/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound20.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 11:50:59,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 11:50:59,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 11:50:59,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 11:50:59,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 11:50:59,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 11:50:59,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 11:50:59,541 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-08 11:50:59,551 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 11:50:59,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 11:50:59,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 11:50:59,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 11:50:59,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 11:50:59,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 11:50:59,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 11:50:59,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 11:50:59,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 11:50:59,554 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 11:50:59,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 11:50:59,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 11:50:59,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 11:50:59,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 11:50:59,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 11:50:59,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 11:50:59,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 11:50:59,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 11:50:59,556 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 11:50:59,556 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 11:50:59,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 11:50:59,556 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-08 11:50:59,556 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 11:50:59,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 11:50:59,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 11:50:59,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 11:50:59,840 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 11:50:59,842 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 11:50:59,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound20.i [2022-04-08 11:50:59,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/889ce9d1c/ab1d1717da3a40229a26822f30ec9c44/FLAGcd76e7567 [2022-04-08 11:51:00,275 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 11:51:00,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound20.i [2022-04-08 11:51:00,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/889ce9d1c/ab1d1717da3a40229a26822f30ec9c44/FLAGcd76e7567 [2022-04-08 11:51:00,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/889ce9d1c/ab1d1717da3a40229a26822f30ec9c44 [2022-04-08 11:51:00,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 11:51:00,297 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 11:51:00,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 11:51:00,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 11:51:00,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 11:51:00,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 11:51:00" (1/1) ... [2022-04-08 11:51:00,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62de3dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 11:51:00, skipping insertion in model container [2022-04-08 11:51:00,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 11:51:00" (1/1) ... [2022-04-08 11:51:00,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 11:51:00,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 11:51:00,478 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound20.i[950,963] [2022-04-08 11:51:00,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 11:51:00,504 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 11:51:00,515 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound20.i[950,963] [2022-04-08 11:51:00,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 11:51:00,534 INFO L208 MainTranslator]: Completed translation [2022-04-08 11:51:00,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 11:51:00 WrapperNode [2022-04-08 11:51:00,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 11:51:00,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 11:51:00,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 11:51:00,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 11:51:00,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 11:51:00" (1/1) ... [2022-04-08 11:51:00,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 11:51:00" (1/1) ... [2022-04-08 11:51:00,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 11:51:00" (1/1) ... [2022-04-08 11:51:00,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 11:51:00" (1/1) ... [2022-04-08 11:51:00,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 11:51:00" (1/1) ... [2022-04-08 11:51:00,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 11:51:00" (1/1) ... [2022-04-08 11:51:00,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 11:51:00" (1/1) ... [2022-04-08 11:51:00,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 11:51:00,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 11:51:00,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 11:51:00,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 11:51:00,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 11:51:00" (1/1) ... [2022-04-08 11:51:00,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 11:51:00,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 11:51:00,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-08 11:51:00,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-08 11:51:00,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 11:51:00,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 11:51:00,673 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 11:51:00,673 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-08 11:51:00,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 11:51:00,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 11:51:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 11:51:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 11:51:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-08 11:51:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-08 11:51:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 11:51:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 11:51:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-08 11:51:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-08 11:51:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 11:51:00,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 11:51:00,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 11:51:00,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 11:51:00,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 11:51:00,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 11:51:00,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 11:51:00,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 11:51:00,755 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 11:51:00,757 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 11:51:00,910 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 11:51:00,917 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 11:51:00,917 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-08 11:51:00,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 11:51:00 BoogieIcfgContainer [2022-04-08 11:51:00,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 11:51:00,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 11:51:00,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 11:51:00,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 11:51:00,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 11:51:00" (1/3) ... [2022-04-08 11:51:00,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6eef87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 11:51:00, skipping insertion in model container [2022-04-08 11:51:00,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 11:51:00" (2/3) ... [2022-04-08 11:51:00,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6eef87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 11:51:00, skipping insertion in model container [2022-04-08 11:51:00,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 11:51:00" (3/3) ... [2022-04-08 11:51:00,940 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound20.i [2022-04-08 11:51:00,945 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 11:51:00,945 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 11:51:01,004 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 11:51:01,022 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-08 11:51:01,022 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 11:51:01,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 11:51:01,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-08 11:51:01,051 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 11:51:01,052 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 11:51:01,052 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 11:51:01,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 11:51:01,057 INFO L85 PathProgramCache]: Analyzing trace with hash 878397729, now seen corresponding path program 1 times [2022-04-08 11:51:01,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 11:51:01,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [529271408] [2022-04-08 11:51:01,074 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 11:51:01,074 INFO L85 PathProgramCache]: Analyzing trace with hash 878397729, now seen corresponding path program 2 times [2022-04-08 11:51:01,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 11:51:01,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370248602] [2022-04-08 11:51:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 11:51:01,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 11:51:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 11:51:01,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 11:51:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 11:51:01,264 INFO L290 TraceCheckUtils]: 0: Hoare triple {49#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {36#true} is VALID [2022-04-08 11:51:01,265 INFO L290 TraceCheckUtils]: 1: Hoare triple {36#true} assume true; {36#true} is VALID [2022-04-08 11:51:01,265 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {36#true} {36#true} #89#return; {36#true} is VALID [2022-04-08 11:51:01,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-08 11:51:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 11:51:01,294 INFO L290 TraceCheckUtils]: 0: Hoare triple {36#true} ~cond := #in~cond; {36#true} is VALID [2022-04-08 11:51:01,295 INFO L290 TraceCheckUtils]: 1: Hoare triple {36#true} assume 0 == ~cond;assume false; {37#false} is VALID [2022-04-08 11:51:01,296 INFO L290 TraceCheckUtils]: 2: Hoare triple {37#false} assume true; {37#false} is VALID [2022-04-08 11:51:01,296 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {37#false} {36#true} #81#return; {37#false} is VALID [2022-04-08 11:51:01,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-08 11:51:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 11:51:01,309 INFO L290 TraceCheckUtils]: 0: Hoare triple {36#true} ~cond := #in~cond; {36#true} is VALID [2022-04-08 11:51:01,310 INFO L290 TraceCheckUtils]: 1: Hoare triple {36#true} assume 0 == ~cond;assume false; {37#false} is VALID [2022-04-08 11:51:01,311 INFO L290 TraceCheckUtils]: 2: Hoare triple {37#false} assume true; {37#false} is VALID [2022-04-08 11:51:01,311 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {37#false} {37#false} #83#return; {37#false} is VALID [2022-04-08 11:51:01,312 INFO L272 TraceCheckUtils]: 0: Hoare triple {36#true} call ULTIMATE.init(); {49#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 11:51:01,312 INFO L290 TraceCheckUtils]: 1: Hoare triple {49#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {36#true} is VALID [2022-04-08 11:51:01,313 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#true} assume true; {36#true} is VALID [2022-04-08 11:51:01,313 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#true} {36#true} #89#return; {36#true} is VALID [2022-04-08 11:51:01,314 INFO L272 TraceCheckUtils]: 4: Hoare triple {36#true} call #t~ret5 := main(); {36#true} is VALID [2022-04-08 11:51:01,314 INFO L290 TraceCheckUtils]: 5: Hoare triple {36#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {36#true} is VALID [2022-04-08 11:51:01,315 INFO L272 TraceCheckUtils]: 6: Hoare triple {36#true} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {36#true} is VALID [2022-04-08 11:51:01,315 INFO L290 TraceCheckUtils]: 7: Hoare triple {36#true} ~cond := #in~cond; {36#true} is VALID [2022-04-08 11:51:01,316 INFO L290 TraceCheckUtils]: 8: Hoare triple {36#true} assume 0 == ~cond;assume false; {37#false} is VALID [2022-04-08 11:51:01,316 INFO L290 TraceCheckUtils]: 9: Hoare triple {37#false} assume true; {37#false} is VALID [2022-04-08 11:51:01,316 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {37#false} {36#true} #81#return; {37#false} is VALID [2022-04-08 11:51:01,317 INFO L272 TraceCheckUtils]: 11: Hoare triple {37#false} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {36#true} is VALID [2022-04-08 11:51:01,317 INFO L290 TraceCheckUtils]: 12: Hoare triple {36#true} ~cond := #in~cond; {36#true} is VALID [2022-04-08 11:51:01,317 INFO L290 TraceCheckUtils]: 13: Hoare triple {36#true} assume 0 == ~cond;assume false; {37#false} is VALID [2022-04-08 11:51:01,317 INFO L290 TraceCheckUtils]: 14: Hoare triple {37#false} assume true; {37#false} is VALID [2022-04-08 11:51:01,318 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {37#false} {37#false} #83#return; {37#false} is VALID [2022-04-08 11:51:01,318 INFO L290 TraceCheckUtils]: 16: Hoare triple {37#false} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {37#false} is VALID [2022-04-08 11:51:01,318 INFO L290 TraceCheckUtils]: 17: Hoare triple {37#false} assume !true; {37#false} is VALID [2022-04-08 11:51:01,319 INFO L290 TraceCheckUtils]: 18: Hoare triple {37#false} assume !true; {37#false} is VALID [2022-04-08 11:51:01,319 INFO L272 TraceCheckUtils]: 19: Hoare triple {37#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {37#false} is VALID [2022-04-08 11:51:01,319 INFO L290 TraceCheckUtils]: 20: Hoare triple {37#false} ~cond := #in~cond; {37#false} is VALID [2022-04-08 11:51:01,321 INFO L290 TraceCheckUtils]: 21: Hoare triple {37#false} assume 0 == ~cond; {37#false} is VALID [2022-04-08 11:51:01,321 INFO L290 TraceCheckUtils]: 22: Hoare triple {37#false} assume !false; {37#false} is VALID [2022-04-08 11:51:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 11:51:01,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 11:51:01,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370248602] [2022-04-08 11:51:01,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370248602] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 11:51:01,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 11:51:01,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 11:51:01,328 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 11:51:01,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [529271408] [2022-04-08 11:51:01,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [529271408] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 11:51:01,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 11:51:01,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 11:51:01,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318172050] [2022-04-08 11:51:01,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 11:51:01,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-08 11:51:01,338 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 11:51:01,342 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 11:51:01,379 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:01,380 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 11:51:01,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 11:51:01,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 11:51:01,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 11:51:01,412 INFO L87 Difference]: Start difference. First operand has 33 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 11:51:01,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:01,602 INFO L93 Difference]: Finished difference Result 60 states and 84 transitions. [2022-04-08 11:51:01,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 11:51:01,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-08 11:51:01,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 11:51:01,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 11:51:01,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2022-04-08 11:51:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 11:51:01,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2022-04-08 11:51:01,618 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 84 transitions. [2022-04-08 11:51:01,736 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 84 edges. 84 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:01,744 INFO L225 Difference]: With dead ends: 60 [2022-04-08 11:51:01,744 INFO L226 Difference]: Without dead ends: 29 [2022-04-08 11:51:01,747 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 11:51:01,749 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 11:51:01,757 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 40 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 11:51:01,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-04-08 11:51:01,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-04-08 11:51:01,786 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 11:51:01,787 INFO L82 GeneralOperation]: Start isEquivalent. First operand 29 states. Second operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:51:01,787 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:51:01,788 INFO L87 Difference]: Start difference. First operand 29 states. Second operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:51:01,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:01,792 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-04-08 11:51:01,793 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-04-08 11:51:01,793 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:51:01,793 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:51:01,794 INFO L74 IsIncluded]: Start isIncluded. First operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 29 states. [2022-04-08 11:51:01,794 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 29 states. [2022-04-08 11:51:01,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:01,798 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-04-08 11:51:01,799 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-04-08 11:51:01,799 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:51:01,799 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:51:01,799 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 11:51:01,800 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 11:51:01,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:51:01,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-04-08 11:51:01,804 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 23 [2022-04-08 11:51:01,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 11:51:01,805 INFO L478 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-04-08 11:51:01,805 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 11:51:01,805 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 28 states and 34 transitions. [2022-04-08 11:51:01,842 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:01,843 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-04-08 11:51:01,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-08 11:51:01,844 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 11:51:01,844 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 11:51:01,844 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 11:51:01,844 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 11:51:01,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 11:51:01,845 INFO L85 PathProgramCache]: Analyzing trace with hash 994169231, now seen corresponding path program 1 times [2022-04-08 11:51:01,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 11:51:01,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1050566275] [2022-04-08 11:51:01,846 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 11:51:01,846 INFO L85 PathProgramCache]: Analyzing trace with hash 994169231, now seen corresponding path program 2 times [2022-04-08 11:51:01,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 11:51:01,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610014031] [2022-04-08 11:51:01,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 11:51:01,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 11:51:01,875 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 11:51:01,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756809545] [2022-04-08 11:51:01,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 11:51:01,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:51:01,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 11:51:01,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 11:51:01,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-08 11:51:01,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-08 11:51:01,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 11:51:01,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-08 11:51:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 11:51:01,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 11:51:02,178 INFO L272 TraceCheckUtils]: 0: Hoare triple {286#true} call ULTIMATE.init(); {286#true} is VALID [2022-04-08 11:51:02,180 INFO L290 TraceCheckUtils]: 1: Hoare triple {286#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {294#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:02,181 INFO L290 TraceCheckUtils]: 2: Hoare triple {294#(<= ~counter~0 0)} assume true; {294#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:02,181 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {294#(<= ~counter~0 0)} {286#true} #89#return; {294#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:02,182 INFO L272 TraceCheckUtils]: 4: Hoare triple {294#(<= ~counter~0 0)} call #t~ret5 := main(); {294#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:02,182 INFO L290 TraceCheckUtils]: 5: Hoare triple {294#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {294#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:02,185 INFO L272 TraceCheckUtils]: 6: Hoare triple {294#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {294#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:02,186 INFO L290 TraceCheckUtils]: 7: Hoare triple {294#(<= ~counter~0 0)} ~cond := #in~cond; {294#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:02,186 INFO L290 TraceCheckUtils]: 8: Hoare triple {294#(<= ~counter~0 0)} assume !(0 == ~cond); {294#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:02,187 INFO L290 TraceCheckUtils]: 9: Hoare triple {294#(<= ~counter~0 0)} assume true; {294#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:02,189 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {294#(<= ~counter~0 0)} {294#(<= ~counter~0 0)} #81#return; {294#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:02,190 INFO L272 TraceCheckUtils]: 11: Hoare triple {294#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {294#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:02,190 INFO L290 TraceCheckUtils]: 12: Hoare triple {294#(<= ~counter~0 0)} ~cond := #in~cond; {294#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:02,191 INFO L290 TraceCheckUtils]: 13: Hoare triple {294#(<= ~counter~0 0)} assume !(0 == ~cond); {294#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:02,194 INFO L290 TraceCheckUtils]: 14: Hoare triple {294#(<= ~counter~0 0)} assume true; {294#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:02,195 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {294#(<= ~counter~0 0)} {294#(<= ~counter~0 0)} #83#return; {294#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:02,196 INFO L290 TraceCheckUtils]: 16: Hoare triple {294#(<= ~counter~0 0)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {294#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:02,197 INFO L290 TraceCheckUtils]: 17: Hoare triple {294#(<= ~counter~0 0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {343#(<= |main_#t~post3| 0)} is VALID [2022-04-08 11:51:02,199 INFO L290 TraceCheckUtils]: 18: Hoare triple {343#(<= |main_#t~post3| 0)} assume !(#t~post3 < 20);havoc #t~post3; {287#false} is VALID [2022-04-08 11:51:02,199 INFO L290 TraceCheckUtils]: 19: Hoare triple {287#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {287#false} is VALID [2022-04-08 11:51:02,199 INFO L290 TraceCheckUtils]: 20: Hoare triple {287#false} assume !(#t~post4 < 20);havoc #t~post4; {287#false} is VALID [2022-04-08 11:51:02,200 INFO L272 TraceCheckUtils]: 21: Hoare triple {287#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {287#false} is VALID [2022-04-08 11:51:02,200 INFO L290 TraceCheckUtils]: 22: Hoare triple {287#false} ~cond := #in~cond; {287#false} is VALID [2022-04-08 11:51:02,200 INFO L290 TraceCheckUtils]: 23: Hoare triple {287#false} assume 0 == ~cond; {287#false} is VALID [2022-04-08 11:51:02,200 INFO L290 TraceCheckUtils]: 24: Hoare triple {287#false} assume !false; {287#false} is VALID [2022-04-08 11:51:02,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 11:51:02,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 11:51:02,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 11:51:02,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610014031] [2022-04-08 11:51:02,201 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 11:51:02,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756809545] [2022-04-08 11:51:02,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756809545] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 11:51:02,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 11:51:02,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-08 11:51:02,203 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 11:51:02,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1050566275] [2022-04-08 11:51:02,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1050566275] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 11:51:02,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 11:51:02,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-08 11:51:02,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634050784] [2022-04-08 11:51:02,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 11:51:02,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-04-08 11:51:02,205 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 11:51:02,205 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 11:51:02,238 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:02,239 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-08 11:51:02,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 11:51:02,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-08 11:51:02,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-08 11:51:02,241 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 11:51:02,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:02,355 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-04-08 11:51:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-08 11:51:02,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-04-08 11:51:02,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 11:51:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 11:51:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2022-04-08 11:51:02,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 11:51:02,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2022-04-08 11:51:02,369 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 52 transitions. [2022-04-08 11:51:02,416 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 52 edges. 52 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:02,420 INFO L225 Difference]: With dead ends: 42 [2022-04-08 11:51:02,420 INFO L226 Difference]: Without dead ends: 30 [2022-04-08 11:51:02,423 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-08 11:51:02,429 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 11:51:02,434 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 11:51:02,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-08 11:51:02,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-04-08 11:51:02,464 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 11:51:02,464 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:51:02,465 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:51:02,465 INFO L87 Difference]: Start difference. First operand 30 states. Second operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:51:02,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:02,468 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-04-08 11:51:02,468 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-04-08 11:51:02,468 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:51:02,469 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:51:02,469 INFO L74 IsIncluded]: Start isIncluded. First operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 30 states. [2022-04-08 11:51:02,469 INFO L87 Difference]: Start difference. First operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 30 states. [2022-04-08 11:51:02,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:02,472 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-04-08 11:51:02,472 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-04-08 11:51:02,472 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:51:02,473 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:51:02,473 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 11:51:02,473 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 11:51:02,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:51:02,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-04-08 11:51:02,478 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 25 [2022-04-08 11:51:02,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 11:51:02,478 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-04-08 11:51:02,479 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 11:51:02,479 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 30 states and 36 transitions. [2022-04-08 11:51:02,520 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:02,520 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-04-08 11:51:02,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-08 11:51:02,526 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 11:51:02,526 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 11:51:02,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-08 11:51:02,739 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:51:02,740 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 11:51:02,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 11:51:02,741 INFO L85 PathProgramCache]: Analyzing trace with hash 422434646, now seen corresponding path program 1 times [2022-04-08 11:51:02,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 11:51:02,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [711606185] [2022-04-08 11:51:02,742 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 11:51:02,742 INFO L85 PathProgramCache]: Analyzing trace with hash 422434646, now seen corresponding path program 2 times [2022-04-08 11:51:02,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 11:51:02,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982613173] [2022-04-08 11:51:02,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 11:51:02,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 11:51:02,764 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 11:51:02,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437705368] [2022-04-08 11:51:02,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 11:51:02,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:51:02,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 11:51:02,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 11:51:02,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-08 11:51:02,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-08 11:51:02,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 11:51:02,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-08 11:51:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 11:51:02,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 11:51:03,061 INFO L272 TraceCheckUtils]: 0: Hoare triple {568#true} call ULTIMATE.init(); {568#true} is VALID [2022-04-08 11:51:03,062 INFO L290 TraceCheckUtils]: 1: Hoare triple {568#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {576#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:03,062 INFO L290 TraceCheckUtils]: 2: Hoare triple {576#(<= ~counter~0 0)} assume true; {576#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:03,063 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {576#(<= ~counter~0 0)} {568#true} #89#return; {576#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:03,063 INFO L272 TraceCheckUtils]: 4: Hoare triple {576#(<= ~counter~0 0)} call #t~ret5 := main(); {576#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:03,064 INFO L290 TraceCheckUtils]: 5: Hoare triple {576#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {576#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:03,064 INFO L272 TraceCheckUtils]: 6: Hoare triple {576#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {576#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:03,065 INFO L290 TraceCheckUtils]: 7: Hoare triple {576#(<= ~counter~0 0)} ~cond := #in~cond; {576#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:03,065 INFO L290 TraceCheckUtils]: 8: Hoare triple {576#(<= ~counter~0 0)} assume !(0 == ~cond); {576#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:03,065 INFO L290 TraceCheckUtils]: 9: Hoare triple {576#(<= ~counter~0 0)} assume true; {576#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:03,066 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {576#(<= ~counter~0 0)} {576#(<= ~counter~0 0)} #81#return; {576#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:03,066 INFO L272 TraceCheckUtils]: 11: Hoare triple {576#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {576#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:03,067 INFO L290 TraceCheckUtils]: 12: Hoare triple {576#(<= ~counter~0 0)} ~cond := #in~cond; {576#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:03,067 INFO L290 TraceCheckUtils]: 13: Hoare triple {576#(<= ~counter~0 0)} assume !(0 == ~cond); {576#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:03,068 INFO L290 TraceCheckUtils]: 14: Hoare triple {576#(<= ~counter~0 0)} assume true; {576#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:03,068 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {576#(<= ~counter~0 0)} {576#(<= ~counter~0 0)} #83#return; {576#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:03,069 INFO L290 TraceCheckUtils]: 16: Hoare triple {576#(<= ~counter~0 0)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {576#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:03,070 INFO L290 TraceCheckUtils]: 17: Hoare triple {576#(<= ~counter~0 0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {625#(<= ~counter~0 1)} is VALID [2022-04-08 11:51:03,071 INFO L290 TraceCheckUtils]: 18: Hoare triple {625#(<= ~counter~0 1)} assume !!(#t~post3 < 20);havoc #t~post3; {625#(<= ~counter~0 1)} is VALID [2022-04-08 11:51:03,071 INFO L290 TraceCheckUtils]: 19: Hoare triple {625#(<= ~counter~0 1)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {625#(<= ~counter~0 1)} is VALID [2022-04-08 11:51:03,072 INFO L290 TraceCheckUtils]: 20: Hoare triple {625#(<= ~counter~0 1)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {635#(<= |main_#t~post4| 1)} is VALID [2022-04-08 11:51:03,072 INFO L290 TraceCheckUtils]: 21: Hoare triple {635#(<= |main_#t~post4| 1)} assume !(#t~post4 < 20);havoc #t~post4; {569#false} is VALID [2022-04-08 11:51:03,072 INFO L272 TraceCheckUtils]: 22: Hoare triple {569#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {569#false} is VALID [2022-04-08 11:51:03,073 INFO L290 TraceCheckUtils]: 23: Hoare triple {569#false} ~cond := #in~cond; {569#false} is VALID [2022-04-08 11:51:03,073 INFO L290 TraceCheckUtils]: 24: Hoare triple {569#false} assume 0 == ~cond; {569#false} is VALID [2022-04-08 11:51:03,073 INFO L290 TraceCheckUtils]: 25: Hoare triple {569#false} assume !false; {569#false} is VALID [2022-04-08 11:51:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 11:51:03,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 11:51:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 11:51:03,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982613173] [2022-04-08 11:51:03,074 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 11:51:03,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437705368] [2022-04-08 11:51:03,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437705368] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 11:51:03,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 11:51:03,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 11:51:03,075 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 11:51:03,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [711606185] [2022-04-08 11:51:03,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [711606185] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 11:51:03,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 11:51:03,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 11:51:03,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957061858] [2022-04-08 11:51:03,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 11:51:03,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-04-08 11:51:03,077 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 11:51:03,078 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 11:51:03,097 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:03,098 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 11:51:03,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 11:51:03,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 11:51:03,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-08 11:51:03,099 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 11:51:03,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:03,209 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-04-08 11:51:03,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-08 11:51:03,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-04-08 11:51:03,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 11:51:03,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 11:51:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2022-04-08 11:51:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 11:51:03,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2022-04-08 11:51:03,224 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 48 transitions. [2022-04-08 11:51:03,261 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:03,264 INFO L225 Difference]: With dead ends: 41 [2022-04-08 11:51:03,265 INFO L226 Difference]: Without dead ends: 34 [2022-04-08 11:51:03,265 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-08 11:51:03,279 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 11:51:03,280 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 82 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 11:51:03,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-08 11:51:03,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-04-08 11:51:03,297 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 11:51:03,297 INFO L82 GeneralOperation]: Start isEquivalent. First operand 34 states. Second operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:51:03,297 INFO L74 IsIncluded]: Start isIncluded. First operand 34 states. Second operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:51:03,298 INFO L87 Difference]: Start difference. First operand 34 states. Second operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:51:03,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:03,300 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-04-08 11:51:03,300 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-04-08 11:51:03,301 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:51:03,301 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:51:03,302 INFO L74 IsIncluded]: Start isIncluded. First operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 34 states. [2022-04-08 11:51:03,302 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 34 states. [2022-04-08 11:51:03,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:03,304 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-04-08 11:51:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-04-08 11:51:03,305 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:51:03,305 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:51:03,305 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 11:51:03,305 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 11:51:03,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:51:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-04-08 11:51:03,308 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 26 [2022-04-08 11:51:03,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 11:51:03,308 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-04-08 11:51:03,308 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 11:51:03,309 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 33 states and 40 transitions. [2022-04-08 11:51:03,350 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:03,351 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-04-08 11:51:03,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-08 11:51:03,353 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 11:51:03,353 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 11:51:03,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-08 11:51:03,575 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-08 11:51:03,576 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 11:51:03,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 11:51:03,576 INFO L85 PathProgramCache]: Analyzing trace with hash 424222106, now seen corresponding path program 1 times [2022-04-08 11:51:03,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 11:51:03,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [999168872] [2022-04-08 11:51:03,577 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 11:51:03,577 INFO L85 PathProgramCache]: Analyzing trace with hash 424222106, now seen corresponding path program 2 times [2022-04-08 11:51:03,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 11:51:03,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840740531] [2022-04-08 11:51:03,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 11:51:03,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 11:51:03,607 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 11:51:03,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032798591] [2022-04-08 11:51:03,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 11:51:03,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:51:03,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 11:51:03,612 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 11:51:03,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-08 11:51:03,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-08 11:51:03,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 11:51:03,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-08 11:51:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 11:51:03,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 11:51:04,230 INFO L272 TraceCheckUtils]: 0: Hoare triple {866#true} call ULTIMATE.init(); {866#true} is VALID [2022-04-08 11:51:04,231 INFO L290 TraceCheckUtils]: 1: Hoare triple {866#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {866#true} is VALID [2022-04-08 11:51:04,232 INFO L290 TraceCheckUtils]: 2: Hoare triple {866#true} assume true; {866#true} is VALID [2022-04-08 11:51:04,232 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {866#true} {866#true} #89#return; {866#true} is VALID [2022-04-08 11:51:04,233 INFO L272 TraceCheckUtils]: 4: Hoare triple {866#true} call #t~ret5 := main(); {866#true} is VALID [2022-04-08 11:51:04,233 INFO L290 TraceCheckUtils]: 5: Hoare triple {866#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {866#true} is VALID [2022-04-08 11:51:04,233 INFO L272 TraceCheckUtils]: 6: Hoare triple {866#true} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {866#true} is VALID [2022-04-08 11:51:04,233 INFO L290 TraceCheckUtils]: 7: Hoare triple {866#true} ~cond := #in~cond; {866#true} is VALID [2022-04-08 11:51:04,233 INFO L290 TraceCheckUtils]: 8: Hoare triple {866#true} assume !(0 == ~cond); {866#true} is VALID [2022-04-08 11:51:04,234 INFO L290 TraceCheckUtils]: 9: Hoare triple {866#true} assume true; {866#true} is VALID [2022-04-08 11:51:04,234 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {866#true} {866#true} #81#return; {866#true} is VALID [2022-04-08 11:51:04,234 INFO L272 TraceCheckUtils]: 11: Hoare triple {866#true} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {866#true} is VALID [2022-04-08 11:51:04,234 INFO L290 TraceCheckUtils]: 12: Hoare triple {866#true} ~cond := #in~cond; {866#true} is VALID [2022-04-08 11:51:04,234 INFO L290 TraceCheckUtils]: 13: Hoare triple {866#true} assume !(0 == ~cond); {866#true} is VALID [2022-04-08 11:51:04,234 INFO L290 TraceCheckUtils]: 14: Hoare triple {866#true} assume true; {866#true} is VALID [2022-04-08 11:51:04,235 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {866#true} {866#true} #83#return; {866#true} is VALID [2022-04-08 11:51:04,238 INFO L290 TraceCheckUtils]: 16: Hoare triple {866#true} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-08 11:51:04,239 INFO L290 TraceCheckUtils]: 17: Hoare triple {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-08 11:51:04,240 INFO L290 TraceCheckUtils]: 18: Hoare triple {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !!(#t~post3 < 20);havoc #t~post3; {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-08 11:51:04,241 INFO L290 TraceCheckUtils]: 19: Hoare triple {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-08 11:51:04,241 INFO L290 TraceCheckUtils]: 20: Hoare triple {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-08 11:51:04,242 INFO L290 TraceCheckUtils]: 21: Hoare triple {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !!(#t~post4 < 20);havoc #t~post4; {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-08 11:51:04,243 INFO L272 TraceCheckUtils]: 22: Hoare triple {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {939#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 11:51:04,243 INFO L290 TraceCheckUtils]: 23: Hoare triple {939#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {943#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 11:51:04,244 INFO L290 TraceCheckUtils]: 24: Hoare triple {943#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {867#false} is VALID [2022-04-08 11:51:04,244 INFO L290 TraceCheckUtils]: 25: Hoare triple {867#false} assume !false; {867#false} is VALID [2022-04-08 11:51:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 11:51:04,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 11:51:04,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 11:51:04,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840740531] [2022-04-08 11:51:04,245 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 11:51:04,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032798591] [2022-04-08 11:51:04,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032798591] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 11:51:04,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 11:51:04,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 11:51:04,246 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 11:51:04,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [999168872] [2022-04-08 11:51:04,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [999168872] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 11:51:04,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 11:51:04,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 11:51:04,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008050972] [2022-04-08 11:51:04,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 11:51:04,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-04-08 11:51:04,247 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 11:51:04,247 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-08 11:51:04,268 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:04,268 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 11:51:04,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 11:51:04,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 11:51:04,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-08 11:51:04,269 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-08 11:51:06,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-04-08 11:51:06,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:06,621 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2022-04-08 11:51:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 11:51:06,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-04-08 11:51:06,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 11:51:06,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-08 11:51:06,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2022-04-08 11:51:06,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-08 11:51:06,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2022-04-08 11:51:06,626 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 57 transitions. [2022-04-08 11:51:06,686 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:06,688 INFO L225 Difference]: With dead ends: 50 [2022-04-08 11:51:06,688 INFO L226 Difference]: Without dead ends: 46 [2022-04-08 11:51:06,688 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-08 11:51:06,689 INFO L913 BasicCegarLoop]: 28 mSDtfsCounter, 18 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-04-08 11:51:06,689 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 104 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-04-08 11:51:06,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-04-08 11:51:06,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2022-04-08 11:51:06,714 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 11:51:06,716 INFO L82 GeneralOperation]: Start isEquivalent. First operand 46 states. Second operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 11:51:06,717 INFO L74 IsIncluded]: Start isIncluded. First operand 46 states. Second operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 11:51:06,717 INFO L87 Difference]: Start difference. First operand 46 states. Second operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 11:51:06,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:06,728 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-04-08 11:51:06,728 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-04-08 11:51:06,729 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:51:06,729 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:51:06,730 INFO L74 IsIncluded]: Start isIncluded. First operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 46 states. [2022-04-08 11:51:06,732 INFO L87 Difference]: Start difference. First operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 46 states. [2022-04-08 11:51:06,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:06,735 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-04-08 11:51:06,735 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-04-08 11:51:06,735 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:51:06,738 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:51:06,738 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 11:51:06,741 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 11:51:06,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 11:51:06,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2022-04-08 11:51:06,743 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 26 [2022-04-08 11:51:06,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 11:51:06,744 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2022-04-08 11:51:06,744 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-08 11:51:06,744 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 39 states and 46 transitions. [2022-04-08 11:51:06,801 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:06,802 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2022-04-08 11:51:06,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-08 11:51:06,803 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 11:51:06,803 INFO L499 BasicCegarLoop]: trace histogram [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, 1] [2022-04-08 11:51:06,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-08 11:51:07,003 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:51:07,004 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 11:51:07,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 11:51:07,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1733722638, now seen corresponding path program 1 times [2022-04-08 11:51:07,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 11:51:07,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1674765097] [2022-04-08 11:51:07,005 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 11:51:07,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1733722638, now seen corresponding path program 2 times [2022-04-08 11:51:07,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 11:51:07,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852934437] [2022-04-08 11:51:07,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 11:51:07,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 11:51:07,029 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 11:51:07,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310212414] [2022-04-08 11:51:07,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 11:51:07,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:51:07,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 11:51:07,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 11:51:07,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-08 11:51:07,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 11:51:07,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 11:51:07,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-08 11:51:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 11:51:07,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 11:51:07,325 INFO L272 TraceCheckUtils]: 0: Hoare triple {1221#true} call ULTIMATE.init(); {1221#true} is VALID [2022-04-08 11:51:07,327 INFO L290 TraceCheckUtils]: 1: Hoare triple {1221#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {1229#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:07,327 INFO L290 TraceCheckUtils]: 2: Hoare triple {1229#(<= ~counter~0 0)} assume true; {1229#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:07,328 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1229#(<= ~counter~0 0)} {1221#true} #89#return; {1229#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:07,329 INFO L272 TraceCheckUtils]: 4: Hoare triple {1229#(<= ~counter~0 0)} call #t~ret5 := main(); {1229#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:07,330 INFO L290 TraceCheckUtils]: 5: Hoare triple {1229#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {1229#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:07,339 INFO L272 TraceCheckUtils]: 6: Hoare triple {1229#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {1229#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:07,339 INFO L290 TraceCheckUtils]: 7: Hoare triple {1229#(<= ~counter~0 0)} ~cond := #in~cond; {1229#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:07,340 INFO L290 TraceCheckUtils]: 8: Hoare triple {1229#(<= ~counter~0 0)} assume !(0 == ~cond); {1229#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:07,340 INFO L290 TraceCheckUtils]: 9: Hoare triple {1229#(<= ~counter~0 0)} assume true; {1229#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:07,341 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1229#(<= ~counter~0 0)} {1229#(<= ~counter~0 0)} #81#return; {1229#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:07,341 INFO L272 TraceCheckUtils]: 11: Hoare triple {1229#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {1229#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:07,342 INFO L290 TraceCheckUtils]: 12: Hoare triple {1229#(<= ~counter~0 0)} ~cond := #in~cond; {1229#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:07,342 INFO L290 TraceCheckUtils]: 13: Hoare triple {1229#(<= ~counter~0 0)} assume !(0 == ~cond); {1229#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:07,342 INFO L290 TraceCheckUtils]: 14: Hoare triple {1229#(<= ~counter~0 0)} assume true; {1229#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:07,343 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1229#(<= ~counter~0 0)} {1229#(<= ~counter~0 0)} #83#return; {1229#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:07,343 INFO L290 TraceCheckUtils]: 16: Hoare triple {1229#(<= ~counter~0 0)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {1229#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:07,344 INFO L290 TraceCheckUtils]: 17: Hoare triple {1229#(<= ~counter~0 0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1278#(<= ~counter~0 1)} is VALID [2022-04-08 11:51:07,345 INFO L290 TraceCheckUtils]: 18: Hoare triple {1278#(<= ~counter~0 1)} assume !!(#t~post3 < 20);havoc #t~post3; {1278#(<= ~counter~0 1)} is VALID [2022-04-08 11:51:07,345 INFO L290 TraceCheckUtils]: 19: Hoare triple {1278#(<= ~counter~0 1)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {1278#(<= ~counter~0 1)} is VALID [2022-04-08 11:51:07,346 INFO L290 TraceCheckUtils]: 20: Hoare triple {1278#(<= ~counter~0 1)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1288#(<= ~counter~0 2)} is VALID [2022-04-08 11:51:07,346 INFO L290 TraceCheckUtils]: 21: Hoare triple {1288#(<= ~counter~0 2)} assume !!(#t~post4 < 20);havoc #t~post4; {1288#(<= ~counter~0 2)} is VALID [2022-04-08 11:51:07,347 INFO L272 TraceCheckUtils]: 22: Hoare triple {1288#(<= ~counter~0 2)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1288#(<= ~counter~0 2)} is VALID [2022-04-08 11:51:07,347 INFO L290 TraceCheckUtils]: 23: Hoare triple {1288#(<= ~counter~0 2)} ~cond := #in~cond; {1288#(<= ~counter~0 2)} is VALID [2022-04-08 11:51:07,348 INFO L290 TraceCheckUtils]: 24: Hoare triple {1288#(<= ~counter~0 2)} assume !(0 == ~cond); {1288#(<= ~counter~0 2)} is VALID [2022-04-08 11:51:07,348 INFO L290 TraceCheckUtils]: 25: Hoare triple {1288#(<= ~counter~0 2)} assume true; {1288#(<= ~counter~0 2)} is VALID [2022-04-08 11:51:07,349 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {1288#(<= ~counter~0 2)} {1288#(<= ~counter~0 2)} #85#return; {1288#(<= ~counter~0 2)} is VALID [2022-04-08 11:51:07,349 INFO L290 TraceCheckUtils]: 27: Hoare triple {1288#(<= ~counter~0 2)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {1288#(<= ~counter~0 2)} is VALID [2022-04-08 11:51:07,350 INFO L290 TraceCheckUtils]: 28: Hoare triple {1288#(<= ~counter~0 2)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {1288#(<= ~counter~0 2)} is VALID [2022-04-08 11:51:07,350 INFO L290 TraceCheckUtils]: 29: Hoare triple {1288#(<= ~counter~0 2)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1316#(<= |main_#t~post4| 2)} is VALID [2022-04-08 11:51:07,351 INFO L290 TraceCheckUtils]: 30: Hoare triple {1316#(<= |main_#t~post4| 2)} assume !(#t~post4 < 20);havoc #t~post4; {1222#false} is VALID [2022-04-08 11:51:07,351 INFO L272 TraceCheckUtils]: 31: Hoare triple {1222#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1222#false} is VALID [2022-04-08 11:51:07,351 INFO L290 TraceCheckUtils]: 32: Hoare triple {1222#false} ~cond := #in~cond; {1222#false} is VALID [2022-04-08 11:51:07,351 INFO L290 TraceCheckUtils]: 33: Hoare triple {1222#false} assume 0 == ~cond; {1222#false} is VALID [2022-04-08 11:51:07,352 INFO L290 TraceCheckUtils]: 34: Hoare triple {1222#false} assume !false; {1222#false} is VALID [2022-04-08 11:51:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 11:51:07,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 11:51:07,636 INFO L290 TraceCheckUtils]: 34: Hoare triple {1222#false} assume !false; {1222#false} is VALID [2022-04-08 11:51:07,636 INFO L290 TraceCheckUtils]: 33: Hoare triple {1222#false} assume 0 == ~cond; {1222#false} is VALID [2022-04-08 11:51:07,636 INFO L290 TraceCheckUtils]: 32: Hoare triple {1222#false} ~cond := #in~cond; {1222#false} is VALID [2022-04-08 11:51:07,636 INFO L272 TraceCheckUtils]: 31: Hoare triple {1222#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1222#false} is VALID [2022-04-08 11:51:07,637 INFO L290 TraceCheckUtils]: 30: Hoare triple {1344#(< |main_#t~post4| 20)} assume !(#t~post4 < 20);havoc #t~post4; {1222#false} is VALID [2022-04-08 11:51:07,637 INFO L290 TraceCheckUtils]: 29: Hoare triple {1348#(< ~counter~0 20)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1344#(< |main_#t~post4| 20)} is VALID [2022-04-08 11:51:07,639 INFO L290 TraceCheckUtils]: 28: Hoare triple {1348#(< ~counter~0 20)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {1348#(< ~counter~0 20)} is VALID [2022-04-08 11:51:07,640 INFO L290 TraceCheckUtils]: 27: Hoare triple {1348#(< ~counter~0 20)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {1348#(< ~counter~0 20)} is VALID [2022-04-08 11:51:07,641 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {1221#true} {1348#(< ~counter~0 20)} #85#return; {1348#(< ~counter~0 20)} is VALID [2022-04-08 11:51:07,641 INFO L290 TraceCheckUtils]: 25: Hoare triple {1221#true} assume true; {1221#true} is VALID [2022-04-08 11:51:07,641 INFO L290 TraceCheckUtils]: 24: Hoare triple {1221#true} assume !(0 == ~cond); {1221#true} is VALID [2022-04-08 11:51:07,641 INFO L290 TraceCheckUtils]: 23: Hoare triple {1221#true} ~cond := #in~cond; {1221#true} is VALID [2022-04-08 11:51:07,641 INFO L272 TraceCheckUtils]: 22: Hoare triple {1348#(< ~counter~0 20)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1221#true} is VALID [2022-04-08 11:51:07,642 INFO L290 TraceCheckUtils]: 21: Hoare triple {1348#(< ~counter~0 20)} assume !!(#t~post4 < 20);havoc #t~post4; {1348#(< ~counter~0 20)} is VALID [2022-04-08 11:51:07,643 INFO L290 TraceCheckUtils]: 20: Hoare triple {1376#(< ~counter~0 19)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1348#(< ~counter~0 20)} is VALID [2022-04-08 11:51:07,643 INFO L290 TraceCheckUtils]: 19: Hoare triple {1376#(< ~counter~0 19)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {1376#(< ~counter~0 19)} is VALID [2022-04-08 11:51:07,644 INFO L290 TraceCheckUtils]: 18: Hoare triple {1376#(< ~counter~0 19)} assume !!(#t~post3 < 20);havoc #t~post3; {1376#(< ~counter~0 19)} is VALID [2022-04-08 11:51:07,645 INFO L290 TraceCheckUtils]: 17: Hoare triple {1386#(< ~counter~0 18)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1376#(< ~counter~0 19)} is VALID [2022-04-08 11:51:07,645 INFO L290 TraceCheckUtils]: 16: Hoare triple {1386#(< ~counter~0 18)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {1386#(< ~counter~0 18)} is VALID [2022-04-08 11:51:07,646 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1221#true} {1386#(< ~counter~0 18)} #83#return; {1386#(< ~counter~0 18)} is VALID [2022-04-08 11:51:07,646 INFO L290 TraceCheckUtils]: 14: Hoare triple {1221#true} assume true; {1221#true} is VALID [2022-04-08 11:51:07,646 INFO L290 TraceCheckUtils]: 13: Hoare triple {1221#true} assume !(0 == ~cond); {1221#true} is VALID [2022-04-08 11:51:07,648 INFO L290 TraceCheckUtils]: 12: Hoare triple {1221#true} ~cond := #in~cond; {1221#true} is VALID [2022-04-08 11:51:07,648 INFO L272 TraceCheckUtils]: 11: Hoare triple {1386#(< ~counter~0 18)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {1221#true} is VALID [2022-04-08 11:51:07,649 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1221#true} {1386#(< ~counter~0 18)} #81#return; {1386#(< ~counter~0 18)} is VALID [2022-04-08 11:51:07,649 INFO L290 TraceCheckUtils]: 9: Hoare triple {1221#true} assume true; {1221#true} is VALID [2022-04-08 11:51:07,649 INFO L290 TraceCheckUtils]: 8: Hoare triple {1221#true} assume !(0 == ~cond); {1221#true} is VALID [2022-04-08 11:51:07,649 INFO L290 TraceCheckUtils]: 7: Hoare triple {1221#true} ~cond := #in~cond; {1221#true} is VALID [2022-04-08 11:51:07,649 INFO L272 TraceCheckUtils]: 6: Hoare triple {1386#(< ~counter~0 18)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {1221#true} is VALID [2022-04-08 11:51:07,650 INFO L290 TraceCheckUtils]: 5: Hoare triple {1386#(< ~counter~0 18)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {1386#(< ~counter~0 18)} is VALID [2022-04-08 11:51:07,650 INFO L272 TraceCheckUtils]: 4: Hoare triple {1386#(< ~counter~0 18)} call #t~ret5 := main(); {1386#(< ~counter~0 18)} is VALID [2022-04-08 11:51:07,651 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1386#(< ~counter~0 18)} {1221#true} #89#return; {1386#(< ~counter~0 18)} is VALID [2022-04-08 11:51:07,651 INFO L290 TraceCheckUtils]: 2: Hoare triple {1386#(< ~counter~0 18)} assume true; {1386#(< ~counter~0 18)} is VALID [2022-04-08 11:51:07,652 INFO L290 TraceCheckUtils]: 1: Hoare triple {1221#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {1386#(< ~counter~0 18)} is VALID [2022-04-08 11:51:07,652 INFO L272 TraceCheckUtils]: 0: Hoare triple {1221#true} call ULTIMATE.init(); {1221#true} is VALID [2022-04-08 11:51:07,653 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 11:51:07,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 11:51:07,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852934437] [2022-04-08 11:51:07,653 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 11:51:07,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310212414] [2022-04-08 11:51:07,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310212414] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 11:51:07,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-08 11:51:07,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-04-08 11:51:07,654 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 11:51:07,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1674765097] [2022-04-08 11:51:07,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1674765097] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 11:51:07,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 11:51:07,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 11:51:07,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251069414] [2022-04-08 11:51:07,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 11:51:07,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2022-04-08 11:51:07,659 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 11:51:07,660 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 11:51:07,692 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:07,692 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 11:51:07,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 11:51:07,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 11:51:07,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-04-08 11:51:07,693 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 11:51:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:07,976 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2022-04-08 11:51:07,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 11:51:07,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2022-04-08 11:51:07,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 11:51:07,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 11:51:07,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2022-04-08 11:51:07,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 11:51:07,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2022-04-08 11:51:07,981 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 63 transitions. [2022-04-08 11:51:08,038 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:08,039 INFO L225 Difference]: With dead ends: 64 [2022-04-08 11:51:08,039 INFO L226 Difference]: Without dead ends: 57 [2022-04-08 11:51:08,040 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-04-08 11:51:08,040 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 14 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 11:51:08,041 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 115 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 11:51:08,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-04-08 11:51:08,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2022-04-08 11:51:08,094 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 11:51:08,095 INFO L82 GeneralOperation]: Start isEquivalent. First operand 57 states. Second operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 11:51:08,095 INFO L74 IsIncluded]: Start isIncluded. First operand 57 states. Second operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 11:51:08,095 INFO L87 Difference]: Start difference. First operand 57 states. Second operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 11:51:08,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:08,097 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-04-08 11:51:08,097 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-04-08 11:51:08,098 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:51:08,098 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:51:08,098 INFO L74 IsIncluded]: Start isIncluded. First operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 57 states. [2022-04-08 11:51:08,098 INFO L87 Difference]: Start difference. First operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 57 states. [2022-04-08 11:51:08,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:08,100 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-04-08 11:51:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-04-08 11:51:08,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:51:08,101 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:51:08,101 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 11:51:08,101 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 11:51:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 11:51:08,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2022-04-08 11:51:08,110 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 35 [2022-04-08 11:51:08,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 11:51:08,110 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2022-04-08 11:51:08,110 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 11:51:08,110 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 51 states and 60 transitions. [2022-04-08 11:51:08,182 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 60 edges. 60 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:08,183 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2022-04-08 11:51:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-08 11:51:08,185 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 11:51:08,185 INFO L499 BasicCegarLoop]: trace histogram [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] [2022-04-08 11:51:08,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-08 11:51:08,385 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:51:08,386 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 11:51:08,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 11:51:08,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1731935178, now seen corresponding path program 1 times [2022-04-08 11:51:08,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 11:51:08,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1136240404] [2022-04-08 11:51:08,387 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 11:51:08,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1731935178, now seen corresponding path program 2 times [2022-04-08 11:51:08,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 11:51:08,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811532813] [2022-04-08 11:51:08,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 11:51:08,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 11:51:08,410 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 11:51:08,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332222732] [2022-04-08 11:51:08,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 11:51:08,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:51:08,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 11:51:08,414 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 11:51:08,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-08 11:51:08,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 11:51:08,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 11:51:08,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-08 11:51:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 11:51:08,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 11:51:08,552 INFO L272 TraceCheckUtils]: 0: Hoare triple {1786#true} call ULTIMATE.init(); {1786#true} is VALID [2022-04-08 11:51:08,553 INFO L290 TraceCheckUtils]: 1: Hoare triple {1786#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {1786#true} is VALID [2022-04-08 11:51:08,553 INFO L290 TraceCheckUtils]: 2: Hoare triple {1786#true} assume true; {1786#true} is VALID [2022-04-08 11:51:08,553 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1786#true} {1786#true} #89#return; {1786#true} is VALID [2022-04-08 11:51:08,553 INFO L272 TraceCheckUtils]: 4: Hoare triple {1786#true} call #t~ret5 := main(); {1786#true} is VALID [2022-04-08 11:51:08,553 INFO L290 TraceCheckUtils]: 5: Hoare triple {1786#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {1786#true} is VALID [2022-04-08 11:51:08,553 INFO L272 TraceCheckUtils]: 6: Hoare triple {1786#true} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {1786#true} is VALID [2022-04-08 11:51:08,553 INFO L290 TraceCheckUtils]: 7: Hoare triple {1786#true} ~cond := #in~cond; {1786#true} is VALID [2022-04-08 11:51:08,554 INFO L290 TraceCheckUtils]: 8: Hoare triple {1786#true} assume !(0 == ~cond); {1786#true} is VALID [2022-04-08 11:51:08,554 INFO L290 TraceCheckUtils]: 9: Hoare triple {1786#true} assume true; {1786#true} is VALID [2022-04-08 11:51:08,554 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1786#true} {1786#true} #81#return; {1786#true} is VALID [2022-04-08 11:51:08,554 INFO L272 TraceCheckUtils]: 11: Hoare triple {1786#true} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {1786#true} is VALID [2022-04-08 11:51:08,554 INFO L290 TraceCheckUtils]: 12: Hoare triple {1786#true} ~cond := #in~cond; {1786#true} is VALID [2022-04-08 11:51:08,554 INFO L290 TraceCheckUtils]: 13: Hoare triple {1786#true} assume !(0 == ~cond); {1786#true} is VALID [2022-04-08 11:51:08,554 INFO L290 TraceCheckUtils]: 14: Hoare triple {1786#true} assume true; {1786#true} is VALID [2022-04-08 11:51:08,555 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1786#true} {1786#true} #83#return; {1786#true} is VALID [2022-04-08 11:51:08,555 INFO L290 TraceCheckUtils]: 16: Hoare triple {1786#true} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-08 11:51:08,556 INFO L290 TraceCheckUtils]: 17: Hoare triple {1839#(= main_~B~0 main_~b~0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-08 11:51:08,560 INFO L290 TraceCheckUtils]: 18: Hoare triple {1839#(= main_~B~0 main_~b~0)} assume !!(#t~post3 < 20);havoc #t~post3; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-08 11:51:08,561 INFO L290 TraceCheckUtils]: 19: Hoare triple {1839#(= main_~B~0 main_~b~0)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-08 11:51:08,561 INFO L290 TraceCheckUtils]: 20: Hoare triple {1839#(= main_~B~0 main_~b~0)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-08 11:51:08,562 INFO L290 TraceCheckUtils]: 21: Hoare triple {1839#(= main_~B~0 main_~b~0)} assume !!(#t~post4 < 20);havoc #t~post4; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-08 11:51:08,562 INFO L272 TraceCheckUtils]: 22: Hoare triple {1839#(= main_~B~0 main_~b~0)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1786#true} is VALID [2022-04-08 11:51:08,562 INFO L290 TraceCheckUtils]: 23: Hoare triple {1786#true} ~cond := #in~cond; {1786#true} is VALID [2022-04-08 11:51:08,562 INFO L290 TraceCheckUtils]: 24: Hoare triple {1786#true} assume !(0 == ~cond); {1786#true} is VALID [2022-04-08 11:51:08,563 INFO L290 TraceCheckUtils]: 25: Hoare triple {1786#true} assume true; {1786#true} is VALID [2022-04-08 11:51:08,563 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {1786#true} {1839#(= main_~B~0 main_~b~0)} #85#return; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-08 11:51:08,564 INFO L290 TraceCheckUtils]: 27: Hoare triple {1839#(= main_~B~0 main_~b~0)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {1787#false} is VALID [2022-04-08 11:51:08,564 INFO L290 TraceCheckUtils]: 28: Hoare triple {1787#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {1787#false} is VALID [2022-04-08 11:51:08,564 INFO L290 TraceCheckUtils]: 29: Hoare triple {1787#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1787#false} is VALID [2022-04-08 11:51:08,564 INFO L290 TraceCheckUtils]: 30: Hoare triple {1787#false} assume !!(#t~post4 < 20);havoc #t~post4; {1787#false} is VALID [2022-04-08 11:51:08,565 INFO L272 TraceCheckUtils]: 31: Hoare triple {1787#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1787#false} is VALID [2022-04-08 11:51:08,565 INFO L290 TraceCheckUtils]: 32: Hoare triple {1787#false} ~cond := #in~cond; {1787#false} is VALID [2022-04-08 11:51:08,565 INFO L290 TraceCheckUtils]: 33: Hoare triple {1787#false} assume 0 == ~cond; {1787#false} is VALID [2022-04-08 11:51:08,565 INFO L290 TraceCheckUtils]: 34: Hoare triple {1787#false} assume !false; {1787#false} is VALID [2022-04-08 11:51:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 11:51:08,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 11:51:08,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 11:51:08,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811532813] [2022-04-08 11:51:08,566 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 11:51:08,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332222732] [2022-04-08 11:51:08,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332222732] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 11:51:08,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 11:51:08,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 11:51:08,566 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 11:51:08,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1136240404] [2022-04-08 11:51:08,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1136240404] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 11:51:08,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 11:51:08,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 11:51:08,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280788746] [2022-04-08 11:51:08,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 11:51:08,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-04-08 11:51:08,568 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 11:51:08,568 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 11:51:08,598 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:08,598 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 11:51:08,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 11:51:08,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 11:51:08,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 11:51:08,599 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 11:51:08,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:08,733 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2022-04-08 11:51:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 11:51:08,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-04-08 11:51:08,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 11:51:08,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 11:51:08,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2022-04-08 11:51:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 11:51:08,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2022-04-08 11:51:08,737 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 58 transitions. [2022-04-08 11:51:08,785 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 58 edges. 58 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:08,787 INFO L225 Difference]: With dead ends: 72 [2022-04-08 11:51:08,787 INFO L226 Difference]: Without dead ends: 40 [2022-04-08 11:51:08,787 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 11:51:08,788 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 11:51:08,788 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 11:51:08,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-04-08 11:51:08,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-04-08 11:51:08,810 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 11:51:08,810 INFO L82 GeneralOperation]: Start isEquivalent. First operand 40 states. Second operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 11:51:08,811 INFO L74 IsIncluded]: Start isIncluded. First operand 40 states. Second operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 11:51:08,811 INFO L87 Difference]: Start difference. First operand 40 states. Second operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 11:51:08,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:08,812 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-04-08 11:51:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2022-04-08 11:51:08,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:51:08,813 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:51:08,813 INFO L74 IsIncluded]: Start isIncluded. First operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 40 states. [2022-04-08 11:51:08,813 INFO L87 Difference]: Start difference. First operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 40 states. [2022-04-08 11:51:08,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:08,815 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-04-08 11:51:08,815 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2022-04-08 11:51:08,815 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:51:08,815 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:51:08,815 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 11:51:08,815 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 11:51:08,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 11:51:08,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2022-04-08 11:51:08,817 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 35 [2022-04-08 11:51:08,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 11:51:08,817 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2022-04-08 11:51:08,817 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 11:51:08,817 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 40 states and 47 transitions. [2022-04-08 11:51:08,874 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 47 edges. 47 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:08,875 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2022-04-08 11:51:08,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-08 11:51:08,875 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 11:51:08,876 INFO L499 BasicCegarLoop]: trace histogram [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, 1] [2022-04-08 11:51:08,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-08 11:51:09,083 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:51:09,084 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 11:51:09,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 11:51:09,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1874551443, now seen corresponding path program 1 times [2022-04-08 11:51:09,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 11:51:09,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [688484609] [2022-04-08 11:51:09,085 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 11:51:09,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1874551443, now seen corresponding path program 2 times [2022-04-08 11:51:09,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 11:51:09,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860027306] [2022-04-08 11:51:09,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 11:51:09,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 11:51:09,101 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 11:51:09,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468221589] [2022-04-08 11:51:09,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 11:51:09,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:51:09,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 11:51:09,108 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 11:51:09,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-08 11:51:09,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 11:51:09,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 11:51:09,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-08 11:51:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 11:51:09,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 11:51:09,356 INFO L272 TraceCheckUtils]: 0: Hoare triple {2197#true} call ULTIMATE.init(); {2197#true} is VALID [2022-04-08 11:51:09,356 INFO L290 TraceCheckUtils]: 1: Hoare triple {2197#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {2205#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:09,357 INFO L290 TraceCheckUtils]: 2: Hoare triple {2205#(<= ~counter~0 0)} assume true; {2205#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:09,357 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2205#(<= ~counter~0 0)} {2197#true} #89#return; {2205#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:09,357 INFO L272 TraceCheckUtils]: 4: Hoare triple {2205#(<= ~counter~0 0)} call #t~ret5 := main(); {2205#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:09,358 INFO L290 TraceCheckUtils]: 5: Hoare triple {2205#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {2205#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:09,358 INFO L272 TraceCheckUtils]: 6: Hoare triple {2205#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {2205#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:09,359 INFO L290 TraceCheckUtils]: 7: Hoare triple {2205#(<= ~counter~0 0)} ~cond := #in~cond; {2205#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:09,359 INFO L290 TraceCheckUtils]: 8: Hoare triple {2205#(<= ~counter~0 0)} assume !(0 == ~cond); {2205#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:09,359 INFO L290 TraceCheckUtils]: 9: Hoare triple {2205#(<= ~counter~0 0)} assume true; {2205#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:09,360 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {2205#(<= ~counter~0 0)} {2205#(<= ~counter~0 0)} #81#return; {2205#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:09,360 INFO L272 TraceCheckUtils]: 11: Hoare triple {2205#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {2205#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:09,360 INFO L290 TraceCheckUtils]: 12: Hoare triple {2205#(<= ~counter~0 0)} ~cond := #in~cond; {2205#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:09,361 INFO L290 TraceCheckUtils]: 13: Hoare triple {2205#(<= ~counter~0 0)} assume !(0 == ~cond); {2205#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:09,361 INFO L290 TraceCheckUtils]: 14: Hoare triple {2205#(<= ~counter~0 0)} assume true; {2205#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:09,362 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {2205#(<= ~counter~0 0)} {2205#(<= ~counter~0 0)} #83#return; {2205#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:09,362 INFO L290 TraceCheckUtils]: 16: Hoare triple {2205#(<= ~counter~0 0)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2205#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:09,363 INFO L290 TraceCheckUtils]: 17: Hoare triple {2205#(<= ~counter~0 0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2254#(<= ~counter~0 1)} is VALID [2022-04-08 11:51:09,363 INFO L290 TraceCheckUtils]: 18: Hoare triple {2254#(<= ~counter~0 1)} assume !!(#t~post3 < 20);havoc #t~post3; {2254#(<= ~counter~0 1)} is VALID [2022-04-08 11:51:09,363 INFO L290 TraceCheckUtils]: 19: Hoare triple {2254#(<= ~counter~0 1)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2254#(<= ~counter~0 1)} is VALID [2022-04-08 11:51:09,364 INFO L290 TraceCheckUtils]: 20: Hoare triple {2254#(<= ~counter~0 1)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2264#(<= |main_#t~post3| 1)} is VALID [2022-04-08 11:51:09,364 INFO L290 TraceCheckUtils]: 21: Hoare triple {2264#(<= |main_#t~post3| 1)} assume !(#t~post3 < 20);havoc #t~post3; {2198#false} is VALID [2022-04-08 11:51:09,364 INFO L290 TraceCheckUtils]: 22: Hoare triple {2198#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2198#false} is VALID [2022-04-08 11:51:09,364 INFO L290 TraceCheckUtils]: 23: Hoare triple {2198#false} assume !!(#t~post4 < 20);havoc #t~post4; {2198#false} is VALID [2022-04-08 11:51:09,364 INFO L272 TraceCheckUtils]: 24: Hoare triple {2198#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2198#false} is VALID [2022-04-08 11:51:09,365 INFO L290 TraceCheckUtils]: 25: Hoare triple {2198#false} ~cond := #in~cond; {2198#false} is VALID [2022-04-08 11:51:09,365 INFO L290 TraceCheckUtils]: 26: Hoare triple {2198#false} assume !(0 == ~cond); {2198#false} is VALID [2022-04-08 11:51:09,365 INFO L290 TraceCheckUtils]: 27: Hoare triple {2198#false} assume true; {2198#false} is VALID [2022-04-08 11:51:09,365 INFO L284 TraceCheckUtils]: 28: Hoare quadruple {2198#false} {2198#false} #85#return; {2198#false} is VALID [2022-04-08 11:51:09,365 INFO L290 TraceCheckUtils]: 29: Hoare triple {2198#false} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {2198#false} is VALID [2022-04-08 11:51:09,365 INFO L290 TraceCheckUtils]: 30: Hoare triple {2198#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2198#false} is VALID [2022-04-08 11:51:09,365 INFO L290 TraceCheckUtils]: 31: Hoare triple {2198#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2198#false} is VALID [2022-04-08 11:51:09,366 INFO L290 TraceCheckUtils]: 32: Hoare triple {2198#false} assume !(#t~post4 < 20);havoc #t~post4; {2198#false} is VALID [2022-04-08 11:51:09,366 INFO L272 TraceCheckUtils]: 33: Hoare triple {2198#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2198#false} is VALID [2022-04-08 11:51:09,366 INFO L290 TraceCheckUtils]: 34: Hoare triple {2198#false} ~cond := #in~cond; {2198#false} is VALID [2022-04-08 11:51:09,366 INFO L290 TraceCheckUtils]: 35: Hoare triple {2198#false} assume 0 == ~cond; {2198#false} is VALID [2022-04-08 11:51:09,366 INFO L290 TraceCheckUtils]: 36: Hoare triple {2198#false} assume !false; {2198#false} is VALID [2022-04-08 11:51:09,366 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-04-08 11:51:09,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 11:51:09,596 INFO L290 TraceCheckUtils]: 36: Hoare triple {2198#false} assume !false; {2198#false} is VALID [2022-04-08 11:51:09,596 INFO L290 TraceCheckUtils]: 35: Hoare triple {2198#false} assume 0 == ~cond; {2198#false} is VALID [2022-04-08 11:51:09,597 INFO L290 TraceCheckUtils]: 34: Hoare triple {2198#false} ~cond := #in~cond; {2198#false} is VALID [2022-04-08 11:51:09,597 INFO L272 TraceCheckUtils]: 33: Hoare triple {2198#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2198#false} is VALID [2022-04-08 11:51:09,597 INFO L290 TraceCheckUtils]: 32: Hoare triple {2198#false} assume !(#t~post4 < 20);havoc #t~post4; {2198#false} is VALID [2022-04-08 11:51:09,597 INFO L290 TraceCheckUtils]: 31: Hoare triple {2198#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2198#false} is VALID [2022-04-08 11:51:09,597 INFO L290 TraceCheckUtils]: 30: Hoare triple {2198#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2198#false} is VALID [2022-04-08 11:51:09,597 INFO L290 TraceCheckUtils]: 29: Hoare triple {2198#false} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {2198#false} is VALID [2022-04-08 11:51:09,597 INFO L284 TraceCheckUtils]: 28: Hoare quadruple {2197#true} {2198#false} #85#return; {2198#false} is VALID [2022-04-08 11:51:09,597 INFO L290 TraceCheckUtils]: 27: Hoare triple {2197#true} assume true; {2197#true} is VALID [2022-04-08 11:51:09,598 INFO L290 TraceCheckUtils]: 26: Hoare triple {2197#true} assume !(0 == ~cond); {2197#true} is VALID [2022-04-08 11:51:09,598 INFO L290 TraceCheckUtils]: 25: Hoare triple {2197#true} ~cond := #in~cond; {2197#true} is VALID [2022-04-08 11:51:09,598 INFO L272 TraceCheckUtils]: 24: Hoare triple {2198#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2197#true} is VALID [2022-04-08 11:51:09,598 INFO L290 TraceCheckUtils]: 23: Hoare triple {2198#false} assume !!(#t~post4 < 20);havoc #t~post4; {2198#false} is VALID [2022-04-08 11:51:09,598 INFO L290 TraceCheckUtils]: 22: Hoare triple {2198#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2198#false} is VALID [2022-04-08 11:51:09,602 INFO L290 TraceCheckUtils]: 21: Hoare triple {2358#(< |main_#t~post3| 20)} assume !(#t~post3 < 20);havoc #t~post3; {2198#false} is VALID [2022-04-08 11:51:09,603 INFO L290 TraceCheckUtils]: 20: Hoare triple {2362#(< ~counter~0 20)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2358#(< |main_#t~post3| 20)} is VALID [2022-04-08 11:51:09,604 INFO L290 TraceCheckUtils]: 19: Hoare triple {2362#(< ~counter~0 20)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2362#(< ~counter~0 20)} is VALID [2022-04-08 11:51:09,604 INFO L290 TraceCheckUtils]: 18: Hoare triple {2362#(< ~counter~0 20)} assume !!(#t~post3 < 20);havoc #t~post3; {2362#(< ~counter~0 20)} is VALID [2022-04-08 11:51:09,605 INFO L290 TraceCheckUtils]: 17: Hoare triple {2372#(< ~counter~0 19)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2362#(< ~counter~0 20)} is VALID [2022-04-08 11:51:09,605 INFO L290 TraceCheckUtils]: 16: Hoare triple {2372#(< ~counter~0 19)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2372#(< ~counter~0 19)} is VALID [2022-04-08 11:51:09,606 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {2197#true} {2372#(< ~counter~0 19)} #83#return; {2372#(< ~counter~0 19)} is VALID [2022-04-08 11:51:09,606 INFO L290 TraceCheckUtils]: 14: Hoare triple {2197#true} assume true; {2197#true} is VALID [2022-04-08 11:51:09,606 INFO L290 TraceCheckUtils]: 13: Hoare triple {2197#true} assume !(0 == ~cond); {2197#true} is VALID [2022-04-08 11:51:09,606 INFO L290 TraceCheckUtils]: 12: Hoare triple {2197#true} ~cond := #in~cond; {2197#true} is VALID [2022-04-08 11:51:09,606 INFO L272 TraceCheckUtils]: 11: Hoare triple {2372#(< ~counter~0 19)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {2197#true} is VALID [2022-04-08 11:51:09,607 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {2197#true} {2372#(< ~counter~0 19)} #81#return; {2372#(< ~counter~0 19)} is VALID [2022-04-08 11:51:09,607 INFO L290 TraceCheckUtils]: 9: Hoare triple {2197#true} assume true; {2197#true} is VALID [2022-04-08 11:51:09,607 INFO L290 TraceCheckUtils]: 8: Hoare triple {2197#true} assume !(0 == ~cond); {2197#true} is VALID [2022-04-08 11:51:09,607 INFO L290 TraceCheckUtils]: 7: Hoare triple {2197#true} ~cond := #in~cond; {2197#true} is VALID [2022-04-08 11:51:09,607 INFO L272 TraceCheckUtils]: 6: Hoare triple {2372#(< ~counter~0 19)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {2197#true} is VALID [2022-04-08 11:51:09,608 INFO L290 TraceCheckUtils]: 5: Hoare triple {2372#(< ~counter~0 19)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {2372#(< ~counter~0 19)} is VALID [2022-04-08 11:51:09,608 INFO L272 TraceCheckUtils]: 4: Hoare triple {2372#(< ~counter~0 19)} call #t~ret5 := main(); {2372#(< ~counter~0 19)} is VALID [2022-04-08 11:51:09,609 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2372#(< ~counter~0 19)} {2197#true} #89#return; {2372#(< ~counter~0 19)} is VALID [2022-04-08 11:51:09,609 INFO L290 TraceCheckUtils]: 2: Hoare triple {2372#(< ~counter~0 19)} assume true; {2372#(< ~counter~0 19)} is VALID [2022-04-08 11:51:09,610 INFO L290 TraceCheckUtils]: 1: Hoare triple {2197#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {2372#(< ~counter~0 19)} is VALID [2022-04-08 11:51:09,610 INFO L272 TraceCheckUtils]: 0: Hoare triple {2197#true} call ULTIMATE.init(); {2197#true} is VALID [2022-04-08 11:51:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-04-08 11:51:09,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 11:51:09,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860027306] [2022-04-08 11:51:09,613 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 11:51:09,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468221589] [2022-04-08 11:51:09,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468221589] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 11:51:09,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-08 11:51:09,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-04-08 11:51:09,613 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 11:51:09,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [688484609] [2022-04-08 11:51:09,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [688484609] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 11:51:09,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 11:51:09,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 11:51:09,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695566110] [2022-04-08 11:51:09,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 11:51:09,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2022-04-08 11:51:09,615 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 11:51:09,615 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 11:51:09,653 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:09,654 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 11:51:09,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 11:51:09,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 11:51:09,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-08 11:51:09,655 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 11:51:09,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:09,814 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2022-04-08 11:51:09,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 11:51:09,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2022-04-08 11:51:09,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 11:51:09,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 11:51:09,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 55 transitions. [2022-04-08 11:51:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 11:51:09,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 55 transitions. [2022-04-08 11:51:09,817 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 55 transitions. [2022-04-08 11:51:09,861 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:09,862 INFO L225 Difference]: With dead ends: 63 [2022-04-08 11:51:09,863 INFO L226 Difference]: Without dead ends: 42 [2022-04-08 11:51:09,863 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-04-08 11:51:09,864 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 11:51:09,864 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 82 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 11:51:09,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-04-08 11:51:09,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-04-08 11:51:09,898 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 11:51:09,898 INFO L82 GeneralOperation]: Start isEquivalent. First operand 42 states. Second operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 11:51:09,898 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 11:51:09,898 INFO L87 Difference]: Start difference. First operand 42 states. Second operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 11:51:09,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:09,900 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2022-04-08 11:51:09,900 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-04-08 11:51:09,900 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:51:09,900 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:51:09,900 INFO L74 IsIncluded]: Start isIncluded. First operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 42 states. [2022-04-08 11:51:09,901 INFO L87 Difference]: Start difference. First operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 42 states. [2022-04-08 11:51:09,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:09,902 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2022-04-08 11:51:09,902 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-04-08 11:51:09,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:51:09,902 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:51:09,902 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 11:51:09,902 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 11:51:09,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 11:51:09,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-04-08 11:51:09,904 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 37 [2022-04-08 11:51:09,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 11:51:09,904 INFO L478 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-04-08 11:51:09,904 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 11:51:09,904 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 42 states and 49 transitions. [2022-04-08 11:51:09,963 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:09,963 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-04-08 11:51:09,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-08 11:51:09,964 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 11:51:09,964 INFO L499 BasicCegarLoop]: trace histogram [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, 1] [2022-04-08 11:51:09,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-04-08 11:51:10,164 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:51:10,165 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 11:51:10,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 11:51:10,165 INFO L85 PathProgramCache]: Analyzing trace with hash 815990494, now seen corresponding path program 1 times [2022-04-08 11:51:10,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 11:51:10,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [196007771] [2022-04-08 11:51:10,166 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 11:51:10,166 INFO L85 PathProgramCache]: Analyzing trace with hash 815990494, now seen corresponding path program 2 times [2022-04-08 11:51:10,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 11:51:10,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082948084] [2022-04-08 11:51:10,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 11:51:10,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 11:51:10,186 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 11:51:10,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755676311] [2022-04-08 11:51:10,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 11:51:10,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:51:10,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 11:51:10,198 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 11:51:10,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-08 11:51:10,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 11:51:10,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 11:51:10,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-08 11:51:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 11:51:10,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 11:51:10,534 INFO L272 TraceCheckUtils]: 0: Hoare triple {2722#true} call ULTIMATE.init(); {2722#true} is VALID [2022-04-08 11:51:10,535 INFO L290 TraceCheckUtils]: 1: Hoare triple {2722#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {2730#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:10,535 INFO L290 TraceCheckUtils]: 2: Hoare triple {2730#(<= ~counter~0 0)} assume true; {2730#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:10,535 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2730#(<= ~counter~0 0)} {2722#true} #89#return; {2730#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:10,536 INFO L272 TraceCheckUtils]: 4: Hoare triple {2730#(<= ~counter~0 0)} call #t~ret5 := main(); {2730#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:10,536 INFO L290 TraceCheckUtils]: 5: Hoare triple {2730#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {2730#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:10,537 INFO L272 TraceCheckUtils]: 6: Hoare triple {2730#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {2730#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:10,537 INFO L290 TraceCheckUtils]: 7: Hoare triple {2730#(<= ~counter~0 0)} ~cond := #in~cond; {2730#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:10,537 INFO L290 TraceCheckUtils]: 8: Hoare triple {2730#(<= ~counter~0 0)} assume !(0 == ~cond); {2730#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:10,538 INFO L290 TraceCheckUtils]: 9: Hoare triple {2730#(<= ~counter~0 0)} assume true; {2730#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:10,538 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {2730#(<= ~counter~0 0)} {2730#(<= ~counter~0 0)} #81#return; {2730#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:10,538 INFO L272 TraceCheckUtils]: 11: Hoare triple {2730#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {2730#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:10,539 INFO L290 TraceCheckUtils]: 12: Hoare triple {2730#(<= ~counter~0 0)} ~cond := #in~cond; {2730#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:10,539 INFO L290 TraceCheckUtils]: 13: Hoare triple {2730#(<= ~counter~0 0)} assume !(0 == ~cond); {2730#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:10,541 INFO L290 TraceCheckUtils]: 14: Hoare triple {2730#(<= ~counter~0 0)} assume true; {2730#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:10,541 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {2730#(<= ~counter~0 0)} {2730#(<= ~counter~0 0)} #83#return; {2730#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:10,541 INFO L290 TraceCheckUtils]: 16: Hoare triple {2730#(<= ~counter~0 0)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2730#(<= ~counter~0 0)} is VALID [2022-04-08 11:51:10,542 INFO L290 TraceCheckUtils]: 17: Hoare triple {2730#(<= ~counter~0 0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2779#(<= ~counter~0 1)} is VALID [2022-04-08 11:51:10,543 INFO L290 TraceCheckUtils]: 18: Hoare triple {2779#(<= ~counter~0 1)} assume !!(#t~post3 < 20);havoc #t~post3; {2779#(<= ~counter~0 1)} is VALID [2022-04-08 11:51:10,543 INFO L290 TraceCheckUtils]: 19: Hoare triple {2779#(<= ~counter~0 1)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2779#(<= ~counter~0 1)} is VALID [2022-04-08 11:51:10,548 INFO L290 TraceCheckUtils]: 20: Hoare triple {2779#(<= ~counter~0 1)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2789#(<= ~counter~0 2)} is VALID [2022-04-08 11:51:10,548 INFO L290 TraceCheckUtils]: 21: Hoare triple {2789#(<= ~counter~0 2)} assume !!(#t~post3 < 20);havoc #t~post3; {2789#(<= ~counter~0 2)} is VALID [2022-04-08 11:51:10,549 INFO L290 TraceCheckUtils]: 22: Hoare triple {2789#(<= ~counter~0 2)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {2789#(<= ~counter~0 2)} is VALID [2022-04-08 11:51:10,549 INFO L290 TraceCheckUtils]: 23: Hoare triple {2789#(<= ~counter~0 2)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2799#(<= ~counter~0 3)} is VALID [2022-04-08 11:51:10,550 INFO L290 TraceCheckUtils]: 24: Hoare triple {2799#(<= ~counter~0 3)} assume !!(#t~post4 < 20);havoc #t~post4; {2799#(<= ~counter~0 3)} is VALID [2022-04-08 11:51:10,551 INFO L272 TraceCheckUtils]: 25: Hoare triple {2799#(<= ~counter~0 3)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2799#(<= ~counter~0 3)} is VALID [2022-04-08 11:51:10,552 INFO L290 TraceCheckUtils]: 26: Hoare triple {2799#(<= ~counter~0 3)} ~cond := #in~cond; {2799#(<= ~counter~0 3)} is VALID [2022-04-08 11:51:10,552 INFO L290 TraceCheckUtils]: 27: Hoare triple {2799#(<= ~counter~0 3)} assume !(0 == ~cond); {2799#(<= ~counter~0 3)} is VALID [2022-04-08 11:51:10,552 INFO L290 TraceCheckUtils]: 28: Hoare triple {2799#(<= ~counter~0 3)} assume true; {2799#(<= ~counter~0 3)} is VALID [2022-04-08 11:51:10,553 INFO L284 TraceCheckUtils]: 29: Hoare quadruple {2799#(<= ~counter~0 3)} {2799#(<= ~counter~0 3)} #85#return; {2799#(<= ~counter~0 3)} is VALID [2022-04-08 11:51:10,553 INFO L290 TraceCheckUtils]: 30: Hoare triple {2799#(<= ~counter~0 3)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {2799#(<= ~counter~0 3)} is VALID [2022-04-08 11:51:10,554 INFO L290 TraceCheckUtils]: 31: Hoare triple {2799#(<= ~counter~0 3)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2799#(<= ~counter~0 3)} is VALID [2022-04-08 11:51:10,554 INFO L290 TraceCheckUtils]: 32: Hoare triple {2799#(<= ~counter~0 3)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2827#(<= |main_#t~post4| 3)} is VALID [2022-04-08 11:51:10,555 INFO L290 TraceCheckUtils]: 33: Hoare triple {2827#(<= |main_#t~post4| 3)} assume !(#t~post4 < 20);havoc #t~post4; {2723#false} is VALID [2022-04-08 11:51:10,555 INFO L272 TraceCheckUtils]: 34: Hoare triple {2723#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2723#false} is VALID [2022-04-08 11:51:10,555 INFO L290 TraceCheckUtils]: 35: Hoare triple {2723#false} ~cond := #in~cond; {2723#false} is VALID [2022-04-08 11:51:10,555 INFO L290 TraceCheckUtils]: 36: Hoare triple {2723#false} assume 0 == ~cond; {2723#false} is VALID [2022-04-08 11:51:10,555 INFO L290 TraceCheckUtils]: 37: Hoare triple {2723#false} assume !false; {2723#false} is VALID [2022-04-08 11:51:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 11:51:10,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 11:51:10,847 INFO L290 TraceCheckUtils]: 37: Hoare triple {2723#false} assume !false; {2723#false} is VALID [2022-04-08 11:51:10,848 INFO L290 TraceCheckUtils]: 36: Hoare triple {2723#false} assume 0 == ~cond; {2723#false} is VALID [2022-04-08 11:51:10,848 INFO L290 TraceCheckUtils]: 35: Hoare triple {2723#false} ~cond := #in~cond; {2723#false} is VALID [2022-04-08 11:51:10,848 INFO L272 TraceCheckUtils]: 34: Hoare triple {2723#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2723#false} is VALID [2022-04-08 11:51:10,848 INFO L290 TraceCheckUtils]: 33: Hoare triple {2855#(< |main_#t~post4| 20)} assume !(#t~post4 < 20);havoc #t~post4; {2723#false} is VALID [2022-04-08 11:51:10,849 INFO L290 TraceCheckUtils]: 32: Hoare triple {2859#(< ~counter~0 20)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2855#(< |main_#t~post4| 20)} is VALID [2022-04-08 11:51:10,849 INFO L290 TraceCheckUtils]: 31: Hoare triple {2859#(< ~counter~0 20)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2859#(< ~counter~0 20)} is VALID [2022-04-08 11:51:10,849 INFO L290 TraceCheckUtils]: 30: Hoare triple {2859#(< ~counter~0 20)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {2859#(< ~counter~0 20)} is VALID [2022-04-08 11:51:10,850 INFO L284 TraceCheckUtils]: 29: Hoare quadruple {2722#true} {2859#(< ~counter~0 20)} #85#return; {2859#(< ~counter~0 20)} is VALID [2022-04-08 11:51:10,850 INFO L290 TraceCheckUtils]: 28: Hoare triple {2722#true} assume true; {2722#true} is VALID [2022-04-08 11:51:10,850 INFO L290 TraceCheckUtils]: 27: Hoare triple {2722#true} assume !(0 == ~cond); {2722#true} is VALID [2022-04-08 11:51:10,850 INFO L290 TraceCheckUtils]: 26: Hoare triple {2722#true} ~cond := #in~cond; {2722#true} is VALID [2022-04-08 11:51:10,850 INFO L272 TraceCheckUtils]: 25: Hoare triple {2859#(< ~counter~0 20)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2722#true} is VALID [2022-04-08 11:51:10,850 INFO L290 TraceCheckUtils]: 24: Hoare triple {2859#(< ~counter~0 20)} assume !!(#t~post4 < 20);havoc #t~post4; {2859#(< ~counter~0 20)} is VALID [2022-04-08 11:51:10,851 INFO L290 TraceCheckUtils]: 23: Hoare triple {2887#(< ~counter~0 19)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2859#(< ~counter~0 20)} is VALID [2022-04-08 11:51:10,851 INFO L290 TraceCheckUtils]: 22: Hoare triple {2887#(< ~counter~0 19)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {2887#(< ~counter~0 19)} is VALID [2022-04-08 11:51:10,852 INFO L290 TraceCheckUtils]: 21: Hoare triple {2887#(< ~counter~0 19)} assume !!(#t~post3 < 20);havoc #t~post3; {2887#(< ~counter~0 19)} is VALID [2022-04-08 11:51:10,852 INFO L290 TraceCheckUtils]: 20: Hoare triple {2897#(< ~counter~0 18)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2887#(< ~counter~0 19)} is VALID [2022-04-08 11:51:10,853 INFO L290 TraceCheckUtils]: 19: Hoare triple {2897#(< ~counter~0 18)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2897#(< ~counter~0 18)} is VALID [2022-04-08 11:51:10,853 INFO L290 TraceCheckUtils]: 18: Hoare triple {2897#(< ~counter~0 18)} assume !!(#t~post3 < 20);havoc #t~post3; {2897#(< ~counter~0 18)} is VALID [2022-04-08 11:51:10,853 INFO L290 TraceCheckUtils]: 17: Hoare triple {2907#(< ~counter~0 17)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2897#(< ~counter~0 18)} is VALID [2022-04-08 11:51:10,854 INFO L290 TraceCheckUtils]: 16: Hoare triple {2907#(< ~counter~0 17)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2907#(< ~counter~0 17)} is VALID [2022-04-08 11:51:10,854 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {2722#true} {2907#(< ~counter~0 17)} #83#return; {2907#(< ~counter~0 17)} is VALID [2022-04-08 11:51:10,854 INFO L290 TraceCheckUtils]: 14: Hoare triple {2722#true} assume true; {2722#true} is VALID [2022-04-08 11:51:10,854 INFO L290 TraceCheckUtils]: 13: Hoare triple {2722#true} assume !(0 == ~cond); {2722#true} is VALID [2022-04-08 11:51:10,854 INFO L290 TraceCheckUtils]: 12: Hoare triple {2722#true} ~cond := #in~cond; {2722#true} is VALID [2022-04-08 11:51:10,855 INFO L272 TraceCheckUtils]: 11: Hoare triple {2907#(< ~counter~0 17)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {2722#true} is VALID [2022-04-08 11:51:10,859 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {2722#true} {2907#(< ~counter~0 17)} #81#return; {2907#(< ~counter~0 17)} is VALID [2022-04-08 11:51:10,860 INFO L290 TraceCheckUtils]: 9: Hoare triple {2722#true} assume true; {2722#true} is VALID [2022-04-08 11:51:10,860 INFO L290 TraceCheckUtils]: 8: Hoare triple {2722#true} assume !(0 == ~cond); {2722#true} is VALID [2022-04-08 11:51:10,860 INFO L290 TraceCheckUtils]: 7: Hoare triple {2722#true} ~cond := #in~cond; {2722#true} is VALID [2022-04-08 11:51:10,860 INFO L272 TraceCheckUtils]: 6: Hoare triple {2907#(< ~counter~0 17)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {2722#true} is VALID [2022-04-08 11:51:10,861 INFO L290 TraceCheckUtils]: 5: Hoare triple {2907#(< ~counter~0 17)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {2907#(< ~counter~0 17)} is VALID [2022-04-08 11:51:10,862 INFO L272 TraceCheckUtils]: 4: Hoare triple {2907#(< ~counter~0 17)} call #t~ret5 := main(); {2907#(< ~counter~0 17)} is VALID [2022-04-08 11:51:10,862 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2907#(< ~counter~0 17)} {2722#true} #89#return; {2907#(< ~counter~0 17)} is VALID [2022-04-08 11:51:10,862 INFO L290 TraceCheckUtils]: 2: Hoare triple {2907#(< ~counter~0 17)} assume true; {2907#(< ~counter~0 17)} is VALID [2022-04-08 11:51:10,863 INFO L290 TraceCheckUtils]: 1: Hoare triple {2722#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {2907#(< ~counter~0 17)} is VALID [2022-04-08 11:51:10,863 INFO L272 TraceCheckUtils]: 0: Hoare triple {2722#true} call ULTIMATE.init(); {2722#true} is VALID [2022-04-08 11:51:10,863 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 11:51:10,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 11:51:10,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082948084] [2022-04-08 11:51:10,864 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 11:51:10,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755676311] [2022-04-08 11:51:10,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755676311] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 11:51:10,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-08 11:51:10,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-04-08 11:51:10,864 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 11:51:10,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [196007771] [2022-04-08 11:51:10,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [196007771] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 11:51:10,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 11:51:10,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 11:51:10,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285911117] [2022-04-08 11:51:10,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 11:51:10,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2022-04-08 11:51:10,866 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 11:51:10,866 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 11:51:10,909 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:10,909 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-08 11:51:10,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 11:51:10,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-08 11:51:10,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-04-08 11:51:10,911 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 11:51:11,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:11,150 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2022-04-08 11:51:11,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-08 11:51:11,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2022-04-08 11:51:11,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 11:51:11,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 11:51:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 66 transitions. [2022-04-08 11:51:11,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 11:51:11,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 66 transitions. [2022-04-08 11:51:11,155 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 66 transitions. [2022-04-08 11:51:11,213 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 66 edges. 66 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:11,215 INFO L225 Difference]: With dead ends: 67 [2022-04-08 11:51:11,215 INFO L226 Difference]: Without dead ends: 60 [2022-04-08 11:51:11,215 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-04-08 11:51:11,216 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 30 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 11:51:11,216 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 96 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 11:51:11,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-04-08 11:51:11,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2022-04-08 11:51:11,262 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 11:51:11,263 INFO L82 GeneralOperation]: Start isEquivalent. First operand 60 states. Second operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 11:51:11,263 INFO L74 IsIncluded]: Start isIncluded. First operand 60 states. Second operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 11:51:11,263 INFO L87 Difference]: Start difference. First operand 60 states. Second operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 11:51:11,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:11,265 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2022-04-08 11:51:11,265 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2022-04-08 11:51:11,266 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:51:11,266 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:51:11,266 INFO L74 IsIncluded]: Start isIncluded. First operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 60 states. [2022-04-08 11:51:11,266 INFO L87 Difference]: Start difference. First operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 60 states. [2022-04-08 11:51:11,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:51:11,268 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2022-04-08 11:51:11,268 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2022-04-08 11:51:11,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:51:11,269 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:51:11,269 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 11:51:11,269 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 11:51:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 11:51:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-04-08 11:51:11,271 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 38 [2022-04-08 11:51:11,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 11:51:11,271 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-04-08 11:51:11,272 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 11:51:11,272 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 54 states and 63 transitions. [2022-04-08 11:51:11,349 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:51:11,350 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-04-08 11:51:11,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-08 11:51:11,350 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 11:51:11,350 INFO L499 BasicCegarLoop]: trace histogram [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] [2022-04-08 11:51:11,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-08 11:51:11,551 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:51:11,551 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 11:51:11,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 11:51:11,552 INFO L85 PathProgramCache]: Analyzing trace with hash 817777954, now seen corresponding path program 1 times [2022-04-08 11:51:11,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 11:51:11,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1139904616] [2022-04-08 11:51:11,552 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 11:51:11,552 INFO L85 PathProgramCache]: Analyzing trace with hash 817777954, now seen corresponding path program 2 times [2022-04-08 11:51:11,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 11:51:11,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343096268] [2022-04-08 11:51:11,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 11:51:11,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 11:51:11,568 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 11:51:11,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2147028199] [2022-04-08 11:51:11,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 11:51:11,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:51:11,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 11:51:11,570 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 11:51:11,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process