/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/egcd2-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 04:35:25,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 04:35:25,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 04:35:25,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 04:35:25,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 04:35:25,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 04:35:25,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 04:35:25,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 04:35:25,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 04:35:25,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 04:35:25,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 04:35:25,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 04:35:25,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 04:35:25,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 04:35:25,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 04:35:25,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 04:35:25,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 04:35:25,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 04:35:25,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 04:35:25,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 04:35:25,815 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 04:35:25,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 04:35:25,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 04:35:25,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 04:35:25,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 04:35:25,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 04:35:25,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 04:35:25,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 04:35:25,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 04:35:25,833 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 04:35:25,847 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 04:35:25,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 04:35:25,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 04:35:25,850 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 04:35:25,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 04:35:25,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 04:35:25,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 04:35:25,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 04:35:25,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 04:35:25,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 04:35:25,852 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 04:35:25,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 04:35:25,852 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 04:35:25,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 04:35:25,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 04:35:25,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 04:35:25,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 04:35:25,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 04:35:25,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 04:35:25,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 04:35:25,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 04:35:25,854 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 04:35:25,854 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 04:35:26,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 04:35:26,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 04:35:26,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 04:35:26,080 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 04:35:26,080 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 04:35:26,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/egcd2-ll.c [2022-03-20 04:35:26,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb32d3361/576afa3ebf434df580cfef63eeed81c4/FLAGd11f6c1b5 [2022-03-20 04:35:26,490 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 04:35:26,491 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/egcd2-ll.c [2022-03-20 04:35:26,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb32d3361/576afa3ebf434df580cfef63eeed81c4/FLAGd11f6c1b5 [2022-03-20 04:35:26,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb32d3361/576afa3ebf434df580cfef63eeed81c4 [2022-03-20 04:35:26,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 04:35:26,897 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 04:35:26,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 04:35:26,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 04:35:26,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 04:35:26,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 04:35:26" (1/1) ... [2022-03-20 04:35:26,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee5643a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:35:26, skipping insertion in model container [2022-03-20 04:35:26,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 04:35:26" (1/1) ... [2022-03-20 04:35:26,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 04:35:26,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 04:35:27,084 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/egcd2-ll.c[490,503] [2022-03-20 04:35:27,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 04:35:27,118 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 04:35:27,136 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/egcd2-ll.c[490,503] [2022-03-20 04:35:27,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 04:35:27,177 INFO L208 MainTranslator]: Completed translation [2022-03-20 04:35:27,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:35:27 WrapperNode [2022-03-20 04:35:27,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 04:35:27,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 04:35:27,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 04:35:27,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 04:35:27,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:35:27" (1/1) ... [2022-03-20 04:35:27,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:35:27" (1/1) ... [2022-03-20 04:35:27,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:35:27" (1/1) ... [2022-03-20 04:35:27,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:35:27" (1/1) ... [2022-03-20 04:35:27,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:35:27" (1/1) ... [2022-03-20 04:35:27,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:35:27" (1/1) ... [2022-03-20 04:35:27,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:35:27" (1/1) ... [2022-03-20 04:35:27,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 04:35:27,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 04:35:27,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 04:35:27,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 04:35:27,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:35:27" (1/1) ... [2022-03-20 04:35:27,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 04:35:27,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:35:27,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 04:35:27,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 04:35:27,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 04:35:27,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 04:35:27,301 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 04:35:27,302 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 04:35:27,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 04:35:27,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 04:35:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 04:35:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 04:35:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 04:35:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 04:35:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 04:35:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 04:35:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 04:35:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 04:35:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 04:35:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 04:35:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 04:35:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 04:35:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 04:35:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 04:35:27,350 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 04:35:27,352 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 04:35:27,504 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 04:35:27,509 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 04:35:27,509 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-20 04:35:27,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 04:35:27 BoogieIcfgContainer [2022-03-20 04:35:27,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 04:35:27,528 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 04:35:27,528 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 04:35:27,533 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 04:35:27,535 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 04:35:27" (1/1) ... [2022-03-20 04:35:27,537 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 04:35:27,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 04:35:27 BasicIcfg [2022-03-20 04:35:27,560 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 04:35:27,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 04:35:27,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 04:35:27,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 04:35:27,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 04:35:26" (1/4) ... [2022-03-20 04:35:27,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bb0fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 04:35:27, skipping insertion in model container [2022-03-20 04:35:27,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:35:27" (2/4) ... [2022-03-20 04:35:27,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bb0fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 04:35:27, skipping insertion in model container [2022-03-20 04:35:27,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 04:35:27" (3/4) ... [2022-03-20 04:35:27,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bb0fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 04:35:27, skipping insertion in model container [2022-03-20 04:35:27,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 04:35:27" (4/4) ... [2022-03-20 04:35:27,571 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll.cJordan [2022-03-20 04:35:27,575 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 04:35:27,575 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 04:35:27,612 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 04:35:27,618 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 04:35:27,619 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 04:35:27,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-20 04:35:27,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-20 04:35:27,639 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:35:27,639 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:35:27,640 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:35:27,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:35:27,645 INFO L85 PathProgramCache]: Analyzing trace with hash -876857705, now seen corresponding path program 1 times [2022-03-20 04:35:27,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:35:27,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495040953] [2022-03-20 04:35:27,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:27,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:35:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:35:27,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 04:35:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:35:27,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 04:35:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:35:27,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 04:35:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:35:27,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 04:35:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:35:27,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 04:35:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:35:27,904 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 04:35:27,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:35:27,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495040953] [2022-03-20 04:35:27,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495040953] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 04:35:27,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 04:35:27,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 04:35:27,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904639561] [2022-03-20 04:35:27,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 04:35:27,913 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 04:35:27,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:35:27,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 04:35:27,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 04:35:27,945 INFO L87 Difference]: Start difference. First operand has 37 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 04:35:28,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:35:28,029 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-03-20 04:35:28,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 04:35:28,032 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2022-03-20 04:35:28,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:35:28,038 INFO L225 Difference]: With dead ends: 37 [2022-03-20 04:35:28,039 INFO L226 Difference]: Without dead ends: 32 [2022-03-20 04:35:28,040 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 04:35:28,044 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 19 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 04:35:28,045 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 39 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 04:35:28,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-03-20 04:35:28,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-03-20 04:35:28,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 04:35:28,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-03-20 04:35:28,086 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 32 [2022-03-20 04:35:28,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:35:28,086 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-03-20 04:35:28,087 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 04:35:28,087 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-03-20 04:35:28,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-20 04:35:28,089 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:35:28,089 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:35:28,090 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 04:35:28,090 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:35:28,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:35:28,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1858806609, now seen corresponding path program 1 times [2022-03-20 04:35:28,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:35:28,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810218055] [2022-03-20 04:35:28,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:28,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:35:28,115 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:35:28,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350514696] [2022-03-20 04:35:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:28,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:35:28,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:35:28,117 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:35:28,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 04:35:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:35:28,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 04:35:28,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:35:28,347 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-20 04:35:28,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:35:28,451 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-20 04:35:28,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:35:28,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810218055] [2022-03-20 04:35:28,452 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:35:28,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350514696] [2022-03-20 04:35:28,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350514696] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:35:28,452 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 04:35:28,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-03-20 04:35:28,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324389279] [2022-03-20 04:35:28,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 04:35:28,454 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 04:35:28,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:35:28,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 04:35:28,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-20 04:35:28,455 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 04:35:28,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:35:28,510 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2022-03-20 04:35:28,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 04:35:28,512 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-03-20 04:35:28,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:35:28,513 INFO L225 Difference]: With dead ends: 41 [2022-03-20 04:35:28,513 INFO L226 Difference]: Without dead ends: 41 [2022-03-20 04:35:28,513 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-20 04:35:28,514 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 19 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 04:35:28,515 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 144 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 04:35:28,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-03-20 04:35:28,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2022-03-20 04:35:28,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 04:35:28,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2022-03-20 04:35:28,527 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 33 [2022-03-20 04:35:28,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:35:28,528 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2022-03-20 04:35:28,528 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 04:35:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2022-03-20 04:35:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-20 04:35:28,530 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:35:28,530 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:35:28,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 04:35:28,736 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 [2022-03-20 04:35:28,737 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:35:28,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:35:28,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1753102734, now seen corresponding path program 1 times [2022-03-20 04:35:28,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:35:28,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751007448] [2022-03-20 04:35:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:28,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:35:28,749 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:35:28,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427128053] [2022-03-20 04:35:28,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:28,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:35:28,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:35:28,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:35:28,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 04:35:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:35:28,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-20 04:35:28,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:35:28,960 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-20 04:35:28,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:35:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 04:35:29,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:35:29,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751007448] [2022-03-20 04:35:29,088 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:35:29,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427128053] [2022-03-20 04:35:29,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427128053] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 04:35:29,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 04:35:29,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-03-20 04:35:29,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462083058] [2022-03-20 04:35:29,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 04:35:29,090 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 04:35:29,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:35:29,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 04:35:29,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-03-20 04:35:29,092 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 04:35:29,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:35:29,133 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-03-20 04:35:29,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 04:35:29,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2022-03-20 04:35:29,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:35:29,134 INFO L225 Difference]: With dead ends: 38 [2022-03-20 04:35:29,135 INFO L226 Difference]: Without dead ends: 38 [2022-03-20 04:35:29,135 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-20 04:35:29,136 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 04:35:29,136 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 126 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 04:35:29,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-03-20 04:35:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-03-20 04:35:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 04:35:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-03-20 04:35:29,140 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 34 [2022-03-20 04:35:29,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:35:29,141 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-03-20 04:35:29,141 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 04:35:29,141 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-03-20 04:35:29,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-20 04:35:29,142 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:35:29,142 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:35:29,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 04:35:29,363 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 [2022-03-20 04:35:29,363 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:35:29,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:35:29,364 INFO L85 PathProgramCache]: Analyzing trace with hash -742626026, now seen corresponding path program 1 times [2022-03-20 04:35:29,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:35:29,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966715453] [2022-03-20 04:35:29,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:29,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:35:29,374 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:35:29,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613779177] [2022-03-20 04:35:29,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:29,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:35:29,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:35:29,377 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:35:29,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 04:35:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:35:29,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 04:35:29,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:35:29,574 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 04:35:29,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 04:35:29,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:35:29,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966715453] [2022-03-20 04:35:29,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:35:29,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613779177] [2022-03-20 04:35:29,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613779177] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 04:35:29,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 04:35:29,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 04:35:29,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489401762] [2022-03-20 04:35:29,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 04:35:29,576 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 04:35:29,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:35:29,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 04:35:29,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 04:35:29,577 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 04:35:29,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:35:29,628 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2022-03-20 04:35:29,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 04:35:29,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2022-03-20 04:35:29,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:35:29,631 INFO L225 Difference]: With dead ends: 49 [2022-03-20 04:35:29,631 INFO L226 Difference]: Without dead ends: 49 [2022-03-20 04:35:29,632 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 04:35:29,636 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 04:35:29,641 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 153 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 04:35:29,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-03-20 04:35:29,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2022-03-20 04:35:29,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-20 04:35:29,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2022-03-20 04:35:29,659 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 39 [2022-03-20 04:35:29,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:35:29,659 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2022-03-20 04:35:29,659 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 04:35:29,659 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2022-03-20 04:35:29,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-20 04:35:29,660 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:35:29,660 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1] [2022-03-20 04:35:29,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 04:35:29,869 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 [2022-03-20 04:35:29,872 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:35:29,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:35:29,872 INFO L85 PathProgramCache]: Analyzing trace with hash -2010982190, now seen corresponding path program 1 times [2022-03-20 04:35:29,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:35:29,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978692760] [2022-03-20 04:35:29,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:29,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:35:29,883 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:35:29,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378680565] [2022-03-20 04:35:29,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:29,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:35:29,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:35:29,885 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:35:29,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 04:35:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:35:29,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-20 04:35:29,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:35:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-03-20 04:35:30,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:35:30,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:35:30,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978692760] [2022-03-20 04:35:30,157 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:35:30,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378680565] [2022-03-20 04:35:30,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378680565] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 04:35:30,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-20 04:35:30,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-03-20 04:35:30,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834555356] [2022-03-20 04:35:30,158 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-20 04:35:30,158 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 04:35:30,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:35:30,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 04:35:30,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-20 04:35:30,160 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 04:35:30,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:35:30,255 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2022-03-20 04:35:30,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 04:35:30,256 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2022-03-20 04:35:30,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:35:30,259 INFO L225 Difference]: With dead ends: 53 [2022-03-20 04:35:30,259 INFO L226 Difference]: Without dead ends: 53 [2022-03-20 04:35:30,259 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-20 04:35:30,260 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 22 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 04:35:30,260 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 176 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 04:35:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-03-20 04:35:30,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2022-03-20 04:35:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-20 04:35:30,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2022-03-20 04:35:30,278 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 44 [2022-03-20 04:35:30,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:35:30,278 INFO L478 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2022-03-20 04:35:30,279 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 04:35:30,280 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2022-03-20 04:35:30,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-20 04:35:30,282 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:35:30,282 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:35:30,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-20 04:35:30,501 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 [2022-03-20 04:35:30,501 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:35:30,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:35:30,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2061823606, now seen corresponding path program 1 times [2022-03-20 04:35:30,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:35:30,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105982433] [2022-03-20 04:35:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:30,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:35:30,510 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:35:30,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489078687] [2022-03-20 04:35:30,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:30,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:35:30,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:35:30,516 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:35:30,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 04:35:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:35:30,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-20 04:35:30,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:35:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-20 04:35:30,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:35:30,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:35:30,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105982433] [2022-03-20 04:35:30,840 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:35:30,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489078687] [2022-03-20 04:35:30,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489078687] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 04:35:30,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-20 04:35:30,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-03-20 04:35:30,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647902897] [2022-03-20 04:35:30,841 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-20 04:35:30,843 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 04:35:30,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:35:30,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 04:35:30,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-20 04:35:30,845 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 04:35:30,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:35:30,962 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2022-03-20 04:35:30,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 04:35:30,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2022-03-20 04:35:30,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:35:30,963 INFO L225 Difference]: With dead ends: 57 [2022-03-20 04:35:30,963 INFO L226 Difference]: Without dead ends: 57 [2022-03-20 04:35:30,964 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-20 04:35:30,964 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 12 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 04:35:30,964 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 130 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 04:35:30,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-03-20 04:35:30,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2022-03-20 04:35:30,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-20 04:35:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2022-03-20 04:35:30,968 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 49 [2022-03-20 04:35:30,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:35:30,968 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2022-03-20 04:35:30,968 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 04:35:30,968 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2022-03-20 04:35:30,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-20 04:35:30,969 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:35:30,969 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:35:30,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-20 04:35:31,179 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 [2022-03-20 04:35:31,180 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:35:31,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:35:31,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1928289951, now seen corresponding path program 1 times [2022-03-20 04:35:31,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:35:31,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570076638] [2022-03-20 04:35:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:31,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:35:31,188 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:35:31,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1753217504] [2022-03-20 04:35:31,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:31,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:35:31,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:35:31,190 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) [2022-03-20 04:35:31,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-20 04:35:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:35:31,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 04:35:31,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:35:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-03-20 04:35:31,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:35:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-03-20 04:35:31,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:35:31,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570076638] [2022-03-20 04:35:31,460 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:35:31,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753217504] [2022-03-20 04:35:31,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753217504] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:35:31,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 04:35:31,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-03-20 04:35:31,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357904502] [2022-03-20 04:35:31,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 04:35:31,461 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 04:35:31,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:35:31,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 04:35:31,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-20 04:35:31,462 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-03-20 04:35:31,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:35:31,593 INFO L93 Difference]: Finished difference Result 95 states and 132 transitions. [2022-03-20 04:35:31,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 04:35:31,593 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 58 [2022-03-20 04:35:31,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:35:31,599 INFO L225 Difference]: With dead ends: 95 [2022-03-20 04:35:31,599 INFO L226 Difference]: Without dead ends: 95 [2022-03-20 04:35:31,599 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-03-20 04:35:31,600 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 30 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 04:35:31,600 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 367 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 04:35:31,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-03-20 04:35:31,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 86. [2022-03-20 04:35:31,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 32 states have call successors, (32), 8 states have call predecessors, (32), 7 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-03-20 04:35:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 117 transitions. [2022-03-20 04:35:31,618 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 117 transitions. Word has length 58 [2022-03-20 04:35:31,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:35:31,619 INFO L478 AbstractCegarLoop]: Abstraction has 86 states and 117 transitions. [2022-03-20 04:35:31,619 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-03-20 04:35:31,619 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 117 transitions. [2022-03-20 04:35:31,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-20 04:35:31,620 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:35:31,620 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 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, 1, 1] [2022-03-20 04:35:31,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-20 04:35:31,838 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 [2022-03-20 04:35:31,840 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:35:31,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:35:31,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1649820922, now seen corresponding path program 1 times [2022-03-20 04:35:31,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:35:31,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89609638] [2022-03-20 04:35:31,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:31,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:35:31,857 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:35:31,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919441413] [2022-03-20 04:35:31,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:31,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:35:31,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:35:31,860 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) [2022-03-20 04:35:31,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-20 04:35:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:35:31,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-20 04:35:31,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:35:32,112 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-03-20 04:35:32,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:35:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-03-20 04:35:32,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:35:32,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89609638] [2022-03-20 04:35:32,256 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:35:32,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919441413] [2022-03-20 04:35:32,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919441413] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:35:32,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 04:35:32,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-03-20 04:35:32,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737461349] [2022-03-20 04:35:32,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 04:35:32,258 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 04:35:32,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:35:32,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 04:35:32,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-20 04:35:32,259 INFO L87 Difference]: Start difference. First operand 86 states and 117 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 6 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-03-20 04:35:32,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:35:32,527 INFO L93 Difference]: Finished difference Result 127 states and 180 transitions. [2022-03-20 04:35:32,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 04:35:32,528 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 6 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 64 [2022-03-20 04:35:32,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:35:32,529 INFO L225 Difference]: With dead ends: 127 [2022-03-20 04:35:32,530 INFO L226 Difference]: Without dead ends: 125 [2022-03-20 04:35:32,530 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-03-20 04:35:32,530 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 29 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 04:35:32,530 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 347 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 04:35:32,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-03-20 04:35:32,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 93. [2022-03-20 04:35:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 50 states have (on average 1.18) internal successors, (59), 52 states have internal predecessors, (59), 34 states have call successors, (34), 9 states have call predecessors, (34), 8 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-03-20 04:35:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 125 transitions. [2022-03-20 04:35:32,537 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 125 transitions. Word has length 64 [2022-03-20 04:35:32,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:35:32,537 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 125 transitions. [2022-03-20 04:35:32,537 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 6 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-03-20 04:35:32,537 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 125 transitions. [2022-03-20 04:35:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 04:35:32,538 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:35:32,538 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 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] [2022-03-20 04:35:32,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-20 04:35:32,751 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 [2022-03-20 04:35:32,751 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:35:32,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:35:32,752 INFO L85 PathProgramCache]: Analyzing trace with hash -385302302, now seen corresponding path program 2 times [2022-03-20 04:35:32,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:35:32,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304207160] [2022-03-20 04:35:32,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:32,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:35:32,760 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:35:32,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113653702] [2022-03-20 04:35:32,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 04:35:32,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:35:32,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:35:32,763 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) [2022-03-20 04:35:32,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-20 04:35:32,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 04:35:32,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 04:35:32,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-20 04:35:32,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:35:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-20 04:35:33,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:35:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-20 04:35:33,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:35:33,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304207160] [2022-03-20 04:35:33,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:35:33,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113653702] [2022-03-20 04:35:33,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113653702] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:35:33,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 04:35:33,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2022-03-20 04:35:33,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890113409] [2022-03-20 04:35:33,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 04:35:33,383 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 04:35:33,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:35:33,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 04:35:33,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-03-20 04:35:33,384 INFO L87 Difference]: Start difference. First operand 93 states and 125 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 13 states have internal predecessors, (33), 8 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2022-03-20 04:35:37,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:35:37,797 INFO L93 Difference]: Finished difference Result 227 states and 333 transitions. [2022-03-20 04:35:37,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-20 04:35:37,797 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 13 states have internal predecessors, (33), 8 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) Word has length 69 [2022-03-20 04:35:37,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:35:37,799 INFO L225 Difference]: With dead ends: 227 [2022-03-20 04:35:37,800 INFO L226 Difference]: Without dead ends: 227 [2022-03-20 04:35:37,800 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=225, Invalid=767, Unknown=0, NotChecked=0, Total=992 [2022-03-20 04:35:37,801 INFO L913 BasicCegarLoop]: 58 mSDtfsCounter, 96 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-20 04:35:37,801 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 379 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-20 04:35:37,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-03-20 04:35:37,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 178. [2022-03-20 04:35:37,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 100 states have internal predecessors, (118), 69 states have call successors, (69), 12 states have call predecessors, (69), 11 states have return successors, (67), 65 states have call predecessors, (67), 67 states have call successors, (67) [2022-03-20 04:35:37,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 254 transitions. [2022-03-20 04:35:37,820 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 254 transitions. Word has length 69 [2022-03-20 04:35:37,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:35:37,820 INFO L478 AbstractCegarLoop]: Abstraction has 178 states and 254 transitions. [2022-03-20 04:35:37,820 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 13 states have internal predecessors, (33), 8 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2022-03-20 04:35:37,820 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 254 transitions. [2022-03-20 04:35:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-20 04:35:37,821 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:35:37,821 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:35:37,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-20 04:35:38,022 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 [2022-03-20 04:35:38,023 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:35:38,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:35:38,023 INFO L85 PathProgramCache]: Analyzing trace with hash -524447642, now seen corresponding path program 3 times [2022-03-20 04:35:38,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:35:38,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485310683] [2022-03-20 04:35:38,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:38,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:35:38,030 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:35:38,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688315529] [2022-03-20 04:35:38,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 04:35:38,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:35:38,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:35:38,034 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) [2022-03-20 04:35:38,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-20 04:35:38,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-20 04:35:38,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 04:35:38,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-20 04:35:38,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:35:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 31 proven. 8 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-03-20 04:35:38,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:35:38,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:35:38,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485310683] [2022-03-20 04:35:38,575 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:35:38,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688315529] [2022-03-20 04:35:38,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688315529] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 04:35:38,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-20 04:35:38,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-03-20 04:35:38,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412583476] [2022-03-20 04:35:38,576 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-20 04:35:38,576 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 04:35:38,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:35:38,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 04:35:38,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-20 04:35:38,577 INFO L87 Difference]: Start difference. First operand 178 states and 254 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-20 04:35:38,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:35:38,841 INFO L93 Difference]: Finished difference Result 208 states and 291 transitions. [2022-03-20 04:35:38,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 04:35:38,842 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 74 [2022-03-20 04:35:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:35:38,844 INFO L225 Difference]: With dead ends: 208 [2022-03-20 04:35:38,844 INFO L226 Difference]: Without dead ends: 208 [2022-03-20 04:35:38,844 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-03-20 04:35:38,845 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 22 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 04:35:38,845 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 247 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 04:35:38,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-03-20 04:35:38,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 205. [2022-03-20 04:35:38,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 113 states have (on average 1.2035398230088497) internal successors, (136), 116 states have internal predecessors, (136), 77 states have call successors, (77), 15 states have call predecessors, (77), 14 states have return successors, (75), 73 states have call predecessors, (75), 75 states have call successors, (75) [2022-03-20 04:35:38,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 288 transitions. [2022-03-20 04:35:38,854 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 288 transitions. Word has length 74 [2022-03-20 04:35:38,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:35:38,855 INFO L478 AbstractCegarLoop]: Abstraction has 205 states and 288 transitions. [2022-03-20 04:35:38,855 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-20 04:35:38,855 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 288 transitions. [2022-03-20 04:35:38,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-20 04:35:38,855 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:35:38,856 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 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, 1] [2022-03-20 04:35:38,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-20 04:35:39,056 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 [2022-03-20 04:35:39,056 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:35:39,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:35:39,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1568721063, now seen corresponding path program 1 times [2022-03-20 04:35:39,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:35:39,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190203683] [2022-03-20 04:35:39,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:39,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:35:39,066 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:35:39,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127829641] [2022-03-20 04:35:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:39,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:35:39,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:35:39,076 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) [2022-03-20 04:35:39,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-20 04:35:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:35:39,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-20 04:35:39,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:35:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-03-20 04:35:39,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:35:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-03-20 04:35:40,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:35:40,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190203683] [2022-03-20 04:35:40,270 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:35:40,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127829641] [2022-03-20 04:35:40,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127829641] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:35:40,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 04:35:40,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-03-20 04:35:40,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748474567] [2022-03-20 04:35:40,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 04:35:40,270 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 04:35:40,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:35:40,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 04:35:40,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-20 04:35:40,271 INFO L87 Difference]: Start difference. First operand 205 states and 288 transitions. Second operand has 19 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-03-20 04:35:42,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:35:42,450 INFO L93 Difference]: Finished difference Result 305 states and 438 transitions. [2022-03-20 04:35:42,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-20 04:35:42,451 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 80 [2022-03-20 04:35:42,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:35:42,453 INFO L225 Difference]: With dead ends: 305 [2022-03-20 04:35:42,453 INFO L226 Difference]: Without dead ends: 298 [2022-03-20 04:35:42,454 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=222, Invalid=1038, Unknown=0, NotChecked=0, Total=1260 [2022-03-20 04:35:42,454 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 63 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-20 04:35:42,454 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 340 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-20 04:35:42,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-03-20 04:35:42,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 295. [2022-03-20 04:35:42,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 164 states have (on average 1.2073170731707317) internal successors, (198), 167 states have internal predecessors, (198), 113 states have call successors, (113), 18 states have call predecessors, (113), 17 states have return successors, (111), 109 states have call predecessors, (111), 111 states have call successors, (111) [2022-03-20 04:35:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 422 transitions. [2022-03-20 04:35:42,470 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 422 transitions. Word has length 80 [2022-03-20 04:35:42,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:35:42,470 INFO L478 AbstractCegarLoop]: Abstraction has 295 states and 422 transitions. [2022-03-20 04:35:42,470 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-03-20 04:35:42,470 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 422 transitions. [2022-03-20 04:35:42,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-20 04:35:42,471 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:35:42,471 INFO L499 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:35:42,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-20 04:35:42,687 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 [2022-03-20 04:35:42,687 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:35:42,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:35:42,688 INFO L85 PathProgramCache]: Analyzing trace with hash 17347872, now seen corresponding path program 1 times [2022-03-20 04:35:42,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:35:42,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857027219] [2022-03-20 04:35:42,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:42,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:35:42,699 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:35:42,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433262036] [2022-03-20 04:35:42,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:35:42,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:35:42,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:35:42,701 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:35:42,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-20 04:35:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:35:42,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 54 conjunts are in the unsatisfiable core [2022-03-20 04:35:42,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:35:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 55 proven. 57 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-03-20 04:35:43,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:35:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 55 proven. 57 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-03-20 04:35:50,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:35:50,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857027219] [2022-03-20 04:35:50,776 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:35:50,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433262036] [2022-03-20 04:35:50,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433262036] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:35:50,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 04:35:50,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 19 [2022-03-20 04:35:50,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572241748] [2022-03-20 04:35:50,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 04:35:50,777 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 04:35:50,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:35:50,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 04:35:50,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-03-20 04:35:50,778 INFO L87 Difference]: Start difference. First operand 295 states and 422 transitions. Second operand has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 16 states have internal predecessors, (39), 13 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) [2022-03-20 04:35:59,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:36:08,118 WARN L232 SmtUtils]: Spent 7.80s on a formula simplification that was a NOOP. DAG size: 90 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 04:36:17,599 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:36:19,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:36:21,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:36:23,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:36:25,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:36:27,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:36:29,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:36:33,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:36:35,585 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:36:37,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:36:40,328 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:36:42,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:36:43,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:36:49,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:36:49,729 INFO L93 Difference]: Finished difference Result 341 states and 493 transitions. [2022-03-20 04:36:49,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-20 04:36:49,730 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 16 states have internal predecessors, (39), 13 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) Word has length 96 [2022-03-20 04:36:49,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:36:49,732 INFO L225 Difference]: With dead ends: 341 [2022-03-20 04:36:49,732 INFO L226 Difference]: Without dead ends: 341 [2022-03-20 04:36:49,732 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 172 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=226, Invalid=701, Unknown=3, NotChecked=0, Total=930 [2022-03-20 04:36:49,732 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 71 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 126 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.8s IncrementalHoareTripleChecker+Time [2022-03-20 04:36:49,733 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 400 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 574 Invalid, 13 Unknown, 0 Unchecked, 35.8s Time] [2022-03-20 04:36:49,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-03-20 04:36:49,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 336. [2022-03-20 04:36:49,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 183 states have (on average 1.2131147540983607) internal successors, (222), 189 states have internal predecessors, (222), 134 states have call successors, (134), 19 states have call predecessors, (134), 18 states have return successors, (132), 127 states have call predecessors, (132), 132 states have call successors, (132) [2022-03-20 04:36:49,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 488 transitions. [2022-03-20 04:36:49,749 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 488 transitions. Word has length 96 [2022-03-20 04:36:49,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:36:49,750 INFO L478 AbstractCegarLoop]: Abstraction has 336 states and 488 transitions. [2022-03-20 04:36:49,750 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 16 states have internal predecessors, (39), 13 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) [2022-03-20 04:36:49,750 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 488 transitions. [2022-03-20 04:36:49,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-20 04:36:49,751 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:36:49,751 INFO L499 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:36:49,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-20 04:36:49,963 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-20 04:36:49,963 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:36:49,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:36:49,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1494614922, now seen corresponding path program 4 times [2022-03-20 04:36:49,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:36:49,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445387850] [2022-03-20 04:36:49,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:36:49,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:36:49,970 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:36:49,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785905244] [2022-03-20 04:36:49,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 04:36:49,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:36:49,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:36:49,979 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:36:49,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-20 04:36:50,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 04:36:50,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 04:36:50,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 04:36:50,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:36:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-03-20 04:36:50,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 04:36:50,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:36:50,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445387850] [2022-03-20 04:36:50,167 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:36:50,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785905244] [2022-03-20 04:36:50,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785905244] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 04:36:50,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 04:36:50,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 04:36:50,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596939818] [2022-03-20 04:36:50,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 04:36:50,168 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 04:36:50,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:36:50,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 04:36:50,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 04:36:50,169 INFO L87 Difference]: Start difference. First operand 336 states and 488 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-03-20 04:36:50,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:36:50,217 INFO L93 Difference]: Finished difference Result 239 states and 323 transitions. [2022-03-20 04:36:50,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 04:36:50,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 99 [2022-03-20 04:36:50,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:36:50,220 INFO L225 Difference]: With dead ends: 239 [2022-03-20 04:36:50,220 INFO L226 Difference]: Without dead ends: 239 [2022-03-20 04:36:50,220 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-20 04:36:50,221 INFO L913 BasicCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 04:36:50,221 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 163 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 04:36:50,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-03-20 04:36:50,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 215. [2022-03-20 04:36:50,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 117 states have (on average 1.1367521367521367) internal successors, (133), 119 states have internal predecessors, (133), 79 states have call successors, (79), 19 states have call predecessors, (79), 18 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2022-03-20 04:36:50,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 289 transitions. [2022-03-20 04:36:50,231 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 289 transitions. Word has length 99 [2022-03-20 04:36:50,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:36:50,232 INFO L478 AbstractCegarLoop]: Abstraction has 215 states and 289 transitions. [2022-03-20 04:36:50,232 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-03-20 04:36:50,232 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 289 transitions. [2022-03-20 04:36:50,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-20 04:36:50,233 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:36:50,234 INFO L499 BasicCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:36:50,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-20 04:36:50,439 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-20 04:36:50,440 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:36:50,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:36:50,440 INFO L85 PathProgramCache]: Analyzing trace with hash -527743528, now seen corresponding path program 2 times [2022-03-20 04:36:50,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:36:50,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806803345] [2022-03-20 04:36:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:36:50,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:36:50,446 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:36:50,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912078952] [2022-03-20 04:36:50,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 04:36:50,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:36:50,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:36:50,450 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:36:50,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-20 04:36:50,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 04:36:50,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 04:36:50,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 76 conjunts are in the unsatisfiable core [2022-03-20 04:36:50,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:36:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 83 proven. 117 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-03-20 04:36:51,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:36:51,632 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 04:36:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 120 proven. 32 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-03-20 04:36:51,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:36:51,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806803345] [2022-03-20 04:36:51,821 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:36:51,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912078952] [2022-03-20 04:36:51,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912078952] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:36:51,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 04:36:51,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 21 [2022-03-20 04:36:51,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850562066] [2022-03-20 04:36:51,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 04:36:51,822 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-20 04:36:51,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:36:51,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-20 04:36:51,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2022-03-20 04:36:51,823 INFO L87 Difference]: Start difference. First operand 215 states and 289 transitions. Second operand has 21 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 16 states have internal predecessors, (45), 14 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 13 states have call predecessors, (31), 14 states have call successors, (31) [2022-03-20 04:36:53,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:36:53,655 INFO L93 Difference]: Finished difference Result 244 states and 324 transitions. [2022-03-20 04:36:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 04:36:53,655 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 16 states have internal predecessors, (45), 14 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 13 states have call predecessors, (31), 14 states have call successors, (31) Word has length 116 [2022-03-20 04:36:53,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:36:53,657 INFO L225 Difference]: With dead ends: 244 [2022-03-20 04:36:53,657 INFO L226 Difference]: Without dead ends: 244 [2022-03-20 04:36:53,657 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2022-03-20 04:36:53,658 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 42 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-20 04:36:53,658 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 419 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-20 04:36:53,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-03-20 04:36:53,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 227. [2022-03-20 04:36:53,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 126 states have (on average 1.126984126984127) internal successors, (142), 128 states have internal predecessors, (142), 79 states have call successors, (79), 22 states have call predecessors, (79), 21 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2022-03-20 04:36:53,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 298 transitions. [2022-03-20 04:36:53,670 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 298 transitions. Word has length 116 [2022-03-20 04:36:53,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:36:53,672 INFO L478 AbstractCegarLoop]: Abstraction has 227 states and 298 transitions. [2022-03-20 04:36:53,672 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 16 states have internal predecessors, (45), 14 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 13 states have call predecessors, (31), 14 states have call successors, (31) [2022-03-20 04:36:53,672 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 298 transitions. [2022-03-20 04:36:53,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-03-20 04:36:53,674 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:36:53,674 INFO L499 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:36:53,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-20 04:36:53,887 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-20 04:36:53,887 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:36:53,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:36:53,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1136073891, now seen corresponding path program 2 times [2022-03-20 04:36:53,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:36:53,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439928188] [2022-03-20 04:36:53,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:36:53,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:36:53,895 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:36:53,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477850750] [2022-03-20 04:36:53,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 04:36:53,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:36:53,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:36:53,896 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:36:53,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-20 04:36:53,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 04:36:53,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 04:36:53,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 76 conjunts are in the unsatisfiable core [2022-03-20 04:36:53,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:36:55,012 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 04:36:55,015 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 04:36:55,042 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 04:36:55,045 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 04:36:55,048 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 04:36:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 133 proven. 86 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2022-03-20 04:36:55,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:36:57,616 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 154 proven. 12 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2022-03-20 04:36:57,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:36:57,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439928188] [2022-03-20 04:36:57,617 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:36:57,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477850750] [2022-03-20 04:36:57,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477850750] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:36:57,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 04:36:57,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 26 [2022-03-20 04:36:57,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42870338] [2022-03-20 04:36:57,618 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 04:36:57,618 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-20 04:36:57,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:36:57,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-20 04:36:57,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2022-03-20 04:36:57,619 INFO L87 Difference]: Start difference. First operand 227 states and 298 transitions. Second operand has 26 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 14 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) [2022-03-20 04:37:05,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:37:05,667 INFO L93 Difference]: Finished difference Result 276 states and 363 transitions. [2022-03-20 04:37:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-20 04:37:05,667 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 14 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) Word has length 127 [2022-03-20 04:37:05,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:37:05,671 INFO L225 Difference]: With dead ends: 276 [2022-03-20 04:37:05,671 INFO L226 Difference]: Without dead ends: 270 [2022-03-20 04:37:05,671 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=383, Invalid=1779, Unknown=0, NotChecked=0, Total=2162 [2022-03-20 04:37:05,672 INFO L913 BasicCegarLoop]: 51 mSDtfsCounter, 66 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-20 04:37:05,672 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 512 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-03-20 04:37:05,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-03-20 04:37:05,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 235. [2022-03-20 04:37:05,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 132 states have (on average 1.0909090909090908) internal successors, (144), 133 states have internal predecessors, (144), 78 states have call successors, (78), 25 states have call predecessors, (78), 24 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2022-03-20 04:37:05,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 299 transitions. [2022-03-20 04:37:05,679 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 299 transitions. Word has length 127 [2022-03-20 04:37:05,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:37:05,679 INFO L478 AbstractCegarLoop]: Abstraction has 235 states and 299 transitions. [2022-03-20 04:37:05,680 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 14 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) [2022-03-20 04:37:05,680 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 299 transitions. [2022-03-20 04:37:05,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-03-20 04:37:05,681 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:37:05,681 INFO L499 BasicCegarLoop]: trace histogram [24, 23, 23, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:37:05,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-20 04:37:05,884 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:37:05,884 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:37:05,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:37:05,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1033581786, now seen corresponding path program 3 times [2022-03-20 04:37:05,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:37:05,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961882112] [2022-03-20 04:37:05,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:37:05,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:37:05,891 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:37:05,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [383559917] [2022-03-20 04:37:05,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 04:37:05,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:37:05,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:37:05,896 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:37:05,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-20 04:37:07,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-20 04:37:07,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 04:37:07,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-20 04:37:07,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:37:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 168 proven. 35 refuted. 0 times theorem prover too weak. 979 trivial. 0 not checked. [2022-03-20 04:37:13,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:37:14,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:37:14,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961882112] [2022-03-20 04:37:14,387 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:37:14,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383559917] [2022-03-20 04:37:14,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383559917] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 04:37:14,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-20 04:37:14,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-03-20 04:37:14,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098732483] [2022-03-20 04:37:14,388 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-20 04:37:14,388 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-20 04:37:14,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:37:14,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-20 04:37:14,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-03-20 04:37:14,389 INFO L87 Difference]: Start difference. First operand 235 states and 299 transitions. Second operand has 17 states, 16 states have (on average 2.4375) internal successors, (39), 14 states have internal predecessors, (39), 8 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2022-03-20 04:37:22,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:37:22,065 INFO L93 Difference]: Finished difference Result 327 states and 446 transitions. [2022-03-20 04:37:22,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-20 04:37:22,065 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.4375) internal successors, (39), 14 states have internal predecessors, (39), 8 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) Word has length 168 [2022-03-20 04:37:22,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:37:22,067 INFO L225 Difference]: With dead ends: 327 [2022-03-20 04:37:22,067 INFO L226 Difference]: Without dead ends: 327 [2022-03-20 04:37:22,068 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=218, Invalid=1042, Unknown=0, NotChecked=0, Total=1260 [2022-03-20 04:37:22,068 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 43 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-20 04:37:22,068 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 288 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 469 Invalid, 0 Unknown, 61 Unchecked, 2.6s Time] [2022-03-20 04:37:22,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-03-20 04:37:22,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 323. [2022-03-20 04:37:22,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 170 states have (on average 1.1235294117647059) internal successors, (191), 172 states have internal predecessors, (191), 126 states have call successors, (126), 27 states have call predecessors, (126), 26 states have return successors, (125), 123 states have call predecessors, (125), 125 states have call successors, (125) [2022-03-20 04:37:22,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 442 transitions. [2022-03-20 04:37:22,078 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 442 transitions. Word has length 168 [2022-03-20 04:37:22,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:37:22,079 INFO L478 AbstractCegarLoop]: Abstraction has 323 states and 442 transitions. [2022-03-20 04:37:22,079 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.4375) internal successors, (39), 14 states have internal predecessors, (39), 8 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2022-03-20 04:37:22,079 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 442 transitions. [2022-03-20 04:37:22,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-03-20 04:37:22,082 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:37:22,082 INFO L499 BasicCegarLoop]: trace histogram [28, 27, 27, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:37:22,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-20 04:37:22,288 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-20 04:37:22,289 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:37:22,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:37:22,289 INFO L85 PathProgramCache]: Analyzing trace with hash -44343328, now seen corresponding path program 4 times [2022-03-20 04:37:22,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:37:22,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549944762] [2022-03-20 04:37:22,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:37:22,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:37:22,296 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:37:22,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922861511] [2022-03-20 04:37:22,297 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 04:37:22,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:37:22,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:37:22,298 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:37:22,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-20 04:37:22,801 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 04:37:22,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 04:37:22,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 111 conjunts are in the unsatisfiable core [2022-03-20 04:37:22,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:37:25,346 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 04:37:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 303 proven. 264 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2022-03-20 04:37:49,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:37:59,313 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 04:37:59,318 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 04:38:13,589 WARN L232 SmtUtils]: Spent 7.89s on a formula simplification that was a NOOP. DAG size: 24 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-03-20 04:38:19,920 WARN L232 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 30 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-03-20 04:39:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 356 proven. 91 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2022-03-20 04:39:16,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:39:16,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549944762] [2022-03-20 04:39:16,692 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:39:16,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922861511] [2022-03-20 04:39:16,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922861511] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:39:16,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 04:39:16,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17] total 34 [2022-03-20 04:39:16,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802422342] [2022-03-20 04:39:16,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 04:39:16,693 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-20 04:39:16,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:39:16,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-20 04:39:16,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=859, Unknown=5, NotChecked=0, Total=1122 [2022-03-20 04:39:16,693 INFO L87 Difference]: Start difference. First operand 323 states and 442 transitions. Second operand has 34 states, 32 states have (on average 1.96875) internal successors, (63), 28 states have internal predecessors, (63), 17 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (54), 18 states have call predecessors, (54), 16 states have call successors, (54) [2022-03-20 04:39:18,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:39:20,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:42:21,466 WARN L232 SmtUtils]: Spent 2.88m on a formula simplification. DAG size of input: 224 DAG size of output: 174 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 04:44:14,647 WARN L232 SmtUtils]: Spent 1.76m on a formula simplification. DAG size of input: 175 DAG size of output: 124 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 04:44:16,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:44:31,667 WARN L232 SmtUtils]: Spent 10.57s on a formula simplification. DAG size of input: 103 DAG size of output: 102 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 04:45:18,027 WARN L232 SmtUtils]: Spent 43.99s on a formula simplification. DAG size of input: 107 DAG size of output: 106 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 04:45:24,330 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:45:39,895 WARN L232 SmtUtils]: Spent 11.35s on a formula simplification. DAG size of input: 86 DAG size of output: 85 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 04:45:41,934 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse22 (* c_main_~q~0 c_main_~x~0)) (.cse23 (* c_main_~s~0 c_main_~y~0))) (let ((.cse27 (= (+ .cse22 .cse23 (* c_main_~b~0 c_main_~y~0)) (+ (* c_main_~q~0 c_main_~xy~0) (* c_main_~yy~0 c_main_~s~0) c_main_~b~0))) (.cse24 (* c_main_~q~0 c_main_~x~0 c_main_~k~0))) (let ((.cse20 (= c_main_~y~0 0)) (.cse21 (+ .cse24 c_main_~c~0 (* (- 1) c_main_~p~0 c_main_~x~0))) (.cse2 (not .cse27)) (.cse1 (* c_main_~b~0 2)) (.cse7 (not (= c_main_~b~0 (+ .cse22 .cse23)))) (.cse25 (* c_main_~p~0 c_main_~x~0))) (and (let ((.cse8 (+ 2 c_main_~k~0))) (let ((.cse3 (+ c_main_~p~0 (* (- 1) c_main_~q~0 .cse8))) (.cse5 (+ (* (- 1) (* c_main_~s~0 .cse8)) c_main_~r~0))) (let ((.cse4 (* .cse5 c_main_~y~0)) (.cse6 (* .cse3 c_main_~x~0))) (let ((.cse0 (+ .cse4 .cse6))) (or (not (= (+ c_main_~c~0 (* (- 2) c_main_~b~0)) .cse0)) (not (<= .cse1 c_main_~c~0)) (= .cse0 0) .cse2 (= (+ (* .cse3 c_main_~xy~0) .cse4 (* c_main_~yy~0 .cse5) .cse6) (+ (* .cse0 c_main_~y~0) .cse4 .cse6)) .cse7 (<= (* c_main_~b~0 3) c_main_~c~0)))))) (let ((.cse26 (* (- 1) c_main_~q~0 c_main_~k~0)) (.cse18 (div .cse21 c_main_~y~0))) (let ((.cse11 (+ c_main_~s~0 (* (- 2) .cse18))) (.cse10 (+ (* (- 2) c_main_~p~0) c_main_~q~0 (* (- 2) .cse26)))) (let ((.cse19 (* c_main_~y~0 .cse18)) (.cse9 (* .cse10 c_main_~x~0)) (.cse12 (* .cse11 c_main_~y~0))) (let ((.cse13 (+ .cse9 .cse12)) (.cse17 (+ c_main_~p~0 .cse26)) (.cse14 (* 2 .cse19)) (.cse15 (* 2 .cse25)) (.cse16 (+ .cse22 .cse23 (* 2 .cse24)))) (or (= (+ .cse9 (* c_main_~xy~0 .cse10) (* c_main_~yy~0 .cse11) .cse12) (+ (* .cse13 c_main_~y~0) .cse9 .cse12)) (<= (+ .cse14 c_main_~c~0 .cse15) .cse16) (not (= (+ (* c_main_~xy~0 .cse17) (* c_main_~yy~0 .cse18) c_main_~c~0) (+ (* .cse17 c_main_~x~0) .cse19 (* c_main_~c~0 c_main_~y~0)))) .cse20 (< c_main_~r~0 (+ (* c_main_~s~0 c_main_~k~0) .cse18)) (not (= (mod .cse21 c_main_~y~0) 0)) (= .cse13 0) (not (= c_main_~b~0 (+ (* (- 2) .cse17 c_main_~x~0) .cse22 (* 2 c_main_~c~0) (* (- 2) c_main_~y~0 .cse18) .cse23))) (not (<= (+ .cse14 .cse15) .cse16))))))) .cse27 (or (not .cse20) (forall ((v_main_~s~0_49 Int)) (let ((.cse32 (* c_main_~p~0 c_main_~x~0)) (.cse33 (* v_main_~s~0_49 c_main_~y~0))) (let ((.cse34 (* 2 .cse33)) (.cse35 (* 2 .cse32)) (.cse31 (* c_main_~q~0 c_main_~x~0 c_main_~k~0))) (let ((.cse30 (* v_main_~s~0_49 c_main_~yy~0)) (.cse29 (* c_main_~xy~0 c_main_~p~0)) (.cse28 (* c_main_~q~0 c_main_~xy~0 c_main_~k~0)) (.cse36 (+ (* c_main_~q~0 c_main_~x~0) (* c_main_~s~0 c_main_~y~0) (* 2 .cse31))) (.cse37 (+ .cse34 .cse35))) (or (= (+ (* c_main_~q~0 c_main_~xy~0) (* c_main_~yy~0 c_main_~s~0) (* 2 (* c_main_~p~0 c_main_~x~0 c_main_~y~0)) (* .cse28 2) (* 2 (* v_main_~s~0_49 c_main_~y~0 c_main_~y~0))) (+ (* 2 .cse29) (* c_main_~q~0 c_main_~x~0 c_main_~y~0) (* .cse30 2) (* (* c_main_~q~0 c_main_~x~0 c_main_~y~0 c_main_~k~0) 2) (* c_main_~s~0 c_main_~y~0 c_main_~y~0))) (not (= (+ .cse30 .cse31 c_main_~c~0 .cse29) (+ .cse28 .cse32 .cse33 (* c_main_~c~0 c_main_~y~0)))) (<= (+ .cse34 c_main_~c~0 .cse35) .cse36) (< c_main_~r~0 (+ v_main_~s~0_49 (* c_main_~s~0 c_main_~k~0))) (= .cse36 .cse37) (< .cse36 .cse37)))))) (not (= (+ (div (+ (* (- 1) c_main_~b~0) .cse22 .cse23) 2) .cse24 c_main_~c~0) .cse25)) (not (= .cse21 0)) (not (= (mod (+ c_main_~b~0 (* c_main_~q~0 2 c_main_~x~0 c_main_~k~0) .cse22 .cse23 (* (- 2) c_main_~p~0 c_main_~x~0)) 2) 0))) (let ((.cse45 (+ c_main_~p~0 (* (- 2) c_main_~q~0))) (.cse46 (+ (* (- 2) c_main_~s~0) c_main_~r~0))) (let ((.cse43 (* .cse46 c_main_~y~0)) (.cse44 (* .cse45 c_main_~x~0)) (.cse39 (* c_main_~r~0 c_main_~y~0))) (let ((.cse40 (* .cse22 2)) (.cse41 (* 2 .cse23)) (.cse42 (+ .cse25 .cse39)) (.cse38 (+ .cse43 .cse44))) (or (= .cse38 0) .cse2 (not (= (+ .cse1 (* (- 2) c_main_~q~0 c_main_~x~0) .cse25 .cse39 (* (- 2) c_main_~s~0 c_main_~y~0)) c_main_~a~0)) .cse7 (not (<= (+ .cse40 .cse41) .cse42)) (<= (+ .cse40 c_main_~b~0 .cse41) .cse42) (= (+ .cse43 (* .cse38 c_main_~y~0) .cse44) (+ .cse43 (* c_main_~xy~0 .cse45) .cse44 (* .cse46 c_main_~yy~0))))))))))) is different from true [2022-03-20 04:46:04,773 WARN L232 SmtUtils]: Spent 13.70s on a formula simplification. DAG size of input: 128 DAG size of output: 127 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 04:46:06,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:46:39,692 WARN L232 SmtUtils]: Spent 23.32s on a formula simplification. DAG size of input: 129 DAG size of output: 129 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 04:46:47,222 WARN L232 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 103 DAG size of output: 102 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 04:48:42,929 WARN L232 SmtUtils]: Spent 1.57m on a formula simplification. DAG size of input: 156 DAG size of output: 106 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 04:49:37,264 WARN L232 SmtUtils]: Spent 38.28s on a formula simplification. DAG size of input: 181 DAG size of output: 78 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 04:49:39,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:49:41,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 04:49:58,000 WARN L232 SmtUtils]: Spent 11.75s on a formula simplification that was a NOOP. DAG size: 128 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 04:50:00,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []