/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 03:40:10,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 03:40:10,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 03:40:10,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-05 03:40:10,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-05 03:40:10,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-05 03:40:10,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-05 03:40:10,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-05 03:40:10,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-05 03:40:10,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-05 03:40:10,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-05 03:40:10,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-05 03:40:10,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 03:40:10,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 03:40:10,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 03:40:10,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 03:40:10,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 03:40:10,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 03:40:10,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 03:40:10,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 03:40:10,430 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 03:40:10,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 03:40:10,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 03:40:10,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 03:40:10,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 03:40:10,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 03:40:10,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 03:40:10,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 03:40:10,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 03:40:10,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 03:40:10,458 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 03:40:10,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 03:40:10,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 03:40:10,460 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 03:40:10,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 03:40:10,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 03:40:10,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 03:40:10,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 03:40:10,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 03:40:10,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 03:40:10,461 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 03:40:10,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 03:40:10,461 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 03:40:10,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 03:40:10,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 03:40:10,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 03:40:10,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 03:40:10,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 03:40:10,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 03:40:10,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 03:40:10,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 03:40:10,464 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 03:40:10,464 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 03:40:10,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 03:40:10,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 03:40:10,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 03:40:10,675 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 03:40:10,675 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 03:40:10,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound5.c [2022-04-05 03:40:10,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/541e06cf3/31958b22d1854969b20cc97b3ed0b518/FLAG698fb90a5 [2022-04-05 03:40:11,027 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 03:40:11,028 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound5.c [2022-04-05 03:40:11,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/541e06cf3/31958b22d1854969b20cc97b3ed0b518/FLAG698fb90a5 [2022-04-05 03:40:11,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/541e06cf3/31958b22d1854969b20cc97b3ed0b518 [2022-04-05 03:40:11,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 03:40:11,460 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 03:40:11,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 03:40:11,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 03:40:11,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 03:40:11,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 03:40:11" (1/1) ... [2022-04-05 03:40:11,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30116a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:40:11, skipping insertion in model container [2022-04-05 03:40:11,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 03:40:11" (1/1) ... [2022-04-05 03:40:11,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 03:40:11,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 03:40:11,596 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/prod4br-ll_unwindbound5.c[524,537] [2022-04-05 03:40:11,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 03:40:11,635 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 03:40:11,645 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/prod4br-ll_unwindbound5.c[524,537] [2022-04-05 03:40:11,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 03:40:11,664 INFO L208 MainTranslator]: Completed translation [2022-04-05 03:40:11,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:40:11 WrapperNode [2022-04-05 03:40:11,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 03:40:11,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 03:40:11,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 03:40:11,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 03:40:11,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:40:11" (1/1) ... [2022-04-05 03:40:11,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:40:11" (1/1) ... [2022-04-05 03:40:11,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:40:11" (1/1) ... [2022-04-05 03:40:11,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:40:11" (1/1) ... [2022-04-05 03:40:11,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:40:11" (1/1) ... [2022-04-05 03:40:11,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:40:11" (1/1) ... [2022-04-05 03:40:11,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:40:11" (1/1) ... [2022-04-05 03:40:11,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 03:40:11,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 03:40:11,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 03:40:11,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 03:40:11,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:40:11" (1/1) ... [2022-04-05 03:40:11,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 03:40:11,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:40:11,725 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) [2022-04-05 03:40:11,731 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 [2022-04-05 03:40:11,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 03:40:11,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 03:40:11,754 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 03:40:11,754 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 03:40:11,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 03:40:11,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 03:40:11,754 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 03:40:11,754 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 03:40:11,755 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 03:40:11,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 03:40:11,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 03:40:11,755 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 03:40:11,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 03:40:11,755 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 03:40:11,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 03:40:11,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 03:40:11,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 03:40:11,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 03:40:11,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 03:40:11,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 03:40:11,813 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 03:40:11,815 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 03:40:11,959 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 03:40:11,965 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 03:40:11,965 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-05 03:40:11,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 03:40:11 BoogieIcfgContainer [2022-04-05 03:40:11,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 03:40:11,967 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 03:40:11,967 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 03:40:11,968 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 03:40:11,971 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 03:40:11" (1/1) ... [2022-04-05 03:40:11,972 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 03:40:11,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 03:40:11 BasicIcfg [2022-04-05 03:40:11,991 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 03:40:11,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 03:40:11,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 03:40:11,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 03:40:11,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 03:40:11" (1/4) ... [2022-04-05 03:40:11,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b50693c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 03:40:11, skipping insertion in model container [2022-04-05 03:40:11,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:40:11" (2/4) ... [2022-04-05 03:40:11,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b50693c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 03:40:11, skipping insertion in model container [2022-04-05 03:40:11,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 03:40:11" (3/4) ... [2022-04-05 03:40:11,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b50693c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 03:40:11, skipping insertion in model container [2022-04-05 03:40:11,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 03:40:11" (4/4) ... [2022-04-05 03:40:12,000 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound5.cJordan [2022-04-05 03:40:12,004 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 03:40:12,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 03:40:12,041 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 03:40:12,047 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-05 03:40:12,047 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 03:40:12,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-05 03:40:12,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-05 03:40:12,065 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:40:12,065 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:40:12,066 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:40:12,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:40:12,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1119019339, now seen corresponding path program 1 times [2022-04-05 03:40:12,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:40:12,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954926596] [2022-04-05 03:40:12,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:12,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:40:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:40:12,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 03:40:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:40:12,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 03:40:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:40:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 03:40:12,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:40:12,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954926596] [2022-04-05 03:40:12,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954926596] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 03:40:12,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 03:40:12,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 03:40:12,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481755498] [2022-04-05 03:40:12,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 03:40:12,304 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 03:40:12,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:40:12,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 03:40:12,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 03:40:12,337 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-05 03:40:12,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:40:12,420 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-04-05 03:40:12,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 03:40:12,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-05 03:40:12,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:40:12,439 INFO L225 Difference]: With dead ends: 33 [2022-04-05 03:40:12,439 INFO L226 Difference]: Without dead ends: 28 [2022-04-05 03:40:12,440 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 03:40:12,444 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 03:40:12,445 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 40 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 03:40:12,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-04-05 03:40:12,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-04-05 03:40:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-05 03:40:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-04-05 03:40:12,483 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2022-04-05 03:40:12,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:40:12,484 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-04-05 03:40:12,484 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-05 03:40:12,485 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-04-05 03:40:12,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-05 03:40:12,485 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:40:12,486 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:40:12,486 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 03:40:12,486 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:40:12,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:40:12,488 INFO L85 PathProgramCache]: Analyzing trace with hash -496973861, now seen corresponding path program 1 times [2022-04-05 03:40:12,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:40:12,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419214600] [2022-04-05 03:40:12,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:12,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:40:12,528 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:40:12,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26884965] [2022-04-05 03:40:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:12,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:40:12,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:40:12,531 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) [2022-04-05 03:40:12,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-05 03:40:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:40:12,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-05 03:40:12,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:40:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 03:40:12,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 03:40:12,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:40:12,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419214600] [2022-04-05 03:40:12,681 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:40:12,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26884965] [2022-04-05 03:40:12,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26884965] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 03:40:12,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 03:40:12,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-05 03:40:12,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170391037] [2022-04-05 03:40:12,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 03:40:12,683 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-05 03:40:12,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:40:12,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-05 03:40:12,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 03:40:12,684 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 03:40:12,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:40:12,701 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-04-05 03:40:12,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-05 03:40:12,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-04-05 03:40:12,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:40:12,705 INFO L225 Difference]: With dead ends: 29 [2022-04-05 03:40:12,706 INFO L226 Difference]: Without dead ends: 29 [2022-04-05 03:40:12,706 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 03:40:12,707 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 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 [2022-04-05 03:40:12,708 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 03:40:12,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-04-05 03:40:12,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-04-05 03:40:12,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-05 03:40:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-04-05 03:40:12,720 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 18 [2022-04-05 03:40:12,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:40:12,720 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-04-05 03:40:12,720 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 03:40:12,721 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-04-05 03:40:12,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-05 03:40:12,721 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:40:12,721 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:40:12,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-05 03:40:12,922 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:40:12,922 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:40:12,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:40:12,923 INFO L85 PathProgramCache]: Analyzing trace with hash -495871594, now seen corresponding path program 1 times [2022-04-05 03:40:12,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:40:12,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055132071] [2022-04-05 03:40:12,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:12,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:40:12,935 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:40:12,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075580657] [2022-04-05 03:40:12,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:12,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:40:12,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:40:12,936 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) [2022-04-05 03:40:12,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-05 03:40:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:40:12,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-05 03:40:12,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:40:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 03:40:13,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 03:40:13,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:40:13,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055132071] [2022-04-05 03:40:13,113 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:40:13,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075580657] [2022-04-05 03:40:13,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075580657] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 03:40:13,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 03:40:13,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 03:40:13,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291157408] [2022-04-05 03:40:13,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 03:40:13,115 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 03:40:13,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:40:13,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 03:40:13,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 03:40:13,115 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-05 03:40:13,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:40:13,190 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2022-04-05 03:40:13,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 03:40:13,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-04-05 03:40:13,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:40:13,191 INFO L225 Difference]: With dead ends: 40 [2022-04-05 03:40:13,192 INFO L226 Difference]: Without dead ends: 40 [2022-04-05 03:40:13,192 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-05 03:40:13,193 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 03:40:13,193 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 83 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 03:40:13,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-04-05 03:40:13,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2022-04-05 03:40:13,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-05 03:40:13,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2022-04-05 03:40:13,199 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 18 [2022-04-05 03:40:13,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:40:13,199 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2022-04-05 03:40:13,199 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-05 03:40:13,200 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2022-04-05 03:40:13,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-05 03:40:13,200 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:40:13,200 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:40:13,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-05 03:40:13,411 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-05 03:40:13,412 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:40:13,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:40:13,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1025358414, now seen corresponding path program 1 times [2022-04-05 03:40:13,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:40:13,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989253138] [2022-04-05 03:40:13,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:13,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:40:13,424 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:40:13,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1743204659] [2022-04-05 03:40:13,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:13,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:40:13,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:40:13,426 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) [2022-04-05 03:40:13,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-05 03:40:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:40:13,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-05 03:40:13,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:40:13,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 03:40:13,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 03:40:14,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 03:40:14,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:40:14,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989253138] [2022-04-05 03:40:14,096 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:40:14,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743204659] [2022-04-05 03:40:14,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743204659] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 03:40:14,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 03:40:14,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 15 [2022-04-05 03:40:14,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305076741] [2022-04-05 03:40:14,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 03:40:14,097 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 03:40:14,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:40:14,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 03:40:14,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-04-05 03:40:14,099 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 03:40:14,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:40:14,336 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2022-04-05 03:40:14,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-05 03:40:14,336 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 24 [2022-04-05 03:40:14,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:40:14,338 INFO L225 Difference]: With dead ends: 53 [2022-04-05 03:40:14,338 INFO L226 Difference]: Without dead ends: 53 [2022-04-05 03:40:14,339 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-04-05 03:40:14,340 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 60 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 03:40:14,340 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 122 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 03:40:14,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-04-05 03:40:14,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2022-04-05 03:40:14,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.24) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-05 03:40:14,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2022-04-05 03:40:14,346 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 24 [2022-04-05 03:40:14,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:40:14,347 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2022-04-05 03:40:14,347 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 03:40:14,347 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2022-04-05 03:40:14,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-04-05 03:40:14,348 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:40:14,348 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:40:14,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-05 03:40:14,561 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:40:14,561 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:40:14,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:40:14,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2117889998, now seen corresponding path program 1 times [2022-04-05 03:40:14,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:40:14,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613979895] [2022-04-05 03:40:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:14,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:40:14,573 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:40:14,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175971070] [2022-04-05 03:40:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:14,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:40:14,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:40:14,575 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) [2022-04-05 03:40:14,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-05 03:40:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:40:14,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 03:40:14,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:40:14,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 03:40:14,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 03:40:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 03:40:14,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:40:14,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613979895] [2022-04-05 03:40:14,759 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:40:14,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175971070] [2022-04-05 03:40:14,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175971070] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 03:40:14,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 03:40:14,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-04-05 03:40:14,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917486088] [2022-04-05 03:40:14,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 03:40:14,762 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 03:40:14,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:40:14,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 03:40:14,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-05 03:40:14,762 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-04-05 03:40:14,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:40:14,819 INFO L93 Difference]: Finished difference Result 95 states and 112 transitions. [2022-04-05 03:40:14,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 03:40:14,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 27 [2022-04-05 03:40:14,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:40:14,820 INFO L225 Difference]: With dead ends: 95 [2022-04-05 03:40:14,820 INFO L226 Difference]: Without dead ends: 93 [2022-04-05 03:40:14,821 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-04-05 03:40:14,821 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 64 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 03:40:14,822 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 180 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 03:40:14,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-04-05 03:40:14,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2022-04-05 03:40:14,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.3333333333333333) internal successors, (80), 64 states have internal predecessors, (80), 16 states have call successors, (16), 12 states have call predecessors, (16), 10 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-04-05 03:40:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2022-04-05 03:40:14,831 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 27 [2022-04-05 03:40:14,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:40:14,832 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2022-04-05 03:40:14,832 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-04-05 03:40:14,832 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2022-04-05 03:40:14,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-04-05 03:40:14,833 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:40:14,833 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:40:14,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-05 03:40:15,039 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:40:15,040 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:40:15,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:40:15,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2116787731, now seen corresponding path program 1 times [2022-04-05 03:40:15,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:40:15,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109771515] [2022-04-05 03:40:15,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:15,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:40:15,050 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:40:15,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468618729] [2022-04-05 03:40:15,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:15,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:40:15,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:40:15,052 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) [2022-04-05 03:40:15,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-05 03:40:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:40:15,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 34 conjunts are in the unsatisfiable core [2022-04-05 03:40:15,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:40:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 03:40:17,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 03:40:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 03:40:18,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:40:18,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109771515] [2022-04-05 03:40:18,285 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:40:18,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468618729] [2022-04-05 03:40:18,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468618729] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 03:40:18,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 03:40:18,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 17 [2022-04-05 03:40:18,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979368591] [2022-04-05 03:40:18,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 03:40:18,286 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-05 03:40:18,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:40:18,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-05 03:40:18,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-04-05 03:40:18,287 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-05 03:40:20,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:40:20,332 INFO L93 Difference]: Finished difference Result 125 states and 160 transitions. [2022-04-05 03:40:20,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 03:40:20,333 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 27 [2022-04-05 03:40:20,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:40:20,335 INFO L225 Difference]: With dead ends: 125 [2022-04-05 03:40:20,335 INFO L226 Difference]: Without dead ends: 121 [2022-04-05 03:40:20,336 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-04-05 03:40:20,336 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 84 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-05 03:40:20,337 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 190 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-05 03:40:20,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-04-05 03:40:20,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 79. [2022-04-05 03:40:20,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 59 states have internal predecessors, (75), 12 states have call successors, (12), 11 states have call predecessors, (12), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-05 03:40:20,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2022-04-05 03:40:20,345 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 27 [2022-04-05 03:40:20,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:40:20,345 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2022-04-05 03:40:20,345 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-05 03:40:20,345 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2022-04-05 03:40:20,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-05 03:40:20,346 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:40:20,346 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:40:20,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-05 03:40:20,555 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:40:20,556 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:40:20,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:40:20,556 INFO L85 PathProgramCache]: Analyzing trace with hash -410392694, now seen corresponding path program 1 times [2022-04-05 03:40:20,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:40:20,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114401599] [2022-04-05 03:40:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:20,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:40:20,572 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:40:20,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322756061] [2022-04-05 03:40:20,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:20,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:40:20,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:40:20,576 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) [2022-04-05 03:40:20,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-05 03:40:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:40:20,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-05 03:40:20,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:40:20,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 03:40:20,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 03:40:20,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:40:20,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114401599] [2022-04-05 03:40:20,695 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:40:20,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322756061] [2022-04-05 03:40:20,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322756061] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 03:40:20,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 03:40:20,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 03:40:20,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167080292] [2022-04-05 03:40:20,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 03:40:20,696 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 03:40:20,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:40:20,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 03:40:20,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-04-05 03:40:20,697 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-05 03:40:20,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:40:20,790 INFO L93 Difference]: Finished difference Result 114 states and 148 transitions. [2022-04-05 03:40:20,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 03:40:20,790 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2022-04-05 03:40:20,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:40:20,791 INFO L225 Difference]: With dead ends: 114 [2022-04-05 03:40:20,792 INFO L226 Difference]: Without dead ends: 104 [2022-04-05 03:40:20,792 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-04-05 03:40:20,793 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 33 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 03:40:20,793 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 141 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 03:40:20,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-04-05 03:40:20,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2022-04-05 03:40:20,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 76 states have internal predecessors, (98), 15 states have call successors, (15), 11 states have call predecessors, (15), 9 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 03:40:20,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2022-04-05 03:40:20,809 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 29 [2022-04-05 03:40:20,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:40:20,810 INFO L478 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2022-04-05 03:40:20,810 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-05 03:40:20,810 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2022-04-05 03:40:20,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-05 03:40:20,811 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:40:20,811 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:40:20,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-05 03:40:21,036 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:40:21,036 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:40:21,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:40:21,037 INFO L85 PathProgramCache]: Analyzing trace with hash 159893073, now seen corresponding path program 1 times [2022-04-05 03:40:21,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:40:21,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532913215] [2022-04-05 03:40:21,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:21,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:40:21,048 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:40:21,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193703501] [2022-04-05 03:40:21,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:21,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:40:21,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:40:21,053 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:40:21,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-05 03:40:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:40:21,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-05 03:40:21,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:40:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 03:40:21,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 03:40:21,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:40:21,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532913215] [2022-04-05 03:40:21,184 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:40:21,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193703501] [2022-04-05 03:40:21,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193703501] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 03:40:21,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 03:40:21,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 03:40:21,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577060606] [2022-04-05 03:40:21,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 03:40:21,185 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 03:40:21,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:40:21,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 03:40:21,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-05 03:40:21,185 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-05 03:40:21,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:40:21,233 INFO L93 Difference]: Finished difference Result 139 states and 177 transitions. [2022-04-05 03:40:21,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 03:40:21,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 40 [2022-04-05 03:40:21,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:40:21,235 INFO L225 Difference]: With dead ends: 139 [2022-04-05 03:40:21,235 INFO L226 Difference]: Without dead ends: 129 [2022-04-05 03:40:21,235 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-05 03:40:21,236 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 03:40:21,236 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 116 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 03:40:21,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-04-05 03:40:21,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 113. [2022-04-05 03:40:21,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 87 states have internal predecessors, (110), 18 states have call successors, (18), 11 states have call predecessors, (18), 9 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-05 03:40:21,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 143 transitions. [2022-04-05 03:40:21,245 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 143 transitions. Word has length 40 [2022-04-05 03:40:21,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:40:21,245 INFO L478 AbstractCegarLoop]: Abstraction has 113 states and 143 transitions. [2022-04-05 03:40:21,245 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-05 03:40:21,245 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 143 transitions. [2022-04-05 03:40:21,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-05 03:40:21,246 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:40:21,246 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:40:21,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-04-05 03:40:21,467 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:40:21,468 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:40:21,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:40:21,468 INFO L85 PathProgramCache]: Analyzing trace with hash -837179280, now seen corresponding path program 1 times [2022-04-05 03:40:21,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:40:21,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904569246] [2022-04-05 03:40:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:21,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:40:21,476 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:40:21,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705599184] [2022-04-05 03:40:21,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:21,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:40:21,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:40:21,477 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:40:21,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-05 03:40:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:40:21,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-05 03:40:21,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:40:21,661 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-05 03:40:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 03:40:21,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 03:40:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-05 03:40:21,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:40:21,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904569246] [2022-04-05 03:40:21,779 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:40:21,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705599184] [2022-04-05 03:40:21,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705599184] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 03:40:21,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 03:40:21,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2022-04-05 03:40:21,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442699052] [2022-04-05 03:40:21,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 03:40:21,780 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 03:40:21,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:40:21,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 03:40:21,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-04-05 03:40:21,781 INFO L87 Difference]: Start difference. First operand 113 states and 143 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 03:40:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:40:21,955 INFO L93 Difference]: Finished difference Result 118 states and 146 transitions. [2022-04-05 03:40:21,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 03:40:21,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-04-05 03:40:21,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:40:21,957 INFO L225 Difference]: With dead ends: 118 [2022-04-05 03:40:21,957 INFO L226 Difference]: Without dead ends: 100 [2022-04-05 03:40:21,957 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-04-05 03:40:21,958 INFO L913 BasicCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 03:40:21,958 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 122 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 03:40:21,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-04-05 03:40:21,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 66. [2022-04-05 03:40:21,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 50 states have internal predecessors, (63), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-05 03:40:21,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2022-04-05 03:40:21,963 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 40 [2022-04-05 03:40:21,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:40:21,963 INFO L478 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2022-04-05 03:40:21,964 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 03:40:21,964 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2022-04-05 03:40:21,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-05 03:40:21,965 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:40:21,965 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:40:21,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-05 03:40:22,165 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-04-05 03:40:22,166 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:40:22,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:40:22,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1169624165, now seen corresponding path program 2 times [2022-04-05 03:40:22,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:40:22,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678949190] [2022-04-05 03:40:22,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:22,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:40:22,175 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:40:22,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747885962] [2022-04-05 03:40:22,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 03:40:22,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:40:22,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:40:22,178 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:40:22,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-05 03:40:22,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 03:40:22,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 03:40:22,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-05 03:40:22,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:40:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 03:40:22,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 03:40:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 03:40:22,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:40:22,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678949190] [2022-04-05 03:40:22,455 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:40:22,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747885962] [2022-04-05 03:40:22,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747885962] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 03:40:22,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 03:40:22,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-04-05 03:40:22,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15059942] [2022-04-05 03:40:22,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 03:40:22,456 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 03:40:22,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:40:22,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 03:40:22,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-04-05 03:40:22,457 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 7 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) [2022-04-05 03:40:22,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:40:22,515 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2022-04-05 03:40:22,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 03:40:22,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 7 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) Word has length 54 [2022-04-05 03:40:22,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:40:22,516 INFO L225 Difference]: With dead ends: 77 [2022-04-05 03:40:22,516 INFO L226 Difference]: Without dead ends: 77 [2022-04-05 03:40:22,517 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-04-05 03:40:22,517 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 37 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 03:40:22,518 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 142 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 03:40:22,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-04-05 03:40:22,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-04-05 03:40:22,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 58 states have (on average 1.293103448275862) internal successors, (75), 59 states have internal predecessors, (75), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-05 03:40:22,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2022-04-05 03:40:22,522 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 54 [2022-04-05 03:40:22,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:40:22,522 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2022-04-05 03:40:22,522 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 7 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) [2022-04-05 03:40:22,522 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2022-04-05 03:40:22,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-05 03:40:22,524 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:40:22,524 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:40:22,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-05 03:40:22,739 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-04-05 03:40:22,739 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:40:22,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:40:22,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1678730126, now seen corresponding path program 3 times [2022-04-05 03:40:22,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:40:22,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744358922] [2022-04-05 03:40:22,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:40:22,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:40:22,757 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:40:22,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290930626] [2022-04-05 03:40:22,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 03:40:22,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:40:22,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:40:22,760 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:40:22,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-05 03:40:22,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-04-05 03:40:22,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-04-05 03:40:22,842 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-05 03:40:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-05 03:40:22,939 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-05 03:40:22,939 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-05 03:40:22,940 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 03:40:22,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-04-05 03:40:23,142 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-05 03:40:23,144 INFO L719 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:40:23,147 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 03:40:23,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 03:40:23 BasicIcfg [2022-04-05 03:40:23,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 03:40:23,181 INFO L158 Benchmark]: Toolchain (without parser) took 11721.35ms. Allocated memory was 167.8MB in the beginning and 226.5MB in the end (delta: 58.7MB). Free memory was 116.4MB in the beginning and 84.7MB in the end (delta: 31.8MB). Peak memory consumption was 91.4MB. Max. memory is 8.0GB. [2022-04-05 03:40:23,181 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 167.8MB. Free memory is still 132.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 03:40:23,182 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.66ms. Allocated memory was 167.8MB in the beginning and 226.5MB in the end (delta: 58.7MB). Free memory was 116.2MB in the beginning and 203.2MB in the end (delta: -87.0MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2022-04-05 03:40:23,182 INFO L158 Benchmark]: Boogie Preprocessor took 23.80ms. Allocated memory is still 226.5MB. Free memory was 202.8MB in the beginning and 201.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 03:40:23,182 INFO L158 Benchmark]: RCFGBuilder took 276.57ms. Allocated memory is still 226.5MB. Free memory was 201.4MB in the beginning and 189.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-05 03:40:23,182 INFO L158 Benchmark]: IcfgTransformer took 23.93ms. Allocated memory is still 226.5MB. Free memory was 189.8MB in the beginning and 188.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 03:40:23,182 INFO L158 Benchmark]: TraceAbstraction took 11188.40ms. Allocated memory is still 226.5MB. Free memory was 188.1MB in the beginning and 84.7MB in the end (delta: 103.4MB). Peak memory consumption was 104.3MB. Max. memory is 8.0GB. [2022-04-05 03:40:23,184 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 167.8MB. Free memory is still 132.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 201.66ms. Allocated memory was 167.8MB in the beginning and 226.5MB in the end (delta: 58.7MB). Free memory was 116.2MB in the beginning and 203.2MB in the end (delta: -87.0MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.80ms. Allocated memory is still 226.5MB. Free memory was 202.8MB in the beginning and 201.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 276.57ms. Allocated memory is still 226.5MB. Free memory was 201.4MB in the beginning and 189.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 23.93ms. Allocated memory is still 226.5MB. Free memory was 189.8MB in the beginning and 188.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 11188.40ms. Allocated memory is still 226.5MB. Free memory was 188.1MB in the beginning and 84.7MB in the end (delta: 103.4MB). Peak memory consumption was 104.3MB. 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 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [\old(counter)=10, counter=0] [L21] int x, y; [L22] long long a, b, p, q; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L26] RET assume_abort_if_not(y >= 1) VAL [\old(counter)=0, counter=0, x=32, y=64] [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 VAL [\old(counter)=0, a=32, b=64, counter=0, p=1, q=0, x=32, y=64] [L33] EXPR counter++ VAL [\old(counter)=0, a=32, b=64, counter=1, counter++=0, p=1, q=0, x=32, y=64] [L33] COND TRUE counter++<5 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=32, b=64, counter=1, p=1, q=0, x=32, y=64] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=32, b=64, counter=1, p=1, q=0, x=32, y=64] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=16, b=32, counter=1, p=4, q=0, x=32, y=64] [L33] EXPR counter++ VAL [\old(counter)=0, a=16, b=32, counter=2, counter++=1, p=4, q=0, x=32, y=64] [L33] COND TRUE counter++<5 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=16, b=32, counter=2, p=4, q=0, x=32, y=64] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=16, b=32, counter=2, p=4, q=0, x=32, y=64] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=8, b=16, counter=2, p=16, q=0, x=32, y=64] [L33] EXPR counter++ VAL [\old(counter)=0, a=8, b=16, counter=3, counter++=2, p=16, q=0, x=32, y=64] [L33] COND TRUE counter++<5 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=8, b=16, counter=3, p=16, q=0, x=32, y=64] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=8, b=16, counter=3, p=16, q=0, x=32, y=64] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=4, b=8, counter=3, p=64, q=0, x=32, y=64] [L33] EXPR counter++ VAL [\old(counter)=0, a=4, b=8, counter=4, counter++=3, p=64, q=0, x=32, y=64] [L33] COND TRUE counter++<5 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=4, b=8, counter=4, p=64, q=0, x=32, y=64] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=4, b=8, counter=4, p=64, q=0, x=32, y=64] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=2, b=4, counter=4, p=256, q=0, x=32, y=64] [L33] EXPR counter++ VAL [\old(counter)=0, a=2, b=4, counter=5, counter++=4, p=256, q=0, x=32, y=64] [L33] COND TRUE counter++<5 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=2, b=4, counter=5, p=256, q=0, x=32, y=64] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=2, b=4, counter=5, p=256, q=0, x=32, y=64] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=1, b=2, counter=5, p=1024, q=0, x=32, y=64] [L33] EXPR counter++ VAL [\old(counter)=0, a=1, b=2, counter=6, counter++=5, p=1024, q=0, x=32, y=64] [L33] COND FALSE !(counter++<5) [L56] CALL __VERIFIER_assert(q == (long long) x * y) VAL [\old(cond)=0, \old(counter)=0, counter=6] [L12] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=6] [L14] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.1s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 323 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 309 mSDsluCounter, 1217 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 912 mSDsCounter, 167 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 917 IncrementalHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 167 mSolverCounterUnsat, 305 mSDtfsCounter, 917 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 472 GetRequests, 378 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=8, InterpolantAutomatonStates: 81, 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, 10 MinimizatonAttempts, 124 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 451 ConstructedInterpolants, 0 QuantifiedInterpolants, 1538 SizeOfPredicates, 30 NumberOfNonLiveVariables, 1048 ConjunctsInSsa, 116 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 118/236 InterpolantCoveringCapability, 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 RESULT: Ultimate proved your program to be incorrect! [2022-04-05 03:40:23,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...