO L74 IsIncluded]: Start isIncluded. First operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 27 states. [2022-04-28 12:48:43,159 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 27 states. [2022-04-28 12:48:43,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:48:43,160 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-04-28 12:48:43,160 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-04-28 12:48:43,161 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:48:43,161 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:48:43,161 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 12:48:43,161 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 12:48:43,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 12:48:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-04-28 12:48:43,162 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2022-04-28 12:48:43,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 12:48:43,162 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-04-28 12:48:43,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:43,163 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 27 states and 29 transitions. [2022-04-28 12:48:43,188 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:48:43,188 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-04-28 12:48:43,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-28 12:48:43,188 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 12:48:43,189 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 12:48:43,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-28 12:48:43,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 12:48:43,412 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 12:48:43,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 12:48:43,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2088079788, now seen corresponding path program 1 times [2022-04-28 12:48:43,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 12:48:43,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [496878174] [2022-04-28 12:48:43,613 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-28 12:48:43,613 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 12:48:43,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2088079788, now seen corresponding path program 2 times [2022-04-28 12:48:43,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 12:48:43,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270210761] [2022-04-28 12:48:43,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 12:48:43,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 12:48:43,626 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 12:48:43,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [410596761] [2022-04-28 12:48:43,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 12:48:43,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 12:48:43,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 12:48:43,628 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) [2022-04-28 12:48:43,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-28 12:48:43,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 12:48:43,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 12:48:43,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjunts are in the unsatisfiable core [2022-04-28 12:48:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:48:43,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 12:48:43,961 INFO L272 TraceCheckUtils]: 0: Hoare triple {873#true} call ULTIMATE.init(); {873#true} is VALID [2022-04-28 12:48:43,962 INFO L290 TraceCheckUtils]: 1: Hoare triple {873#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {873#true} is VALID [2022-04-28 12:48:43,962 INFO L290 TraceCheckUtils]: 2: Hoare triple {873#true} assume true; {873#true} is VALID [2022-04-28 12:48:43,962 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {873#true} {873#true} #54#return; {873#true} is VALID [2022-04-28 12:48:43,962 INFO L272 TraceCheckUtils]: 4: Hoare triple {873#true} call #t~ret8 := main(); {873#true} is VALID [2022-04-28 12:48:43,963 INFO L290 TraceCheckUtils]: 5: Hoare triple {873#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {893#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-28 12:48:43,963 INFO L290 TraceCheckUtils]: 6: Hoare triple {893#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {893#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-28 12:48:43,964 INFO L290 TraceCheckUtils]: 7: Hoare triple {893#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !!(#t~post7 < 5);havoc #t~post7; {893#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-28 12:48:43,964 INFO L272 TraceCheckUtils]: 8: Hoare triple {893#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {873#true} is VALID [2022-04-28 12:48:43,964 INFO L290 TraceCheckUtils]: 9: Hoare triple {873#true} ~cond := #in~cond; {906#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-28 12:48:43,965 INFO L290 TraceCheckUtils]: 10: Hoare triple {906#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {910#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 12:48:43,965 INFO L290 TraceCheckUtils]: 11: Hoare triple {910#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {910#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 12:48:43,966 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {910#(not (= |__VERIFIER_assert_#in~cond| 0))} {893#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} #50#return; {893#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-28 12:48:43,967 INFO L290 TraceCheckUtils]: 13: Hoare triple {893#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {920#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-28 12:48:43,967 INFO L290 TraceCheckUtils]: 14: Hoare triple {920#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {920#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-28 12:48:43,968 INFO L290 TraceCheckUtils]: 15: Hoare triple {920#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !!(#t~post7 < 5);havoc #t~post7; {920#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-28 12:48:44,018 INFO L272 TraceCheckUtils]: 16: Hoare triple {920#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {930#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 12:48:44,019 INFO L290 TraceCheckUtils]: 17: Hoare triple {930#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {934#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 12:48:44,019 INFO L290 TraceCheckUtils]: 18: Hoare triple {934#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {874#false} is VALID [2022-04-28 12:48:44,019 INFO L290 TraceCheckUtils]: 19: Hoare triple {874#false} assume !false; {874#false} is VALID [2022-04-28 12:48:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 12:48:44,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 12:48:58,456 INFO L290 TraceCheckUtils]: 19: Hoare triple {874#false} assume !false; {874#false} is VALID [2022-04-28 12:48:58,457 INFO L290 TraceCheckUtils]: 18: Hoare triple {934#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {874#false} is VALID [2022-04-28 12:48:58,457 INFO L290 TraceCheckUtils]: 17: Hoare triple {930#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {934#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 12:48:58,458 INFO L272 TraceCheckUtils]: 16: Hoare triple {950#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {930#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 12:48:58,459 INFO L290 TraceCheckUtils]: 15: Hoare triple {950#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} assume !!(#t~post7 < 5);havoc #t~post7; {950#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-28 12:48:58,459 INFO L290 TraceCheckUtils]: 14: Hoare triple {950#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {950#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-28 12:48:58,541 INFO L290 TraceCheckUtils]: 13: Hoare triple {960#(= (+ (* main_~z~0 main_~x~0) main_~a~0 (* main_~az~0 (* main_~z~0 main_~y~0))) (+ main_~a~0 (* main_~z~0 (+ (* main_~z~0 main_~x~0) main_~a~0))))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {950#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-28 12:48:58,546 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {910#(not (= |__VERIFIER_assert_#in~cond| 0))} {873#true} #50#return; {960#(= (+ (* main_~z~0 main_~x~0) main_~a~0 (* main_~az~0 (* main_~z~0 main_~y~0))) (+ main_~a~0 (* main_~z~0 (+ (* main_~z~0 main_~x~0) main_~a~0))))} is VALID [2022-04-28 12:48:58,546 INFO L290 TraceCheckUtils]: 11: Hoare triple {910#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {910#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 12:48:58,547 INFO L290 TraceCheckUtils]: 10: Hoare triple {973#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {910#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 12:48:58,547 INFO L290 TraceCheckUtils]: 9: Hoare triple {873#true} ~cond := #in~cond; {973#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-28 12:48:58,547 INFO L272 TraceCheckUtils]: 8: Hoare triple {873#true} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {873#true} is VALID [2022-04-28 12:48:58,548 INFO L290 TraceCheckUtils]: 7: Hoare triple {873#true} assume !!(#t~post7 < 5);havoc #t~post7; {873#true} is VALID [2022-04-28 12:48:58,548 INFO L290 TraceCheckUtils]: 6: Hoare triple {873#true} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {873#true} is VALID [2022-04-28 12:48:58,548 INFO L290 TraceCheckUtils]: 5: Hoare triple {873#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {873#true} is VALID [2022-04-28 12:48:58,548 INFO L272 TraceCheckUtils]: 4: Hoare triple {873#true} call #t~ret8 := main(); {873#true} is VALID [2022-04-28 12:48:58,548 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {873#true} {873#true} #54#return; {873#true} is VALID [2022-04-28 12:48:58,548 INFO L290 TraceCheckUtils]: 2: Hoare triple {873#true} assume true; {873#true} is VALID [2022-04-28 12:48:58,549 INFO L290 TraceCheckUtils]: 1: Hoare triple {873#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {873#true} is VALID [2022-04-28 12:48:58,549 INFO L272 TraceCheckUtils]: 0: Hoare triple {873#true} call ULTIMATE.init(); {873#true} is VALID [2022-04-28 12:48:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 12:48:58,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 12:48:58,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270210761] [2022-04-28 12:48:58,549 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 12:48:58,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410596761] [2022-04-28 12:48:58,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410596761] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 12:48:58,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 12:48:58,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-04-28 12:48:58,550 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 12:48:58,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [496878174] [2022-04-28 12:48:58,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [496878174] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:48:58,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:48:58,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-28 12:48:58,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280699369] [2022-04-28 12:48:58,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 12:48:58,551 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-28 12:48:58,551 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 12:48:58,551 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:58,600 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:48:58,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-28 12:48:58,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 12:48:58,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-28 12:48:58,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-04-28 12:48:58,601 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:59,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:48:59,560 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-04-28 12:48:59,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-28 12:48:59,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-28 12:48:59,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 12:48:59,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 36 transitions. [2022-04-28 12:48:59,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:59,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 36 transitions. [2022-04-28 12:48:59,563 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 36 transitions. [2022-04-28 12:48:59,641 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:48:59,642 INFO L225 Difference]: With dead ends: 36 [2022-04-28 12:48:59,642 INFO L226 Difference]: Without dead ends: 33 [2022-04-28 12:48:59,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-28 12:48:59,643 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-28 12:48:59,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 79 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-28 12:48:59,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-04-28 12:48:59,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-04-28 12:48:59,662 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 12:48:59,663 INFO L82 GeneralOperation]: Start isEquivalent. First operand 33 states. Second operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 12:48:59,663 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 12:48:59,663 INFO L87 Difference]: Start difference. First operand 33 states. Second operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 12:48:59,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:48:59,664 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-04-28 12:48:59,665 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-04-28 12:48:59,665 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:48:59,665 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:48:59,665 INFO L74 IsIncluded]: Start isIncluded. First operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 33 states. [2022-04-28 12:48:59,665 INFO L87 Difference]: Start difference. First operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 33 states. [2022-04-28 12:48:59,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:48:59,667 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-04-28 12:48:59,667 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-04-28 12:48:59,667 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:48:59,667 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:48:59,667 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 12:48:59,667 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 12:48:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 12:48:59,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-04-28 12:48:59,669 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 20 [2022-04-28 12:48:59,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 12:48:59,669 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-04-28 12:48:59,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 12:48:59,669 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 33 states and 35 transitions. [2022-04-28 12:48:59,728 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:48:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-04-28 12:48:59,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-28 12:48:59,729 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 12:48:59,729 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 12:48:59,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-28 12:48:59,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 12:48:59,930 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 12:48:59,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 12:48:59,930 INFO L85 PathProgramCache]: Analyzing trace with hash -696181196, now seen corresponding path program 3 times [2022-04-28 12:48:59,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 12:48:59,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [28498707] [2022-04-28 12:49:02,143 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-28 12:49:02,143 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 12:49:02,144 INFO L85 PathProgramCache]: Analyzing trace with hash -696181196, now seen corresponding path program 4 times [2022-04-28 12:49:02,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 12:49:02,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120968417] [2022-04-28 12:49:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 12:49:02,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 12:49:02,174 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 12:49:02,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2031108999] [2022-04-28 12:49:02,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-28 12:49:02,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 12:49:02,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 12:49:02,180 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 12:49:02,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-28 12:49:18,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-28 12:49:18,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 12:49:18,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2022-04-28 12:49:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:49:18,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 12:49:29,289 WARN L828 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-28 12:49:38,606 WARN L828 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-28 12:49:50,648 WARN L828 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-28 12:50:32,364 WARN L232 SmtUtils]: Spent 26.49s on a formula simplification. DAG size of input: 43 DAG size of output: 35 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-28 12:51:04,430 WARN L828 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-28 12:51:07,137 WARN L828 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-28 12:51:13,327 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse8 (* (- 1) c_main_~a~0))) (let ((.cse7 (= c_main_~z~0 0)) (.cse0 (+ .cse8 c_main_~x~0))) (or (let ((.cse1 (+ .cse8 (div .cse0 c_main_~z~0)))) (and (= (mod c_main_~y~0 c_main_~z~0) 0) (= (mod .cse0 c_main_~z~0) 0) (= (mod .cse1 c_main_~z~0) 0) (let ((.cse6 (div .cse1 c_main_~z~0))) (let ((.cse5 (* .cse6 c_main_~z~0)) (.cse3 (= c_main_~az~0 0)) (.cse4 (div c_main_~y~0 c_main_~z~0))) (or (let ((.cse2 (+ .cse5 (* (- 1) .cse6) c_main_~a~0))) (and (= (mod .cse2 c_main_~az~0) 0) (not .cse3) (= .cse4 (* (div .cse2 c_main_~az~0) c_main_~z~0)))) (and (= .cse6 (+ .cse5 c_main_~a~0)) .cse3 (= 0 (mod .cse4 c_main_~z~0)))))) (not .cse7))) (and (= c_main_~y~0 0) .cse7 (= 0 .cse0))))) is different from false [2022-04-28 12:51:29,208 INFO L272 TraceCheckUtils]: 0: Hoare triple {1211#true} call ULTIMATE.init(); {1211#true} is VALID [2022-04-28 12:51:29,208 INFO L290 TraceCheckUtils]: 1: Hoare triple {1211#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {1211#true} is VALID [2022-04-28 12:51:29,209 INFO L290 TraceCheckUtils]: 2: Hoare triple {1211#true} assume true; {1211#true} is VALID [2022-04-28 12:51:29,209 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1211#true} {1211#true} #54#return; {1211#true} is VALID [2022-04-28 12:51:29,209 INFO L272 TraceCheckUtils]: 4: Hoare triple {1211#true} call #t~ret8 := main(); {1211#true} is VALID [2022-04-28 12:51:29,209 INFO L290 TraceCheckUtils]: 5: Hoare triple {1211#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {1211#true} is VALID [2022-04-28 12:51:29,209 INFO L290 TraceCheckUtils]: 6: Hoare triple {1211#true} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {1211#true} is VALID [2022-04-28 12:51:29,209 INFO L290 TraceCheckUtils]: 7: Hoare triple {1211#true} assume !!(#t~post7 < 5);havoc #t~post7; {1211#true} is VALID [2022-04-28 12:51:29,209 INFO L272 TraceCheckUtils]: 8: Hoare triple {1211#true} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {1211#true} is VALID [2022-04-28 12:51:29,212 INFO L290 TraceCheckUtils]: 9: Hoare triple {1211#true} ~cond := #in~cond; {1243#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-28 12:51:29,212 INFO L290 TraceCheckUtils]: 10: Hoare triple {1243#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {1247#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 12:51:29,223 INFO L290 TraceCheckUtils]: 11: Hoare triple {1247#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {1247#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 12:51:29,224 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {1247#(not (= |__VERIFIER_assert_#in~cond| 0))} {1211#true} #50#return; {1254#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-28 12:51:31,225 WARN L290 TraceCheckUtils]: 13: Hoare triple {1254#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {1258#(or (and (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (or (and (= (mod main_~y~0 main_~z~0) 0) (= (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0))) (= main_~az~0 0)) (and (= (mod (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) 0) (not (= main_~az~0 0)) (= (* (div (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) main_~z~0) main_~y~0))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} is UNKNOWN [2022-04-28 12:51:31,226 INFO L290 TraceCheckUtils]: 14: Hoare triple {1258#(or (and (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (or (and (= (mod main_~y~0 main_~z~0) 0) (= (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0))) (= main_~az~0 0)) (and (= (mod (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) 0) (not (= main_~az~0 0)) (= (* (div (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) main_~z~0) main_~y~0))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {1258#(or (and (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (or (and (= (mod main_~y~0 main_~z~0) 0) (= (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0))) (= main_~az~0 0)) (and (= (mod (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) 0) (not (= main_~az~0 0)) (= (* (div (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) main_~z~0) main_~y~0))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} is VALID [2022-04-28 12:51:31,228 INFO L290 TraceCheckUtils]: 15: Hoare triple {1258#(or (and (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (or (and (= (mod main_~y~0 main_~z~0) 0) (= (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0))) (= main_~az~0 0)) (and (= (mod (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) 0) (not (= main_~az~0 0)) (= (* (div (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) main_~z~0) main_~y~0))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} assume !!(#t~post7 < 5);havoc #t~post7; {1258#(or (and (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (or (and (= (mod main_~y~0 main_~z~0) 0) (= (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0))) (= main_~az~0 0)) (and (= (mod (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) 0) (not (= main_~az~0 0)) (= (* (div (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) main_~z~0) main_~y~0))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} is VALID [2022-04-28 12:51:31,228 INFO L272 TraceCheckUtils]: 16: Hoare triple {1258#(or (and (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (or (and (= (mod main_~y~0 main_~z~0) 0) (= (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0))) (= main_~az~0 0)) (and (= (mod (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) 0) (not (= main_~az~0 0)) (= (* (div (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) main_~z~0) main_~y~0))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {1211#true} is VALID [2022-04-28 12:51:31,229 INFO L290 TraceCheckUtils]: 17: Hoare triple {1211#true} ~cond := #in~cond; {1243#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-28 12:51:31,230 INFO L290 TraceCheckUtils]: 18: Hoare triple {1243#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {1247#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 12:51:31,230 INFO L290 TraceCheckUtils]: 19: Hoare triple {1247#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {1247#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 12:51:31,231 INFO L284 TraceCheckUtils]: 20: Hoare quadruple {1247#(not (= |__VERIFIER_assert_#in~cond| 0))} {1258#(or (and (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (or (and (= (mod main_~y~0 main_~z~0) 0) (= (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0))) (= main_~az~0 0)) (and (= (mod (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) 0) (not (= main_~az~0 0)) (= (* (div (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) main_~z~0) main_~y~0))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} #50#return; {1258#(or (and (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (or (and (= (mod main_~y~0 main_~z~0) 0) (= (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0))) (= main_~az~0 0)) (and (= (mod (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) 0) (not (= main_~az~0 0)) (= (* (div (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) main_~z~0) main_~y~0))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} is VALID [2022-04-28 12:51:33,233 WARN L290 TraceCheckUtils]: 21: Hoare triple {1258#(or (and (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (or (and (= (mod main_~y~0 main_~z~0) 0) (= (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0))) (= main_~az~0 0)) (and (= (mod (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) 0) (not (= main_~az~0 0)) (= (* (div (+ (* (- 1) (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) main_~az~0) main_~z~0) main_~y~0))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {1283#(or (and (= main_~z~0 0) (= main_~y~0 0) (= (+ (* (- 1) main_~a~0) main_~x~0) 0)) (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (= (mod (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0) 0) (not (= main_~z~0 0)) (or (and (= 0 (mod (+ (* (- 1) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) main_~az~0)) (= (* main_~z~0 (div (+ (* (- 1) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) main_~az~0)) (div main_~y~0 main_~z~0)) (not (= main_~az~0 0))) (and (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= main_~az~0 0) (= (+ main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))))))} is UNKNOWN [2022-04-28 12:51:33,235 INFO L290 TraceCheckUtils]: 22: Hoare triple {1283#(or (and (= main_~z~0 0) (= main_~y~0 0) (= (+ (* (- 1) main_~a~0) main_~x~0) 0)) (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (= (mod (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0) 0) (not (= main_~z~0 0)) (or (and (= 0 (mod (+ (* (- 1) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) main_~az~0)) (= (* main_~z~0 (div (+ (* (- 1) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) main_~az~0)) (div main_~y~0 main_~z~0)) (not (= main_~az~0 0))) (and (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= main_~az~0 0) (= (+ main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))))))} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {1283#(or (and (= main_~z~0 0) (= main_~y~0 0) (= (+ (* (- 1) main_~a~0) main_~x~0) 0)) (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (= (mod (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0) 0) (not (= main_~z~0 0)) (or (and (= 0 (mod (+ (* (- 1) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) main_~az~0)) (= (* main_~z~0 (div (+ (* (- 1) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) main_~az~0)) (div main_~y~0 main_~z~0)) (not (= main_~az~0 0))) (and (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= main_~az~0 0) (= (+ main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))))))} is VALID [2022-04-28 12:51:33,236 INFO L290 TraceCheckUtils]: 23: Hoare triple {1283#(or (and (= main_~z~0 0) (= main_~y~0 0) (= (+ (* (- 1) main_~a~0) main_~x~0) 0)) (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (= (mod (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0) 0) (not (= main_~z~0 0)) (or (and (= 0 (mod (+ (* (- 1) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) main_~az~0)) (= (* main_~z~0 (div (+ (* (- 1) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) main_~az~0)) (div main_~y~0 main_~z~0)) (not (= main_~az~0 0))) (and (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= main_~az~0 0) (= (+ main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))))))} assume !(#t~post7 < 5);havoc #t~post7; {1283#(or (and (= main_~z~0 0) (= main_~y~0 0) (= (+ (* (- 1) main_~a~0) main_~x~0) 0)) (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (= (mod (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0) 0) (not (= main_~z~0 0)) (or (and (= 0 (mod (+ (* (- 1) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) main_~az~0)) (= (* main_~z~0 (div (+ (* (- 1) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) main_~az~0)) (div main_~y~0 main_~z~0)) (not (= main_~az~0 0))) (and (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= main_~az~0 0) (= (+ main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))))))} is VALID [2022-04-28 12:51:33,410 INFO L272 TraceCheckUtils]: 24: Hoare triple {1283#(or (and (= main_~z~0 0) (= main_~y~0 0) (= (+ (* (- 1) main_~a~0) main_~x~0) 0)) (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (= (mod (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0) 0) (not (= main_~z~0 0)) (or (and (= 0 (mod (+ (* (- 1) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) main_~az~0)) (= (* main_~z~0 (div (+ (* (- 1) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) main_~az~0)) (div main_~y~0 main_~z~0)) (not (= main_~az~0 0))) (and (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= main_~az~0 0) (= (+ main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0))))))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {1293#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 12:51:33,410 INFO L290 TraceCheckUtils]: 25: Hoare triple {1293#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1297#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 12:51:33,411 INFO L290 TraceCheckUtils]: 26: Hoare triple {1297#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1212#false} is VALID [2022-04-28 12:51:33,411 INFO L290 TraceCheckUtils]: 27: Hoare triple {1212#false} assume !false; {1212#false} is VALID [2022-04-28 12:51:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2022-04-28 12:51:33,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 12:51:43,378 INFO L290 TraceCheckUtils]: 27: Hoare triple {1212#false} assume !false; {1212#false} is VALID [2022-04-28 12:51:43,378 INFO L290 TraceCheckUtils]: 26: Hoare triple {1297#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1212#false} is VALID [2022-04-28 12:51:43,379 INFO L290 TraceCheckUtils]: 25: Hoare triple {1293#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1297#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 12:51:43,379 INFO L272 TraceCheckUtils]: 24: Hoare triple {1254#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {1293#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 12:51:43,380 INFO L290 TraceCheckUtils]: 23: Hoare triple {1254#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} assume !(#t~post7 < 5);havoc #t~post7; {1254#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-28 12:51:43,380 INFO L290 TraceCheckUtils]: 22: Hoare triple {1254#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {1254#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-28 12:51:43,439 INFO L290 TraceCheckUtils]: 21: Hoare triple {1322#(= (+ (* main_~z~0 main_~x~0) main_~a~0 (* main_~az~0 (* main_~z~0 main_~y~0))) (+ main_~a~0 (* main_~z~0 (+ (* main_~z~0 main_~x~0) main_~a~0))))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {1254#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-28 12:51:43,443 INFO L284 TraceCheckUtils]: 20: Hoare quadruple {1247#(not (= |__VERIFIER_assert_#in~cond| 0))} {1211#true} #50#return; {1322#(= (+ (* main_~z~0 main_~x~0) main_~a~0 (* main_~az~0 (* main_~z~0 main_~y~0))) (+ main_~a~0 (* main_~z~0 (+ (* main_~z~0 main_~x~0) main_~a~0))))} is VALID [2022-04-28 12:51:43,443 INFO L290 TraceCheckUtils]: 19: Hoare triple {1247#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {1247#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 12:51:43,443 INFO L290 TraceCheckUtils]: 18: Hoare triple {1335#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {1247#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 12:51:43,444 INFO L290 TraceCheckUtils]: 17: Hoare triple {1211#true} ~cond := #in~cond; {1335#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-28 12:51:43,444 INFO L272 TraceCheckUtils]: 16: Hoare triple {1211#true} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {1211#true} is VALID [2022-04-28 12:51:43,444 INFO L290 TraceCheckUtils]: 15: Hoare triple {1211#true} assume !!(#t~post7 < 5);havoc #t~post7; {1211#true} is VALID [2022-04-28 12:51:43,444 INFO L290 TraceCheckUtils]: 14: Hoare triple {1211#true} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {1211#true} is VALID [2022-04-28 12:51:43,444 INFO L290 TraceCheckUtils]: 13: Hoare triple {1211#true} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {1211#true} is VALID [2022-04-28 12:51:43,444 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {1211#true} {1211#true} #50#return; {1211#true} is VALID [2022-04-28 12:51:43,444 INFO L290 TraceCheckUtils]: 11: Hoare triple {1211#true} assume true; {1211#true} is VALID [2022-04-28 12:51:43,444 INFO L290 TraceCheckUtils]: 10: Hoare triple {1211#true} assume !(0 == ~cond); {1211#true} is VALID [2022-04-28 12:51:43,444 INFO L290 TraceCheckUtils]: 9: Hoare triple {1211#true} ~cond := #in~cond; {1211#true} is VALID [2022-04-28 12:51:43,444 INFO L272 TraceCheckUtils]: 8: Hoare triple {1211#true} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {1211#true} is VALID [2022-04-28 12:51:43,444 INFO L290 TraceCheckUtils]: 7: Hoare triple {1211#true} assume !!(#t~post7 < 5);havoc #t~post7; {1211#true} is VALID [2022-04-28 12:51:43,445 INFO L290 TraceCheckUtils]: 6: Hoare triple {1211#true} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {1211#true} is VALID [2022-04-28 12:51:43,445 INFO L290 TraceCheckUtils]: 5: Hoare triple {1211#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {1211#true} is VALID [2022-04-28 12:51:43,445 INFO L272 TraceCheckUtils]: 4: Hoare triple {1211#true} call #t~ret8 := main(); {1211#true} is VALID [2022-04-28 12:51:43,445 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1211#true} {1211#true} #54#return; {1211#true} is VALID [2022-04-28 12:51:43,445 INFO L290 TraceCheckUtils]: 2: Hoare triple {1211#true} assume true; {1211#true} is VALID [2022-04-28 12:51:43,445 INFO L290 TraceCheckUtils]: 1: Hoare triple {1211#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {1211#true} is VALID [2022-04-28 12:51:43,445 INFO L272 TraceCheckUtils]: 0: Hoare triple {1211#true} call ULTIMATE.init(); {1211#true} is VALID [2022-04-28 12:51:43,446 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 12:51:43,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 12:51:43,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120968417] [2022-04-28 12:51:43,446 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 12:51:43,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031108999] [2022-04-28 12:51:43,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031108999] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 12:51:43,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 12:51:43,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2022-04-28 12:51:43,446 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 12:51:43,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [28498707] [2022-04-28 12:51:43,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [28498707] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:51:43,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:51:43,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-28 12:51:43,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038180215] [2022-04-28 12:51:43,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 12:51:43,447 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-04-28 12:51:43,448 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 12:51:43,448 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 12:51:47,728 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 23 inductive. 0 not inductive. 2 times theorem prover too weak to decide inductivity. [2022-04-28 12:51:47,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-28 12:51:47,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 12:51:47,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-28 12:51:47,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=65, Unknown=3, NotChecked=16, Total=110 [2022-04-28 12:51:47,729 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 12:51:49,953 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-28 12:51:56,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-28 12:51:58,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-28 12:52:00,976 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse10 (* (- 1) c_main_~a~0))) (let ((.cse13 (= c_main_~z~0 0)) (.cse8 (= c_main_~az~0 0)) (.cse14 (+ .cse10 c_main_~x~0))) (let ((.cse12 (= c_main_~y~0 0)) (.cse1 (= (mod .cse14 c_main_~z~0) 0)) (.cse4 (not .cse8)) (.cse0 (= (mod c_main_~y~0 c_main_~z~0) 0)) (.cse11 (div .cse14 c_main_~z~0)) (.cse9 (not .cse13))) (and (or (let ((.cse2 (+ .cse10 .cse11))) (and .cse0 .cse1 (= (mod .cse2 c_main_~z~0) 0) (let ((.cse7 (div .cse2 c_main_~z~0))) (let ((.cse6 (* .cse7 c_main_~z~0)) (.cse5 (div c_main_~y~0 c_main_~z~0))) (or (let ((.cse3 (+ .cse6 (* (- 1) .cse7) c_main_~a~0))) (and (= (mod .cse3 c_main_~az~0) 0) .cse4 (= .cse5 (* (div .cse3 c_main_~az~0) c_main_~z~0)))) (and (= .cse7 (+ .cse6 c_main_~a~0)) .cse8 (= 0 (mod .cse5 c_main_~z~0)))))) .cse9)) (and .cse12 .cse13 (= 0 .cse14))) (or (and (= c_main_~x~0 c_main_~a~0) .cse12 .cse13) (and .cse1 (let ((.cse16 (* .cse11 c_main_~z~0))) (or (let ((.cse15 (+ .cse16 (* (- 1) .cse11) c_main_~a~0))) (and (= (* (div .cse15 c_main_~az~0) c_main_~z~0) c_main_~y~0) .cse4 (= (mod .cse15 c_main_~az~0) 0))) (and .cse0 .cse8 (= (+ .cse16 c_main_~a~0) .cse11)))) .cse9)))))) is different from false [2022-04-28 12:52:07,263 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-28 12:52:10,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:52:10,301 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-04-28 12:52:10,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-28 12:52:10,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-04-28 12:52:10,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 12:52:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 12:52:10,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 27 transitions. [2022-04-28 12:52:10,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 12:52:10,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 27 transitions. [2022-04-28 12:52:10,304 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 27 transitions. [2022-04-28 12:52:14,626 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 25 inductive. 0 not inductive. 2 times theorem prover too weak to decide inductivity. [2022-04-28 12:52:14,627 INFO L225 Difference]: With dead ends: 34 [2022-04-28 12:52:14,627 INFO L226 Difference]: Without dead ends: 0 [2022-04-28 12:52:14,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=35, Invalid=79, Unknown=4, NotChecked=38, Total=156 [2022-04-28 12:52:14,628 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-04-28 12:52:14,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 61 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 4 Unknown, 19 Unchecked, 9.6s Time] [2022-04-28 12:52:14,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-28 12:52:14,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-28 12:52:14,629 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 12:52:14,629 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 12:52:14,629 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 12:52:14,629 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 12:52:14,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:52:14,629 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 12:52:14,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 12:52:14,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:52:14,629 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:52:14,629 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-28 12:52:14,629 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-28 12:52:14,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:52:14,630 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 12:52:14,630 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 12:52:14,630 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:52:14,630 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:52:14,630 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 12:52:14,630 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 12:52:14,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 12:52:14,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-28 12:52:14,630 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2022-04-28 12:52:14,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 12:52:14,630 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-28 12:52:14,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 12:52:14,631 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-28 12:52:14,631 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:52:14,631 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 12:52:14,631 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:52:14,633 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 12:52:14,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-28 12:52:14,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 12:52:14,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-28 12:53:22,453 WARN L232 SmtUtils]: Spent 1.13m on a formula simplification. DAG size of input: 82 DAG size of output: 77 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-28 12:53:54,536 WARN L232 SmtUtils]: Spent 32.07s on a formula simplification. DAG size of input: 56 DAG size of output: 51 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-28 12:55:25,764 WARN L232 SmtUtils]: Spent 1.52m on a formula simplification. DAG size of input: 82 DAG size of output: 77 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-28 12:56:34,401 WARN L232 SmtUtils]: Spent 1.14m on a formula simplification. DAG size of input: 71 DAG size of output: 59 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-28 12:57:18,978 WARN L232 SmtUtils]: Spent 44.53s on a formula simplification. DAG size of input: 56 DAG size of output: 51 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-28 12:57:19,011 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2022-04-28 12:57:19,012 INFO L899 garLoopResultBuilder]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2022-04-28 12:57:19,012 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2022-04-28 12:57:19,012 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 11 13) no Hoare annotation was computed. [2022-04-28 12:57:19,012 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-04-28 12:57:19,012 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2022-04-28 12:57:19,012 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2022-04-28 12:57:19,012 INFO L895 garLoopResultBuilder]: At program point L34-1(lines 34 43) the Hoare annotation is: (let ((.cse12 (* main_~a~0 main_~z~0))) (let ((.cse11 (= .cse12 main_~az~0))) (or (let ((.cse5 (* (- 1) main_~a~0))) (let ((.cse7 (+ .cse5 main_~x~0)) (.cse8 (= main_~az~0 0)) (.cse10 (= main_~z~0 0))) (let ((.cse6 (and .cse10 (= main_~y~0 0) (= main_~a~0 main_~x~0))) (.cse2 (not .cse8)) (.cse4 (div .cse7 main_~z~0))) (and (or (let ((.cse3 (+ .cse4 .cse5))) (and (let ((.cse1 (div .cse3 main_~z~0))) (let ((.cse0 (* main_~z~0 .cse1))) (or (and (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= (+ main_~a~0 .cse0) .cse1)) (and (= 0 (mod (+ (* (- 1) .cse1) main_~a~0 .cse0) main_~az~0)) .cse2)))) (= (mod .cse3 main_~z~0) 0))) .cse6) (or .cse6 (and (= 0 (mod .cse7 main_~z~0)) (or (and (= (mod main_~y~0 main_~z~0) 0) .cse8) (let ((.cse9 (+ (* (- 1) .cse4) main_~a~0 (* .cse4 main_~z~0)))) (and (= (mod .cse9 main_~az~0) 0) .cse2 (= (* (div .cse9 main_~az~0) main_~z~0) main_~y~0)))) (not .cse10))))))) (and (<= ~counter~0 1) (= main_~y~0 1) (<= |main_#t~post7| 0) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0)) .cse11) (not (<= |old(~counter~0)| 0)) (and (<= |main_#t~post7| 1) (= main_~z~0 main_~y~0) (= main_~x~0 (+ .cse12 main_~a~0)) .cse11)))) [2022-04-28 12:57:19,012 INFO L895 garLoopResultBuilder]: At program point L34-3(lines 34 43) the Hoare annotation is: (let ((.cse13 (* main_~a~0 main_~z~0))) (let ((.cse12 (= .cse13 main_~az~0))) (or (let ((.cse5 (* (- 1) main_~a~0))) (let ((.cse7 (+ .cse5 main_~x~0)) (.cse9 (= main_~az~0 0))) (let ((.cse2 (not .cse9)) (.cse4 (div .cse7 main_~z~0)) (.cse6 (= main_~y~0 0))) (and (or (let ((.cse3 (+ .cse4 .cse5))) (and (let ((.cse1 (div .cse3 main_~z~0))) (let ((.cse0 (* main_~z~0 .cse1))) (or (and (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= (+ main_~a~0 .cse0) .cse1)) (and (= 0 (mod (+ (* (- 1) .cse1) main_~a~0 .cse0) main_~az~0)) .cse2)))) (= (mod .cse3 main_~z~0) 0))) .cse6) (let ((.cse11 (= main_~z~0 0))) (or (and (= 0 (mod .cse7 main_~z~0)) (let ((.cse8 (* .cse4 main_~z~0))) (or (and (= (mod main_~y~0 main_~z~0) 0) (= .cse4 (+ main_~a~0 .cse8)) .cse9) (let ((.cse10 (+ (* (- 1) .cse4) main_~a~0 .cse8))) (and (= (mod .cse10 main_~az~0) 0) .cse2 (= (* (div .cse10 main_~az~0) main_~z~0) main_~y~0))))) (not .cse11)) (and .cse11 .cse6 (= main_~a~0 main_~x~0)))))))) (not (<= |old(~counter~0)| 0)) (and (= main_~y~0 1) (<= ~counter~0 0) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0)) .cse12) (and (= main_~z~0 main_~y~0) (<= ~counter~0 1) (= main_~x~0 (+ .cse13 main_~a~0)) .cse12)))) [2022-04-28 12:57:19,012 INFO L895 garLoopResultBuilder]: At program point L34-4(lines 34 43) the Hoare annotation is: (let ((.cse13 (* (- 1) main_~a~0))) (let ((.cse9 (= main_~z~0 0)) (.cse5 (= main_~az~0 0)) (.cse14 (+ .cse13 main_~x~0))) (let ((.cse0 (= main_~a~0 main_~x~0)) (.cse2 (= (mod main_~y~0 main_~z~0) 0)) (.cse1 (= 0 (mod .cse14 main_~z~0))) (.cse7 (not .cse5)) (.cse8 (not .cse9)) (.cse3 (div .cse14 main_~z~0))) (or (and (= main_~y~0 1) .cse0 (= (* main_~a~0 main_~z~0) main_~az~0)) (and .cse1 (let ((.cse4 (* .cse3 main_~z~0))) (or (and .cse2 (= .cse3 (+ main_~a~0 .cse4)) .cse5) (let ((.cse6 (+ (* (- 1) .cse3) main_~a~0 .cse4))) (and (= (mod .cse6 main_~az~0) 0) .cse7 (= (* (div .cse6 main_~az~0) main_~z~0) main_~y~0))))) .cse8) (not (<= |old(~counter~0)| 0)) (and .cse9 (= main_~y~0 0) .cse0) (let ((.cse11 (+ .cse3 .cse13))) (let ((.cse10 (let ((.cse12 (div .cse11 main_~z~0))) (+ (* (- 1) .cse12) main_~a~0 (* main_~z~0 .cse12))))) (and .cse2 (= 0 (mod .cse10 main_~az~0)) .cse1 (= (* main_~z~0 (div .cse10 main_~az~0)) (div main_~y~0 main_~z~0)) .cse7 (= (mod .cse11 main_~z~0) 0) .cse8))))))) [2022-04-28 12:57:19,012 INFO L895 garLoopResultBuilder]: At program point mainENTRY(lines 22 46) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (<= ~counter~0 0)) [2022-04-28 12:57:19,012 INFO L902 garLoopResultBuilder]: At program point mainEXIT(lines 22 46) the Hoare annotation is: true [2022-04-28 12:57:19,013 INFO L902 garLoopResultBuilder]: At program point mainFINAL(lines 22 46) the Hoare annotation is: true [2022-04-28 12:57:19,013 INFO L902 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: true [2022-04-28 12:57:19,013 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse5 (= main_~z~0 0))) (or (let ((.cse0 (+ (* (- 1) main_~a~0) main_~x~0))) (and (= 0 (mod .cse0 main_~z~0)) (let ((.cse1 (div .cse0 main_~z~0))) (let ((.cse3 (= main_~az~0 0)) (.cse2 (* .cse1 main_~z~0))) (or (and (= (mod main_~y~0 main_~z~0) 0) (= .cse1 (+ main_~a~0 .cse2)) .cse3) (let ((.cse4 (+ (* (- 1) .cse1) main_~a~0 .cse2))) (and (= (mod .cse4 main_~az~0) 0) (not .cse3) (= (* (div .cse4 main_~az~0) main_~z~0) main_~y~0)))))) (not .cse5))) (not (<= |old(~counter~0)| 0)) (and .cse5 (= main_~y~0 0) (= main_~a~0 main_~x~0)) (and (<= ~counter~0 1) (= main_~y~0 1) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0)))) [2022-04-28 12:57:19,013 INFO L895 garLoopResultBuilder]: At program point L35-1(lines 34 43) the Hoare annotation is: (let ((.cse5 (= main_~z~0 0))) (or (let ((.cse0 (+ (* (- 1) main_~a~0) main_~x~0))) (and (= 0 (mod .cse0 main_~z~0)) (let ((.cse1 (div .cse0 main_~z~0))) (let ((.cse3 (= main_~az~0 0)) (.cse2 (* .cse1 main_~z~0))) (or (and (= (mod main_~y~0 main_~z~0) 0) (= .cse1 (+ main_~a~0 .cse2)) .cse3) (let ((.cse4 (+ (* (- 1) .cse1) main_~a~0 .cse2))) (and (= (mod .cse4 main_~az~0) 0) (not .cse3) (= (* (div .cse4 main_~az~0) main_~z~0) main_~y~0)))))) (not .cse5))) (not (<= |old(~counter~0)| 0)) (and .cse5 (= main_~y~0 0) (= main_~a~0 main_~x~0)) (and (<= ~counter~0 1) (= main_~y~0 1) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0)))) [2022-04-28 12:57:19,013 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (<= ~counter~0 0) [2022-04-28 12:57:19,013 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2022-04-28 12:57:19,013 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (<= ~counter~0 0) [2022-04-28 12:57:19,013 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-28 12:57:19,013 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (<= ~counter~0 0) [2022-04-28 12:57:19,013 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-28 12:57:19,013 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-28 12:57:19,013 INFO L895 garLoopResultBuilder]: At program point L16(lines 16 17) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-28 12:57:19,013 INFO L895 garLoopResultBuilder]: At program point L15(lines 15 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-28 12:57:19,013 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-04-28 12:57:19,013 INFO L895 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-28 12:57:19,013 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-28 12:57:19,013 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-28 12:57:19,016 INFO L356 BasicCegarLoop]: Path program histogram: [4, 2, 2, 2, 2] [2022-04-28 12:57:19,017 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 12:57:19,020 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 12:57:19,021 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-28 12:57:19,038 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-28 12:57:19,039 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2022-04-28 12:57:19,039 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2022-04-28 12:57:19,072 WARN L170 areAnnotationChecker]: L12-2 has no Hoare annotation [2022-04-28 12:57:21,647 INFO L163 areAnnotationChecker]: CFG has 26 edges. 25 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 12:57:21,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 12:57:21 BoogieIcfgContainer [2022-04-28 12:57:21,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 12:57:21,664 INFO L158 Benchmark]: Toolchain (without parser) took 526027.47ms. Allocated memory was 182.5MB in the beginning and 231.7MB in the end (delta: 49.3MB). Free memory was 125.1MB in the beginning and 113.5MB in the end (delta: 11.6MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. [2022-04-28 12:57:21,665 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 140.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 12:57:21,665 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.81ms. Allocated memory was 182.5MB in the beginning and 231.7MB in the end (delta: 49.3MB). Free memory was 124.9MB in the beginning and 202.9MB in the end (delta: -78.0MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. [2022-04-28 12:57:21,665 INFO L158 Benchmark]: Boogie Preprocessor took 24.29ms. Allocated memory is still 231.7MB. Free memory was 202.9MB in the beginning and 201.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-28 12:57:21,665 INFO L158 Benchmark]: RCFGBuilder took 341.34ms. Allocated memory is still 231.7MB. Free memory was 201.3MB in the beginning and 190.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-28 12:57:21,666 INFO L158 Benchmark]: TraceAbstraction took 525447.03ms. Allocated memory is still 231.7MB. Free memory was 189.8MB in the beginning and 113.5MB in the end (delta: 76.2MB). Peak memory consumption was 77.3MB. Max. memory is 8.0GB. [2022-04-28 12:57:21,667 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 140.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.81ms. Allocated memory was 182.5MB in the beginning and 231.7MB in the end (delta: 49.3MB). Free memory was 124.9MB in the beginning and 202.9MB in the end (delta: -78.0MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.29ms. Allocated memory is still 231.7MB. Free memory was 202.9MB in the beginning and 201.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 341.34ms. Allocated memory is still 231.7MB. Free memory was 201.3MB in the beginning and 190.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 525447.03ms. Allocated memory is still 231.7MB. Free memory was 189.8MB in the beginning and 113.5MB in the end (delta: 76.2MB). Peak memory consumption was 77.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 522.8s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 28.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 304.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 10.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 317 SdHoareTripleChecker+Invalid, 10.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 19 IncrementalHoareTripleChecker+Unchecked, 210 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 134 IncrementalHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 107 mSDtfsCounter, 134 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 134 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 41.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=5, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 82 PreInvPairs, 133 NumberOfFragments, 1075 HoareAnnotationTreeSize, 82 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 22 FomulaSimplificationsInter, 866 FormulaSimplificationTreeSizeReductionInter, 304.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((y / z % z == 0 && a + z * (((-1 * a + x) / z + -1 * a) / z) == ((-1 * a + x) / z + -1 * a) / z) || (0 == (-1 * (((-1 * a + x) / z + -1 * a) / z) + a + z * (((-1 * a + x) / z + -1 * a) / z)) % az && !(az == 0))) && ((-1 * a + x) / z + -1 * a) % z == 0) || y == 0) && (((0 == (-1 * a + x) % z && (((y % z == 0 && (-1 * a + x) / z == a + (-1 * a + x) / z * z) && az == 0) || (((-1 * ((-1 * a + x) / z) + a + (-1 * a + x) / z * z) % az == 0 && !(az == 0)) && (-1 * ((-1 * a + x) / z) + a + (-1 * a + x) / z * z) / az * z == y))) && !(z == 0)) || ((z == 0 && y == 0) && a == x))) || !(\old(counter) <= 0)) || (((y == 1 && counter <= 0) && y * az + x == z * x + a) && a * z == az)) || (((z == y && counter <= 1) && x == a * z + a) && a * z == az) - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == cond || !(1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2022-04-28 12:57:21,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...