/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound20.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 05:13:39,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 05:13:39,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 05:13:39,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 05:13:40,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 05:13:40,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 05:13:40,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 05:13:40,029 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-08 05:13:40,044 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 05:13:40,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 05:13:40,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 05:13:40,046 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-08 05:13:40,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 05:13:40,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-08 05:13:40,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 05:13:40,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 05:13:40,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 05:13:40,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 05:13:40,046 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-08 05:13:40,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 05:13:40,046 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 05:13:40,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 05:13:40,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 05:13:40,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 05:13:40,047 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 05:13:40,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 05:13:40,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 05:13:40,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 05:13:40,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 05:13:40,047 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 05:13:40,047 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 05:13:40,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 05:13:40,047 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-08 05:13:40,048 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 05:13:40,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 05:13:40,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 05:13:40,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 05:13:40,296 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 05:13:40,297 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 05:13:40,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound20.i [2022-04-08 05:13:40,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b76407212/4e01a6138f51440b80a73774eee4efbd/FLAG9a9f55775 [2022-04-08 05:13:40,727 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 05:13:40,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound20.i [2022-04-08 05:13:40,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b76407212/4e01a6138f51440b80a73774eee4efbd/FLAG9a9f55775 [2022-04-08 05:13:40,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b76407212/4e01a6138f51440b80a73774eee4efbd [2022-04-08 05:13:40,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 05:13:40,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 05:13:40,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 05:13:40,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 05:13:40,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 05:13:40,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 05:13:40" (1/1) ... [2022-04-08 05:13:40,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be61a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 05:13:40, skipping insertion in model container [2022-04-08 05:13:40,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 05:13:40" (1/1) ... [2022-04-08 05:13:40,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 05:13:40,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 05:13:40,930 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/divbin2_valuebound20.i[951,964] [2022-04-08 05:13:40,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 05:13:40,958 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 05:13:40,999 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/divbin2_valuebound20.i[951,964] [2022-04-08 05:13:41,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 05:13:41,023 INFO L208 MainTranslator]: Completed translation [2022-04-08 05:13:41,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 05:13:41 WrapperNode [2022-04-08 05:13:41,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 05:13:41,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 05:13:41,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 05:13:41,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 05:13:41,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 05:13:41" (1/1) ... [2022-04-08 05:13:41,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 05:13:41" (1/1) ... [2022-04-08 05:13:41,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 05:13:41" (1/1) ... [2022-04-08 05:13:41,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 05:13:41" (1/1) ... [2022-04-08 05:13:41,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 05:13:41" (1/1) ... [2022-04-08 05:13:41,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 05:13:41" (1/1) ... [2022-04-08 05:13:41,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 05:13:41" (1/1) ... [2022-04-08 05:13:41,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 05:13:41,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 05:13:41,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 05:13:41,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 05:13:41,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 05:13:41" (1/1) ... [2022-04-08 05:13:41,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 05:13:41,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 05:13:41,097 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 05:13:41,129 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 05:13:41,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 05:13:41,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 05:13:41,140 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 05:13:41,140 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-08 05:13:41,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 05:13:41,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 05:13:41,140 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 05:13:41,140 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 05:13:41,140 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-08 05:13:41,140 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-08 05:13:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 05:13:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 05:13:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-08 05:13:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-08 05:13:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 05:13:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 05:13:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 05:13:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 05:13:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 05:13:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 05:13:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 05:13:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 05:13:41,187 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 05:13:41,188 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 05:13:41,365 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 05:13:41,375 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 05:13:41,375 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-08 05:13:41,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 05:13:41 BoogieIcfgContainer [2022-04-08 05:13:41,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 05:13:41,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 05:13:41,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 05:13:41,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 05:13:41,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 05:13:40" (1/3) ... [2022-04-08 05:13:41,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1458475b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 05:13:41, skipping insertion in model container [2022-04-08 05:13:41,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 05:13:41" (2/3) ... [2022-04-08 05:13:41,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1458475b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 05:13:41, skipping insertion in model container [2022-04-08 05:13:41,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 05:13:41" (3/3) ... [2022-04-08 05:13:41,400 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound20.i [2022-04-08 05:13:41,403 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 05:13:41,403 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 05:13:41,451 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 05:13:41,458 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 05:13:41,458 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 05:13:41,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 05:13:41,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-08 05:13:41,479 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 05:13:41,480 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 05:13:41,481 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 05:13:41,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 05:13:41,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1171333446, now seen corresponding path program 1 times [2022-04-08 05:13:41,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 05:13:41,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [894766720] [2022-04-08 05:13:41,504 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 05:13:41,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1171333446, now seen corresponding path program 2 times [2022-04-08 05:13:41,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 05:13:41,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770936928] [2022-04-08 05:13:41,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 05:13:41,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 05:13:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 05:13:41,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 05:13:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 05:13:41,665 INFO L290 TraceCheckUtils]: 0: Hoare triple {42#(and (= |#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(10, 2); {33#true} is VALID [2022-04-08 05:13:41,665 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume true; {33#true} is VALID [2022-04-08 05:13:41,666 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {33#true} {33#true} #84#return; {33#true} is VALID [2022-04-08 05:13:41,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-08 05:13:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 05:13:41,673 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-08 05:13:41,674 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-08 05:13:41,674 INFO L290 TraceCheckUtils]: 2: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-08 05:13:41,674 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {34#false} {33#true} #78#return; {34#false} is VALID [2022-04-08 05:13:41,675 INFO L272 TraceCheckUtils]: 0: Hoare triple {33#true} call ULTIMATE.init(); {42#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 05:13:41,675 INFO L290 TraceCheckUtils]: 1: Hoare triple {42#(and (= |#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(10, 2); {33#true} is VALID [2022-04-08 05:13:41,675 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#true} assume true; {33#true} is VALID [2022-04-08 05:13:41,676 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#true} {33#true} #84#return; {33#true} is VALID [2022-04-08 05:13:41,676 INFO L272 TraceCheckUtils]: 4: Hoare triple {33#true} call #t~ret2 := main(); {33#true} is VALID [2022-04-08 05:13:41,676 INFO L290 TraceCheckUtils]: 5: Hoare triple {33#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1; {33#true} is VALID [2022-04-08 05:13:41,676 INFO L272 TraceCheckUtils]: 6: Hoare triple {33#true} call assume_abort_if_not((if ~A~0 % 4294967296 >= 0 && ~A~0 % 4294967296 <= 20 then 1 else 0)); {33#true} is VALID [2022-04-08 05:13:41,676 INFO L290 TraceCheckUtils]: 7: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-08 05:13:41,677 INFO L290 TraceCheckUtils]: 8: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-08 05:13:41,677 INFO L290 TraceCheckUtils]: 9: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-08 05:13:41,677 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {34#false} {33#true} #78#return; {34#false} is VALID [2022-04-08 05:13:41,677 INFO L290 TraceCheckUtils]: 11: Hoare triple {34#false} ~B~0 := 1;~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {34#false} is VALID [2022-04-08 05:13:41,678 INFO L290 TraceCheckUtils]: 12: Hoare triple {34#false} assume !true; {34#false} is VALID [2022-04-08 05:13:41,678 INFO L290 TraceCheckUtils]: 13: Hoare triple {34#false} assume !true; {34#false} is VALID [2022-04-08 05:13:41,678 INFO L272 TraceCheckUtils]: 14: Hoare triple {34#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {34#false} is VALID [2022-04-08 05:13:41,678 INFO L290 TraceCheckUtils]: 15: Hoare triple {34#false} ~cond := #in~cond; {34#false} is VALID [2022-04-08 05:13:41,678 INFO L290 TraceCheckUtils]: 16: Hoare triple {34#false} assume 0 == ~cond; {34#false} is VALID [2022-04-08 05:13:41,679 INFO L290 TraceCheckUtils]: 17: Hoare triple {34#false} assume !false; {34#false} is VALID [2022-04-08 05:13:41,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 05:13:41,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 05:13:41,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770936928] [2022-04-08 05:13:41,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770936928] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 05:13:41,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 05:13:41,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 05:13:41,682 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 05:13:41,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [894766720] [2022-04-08 05:13:41,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [894766720] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 05:13:41,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 05:13:41,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 05:13:41,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903919791] [2022-04-08 05:13:41,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 05:13:41,687 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-04-08 05:13:41,688 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 05:13:41,691 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-08 05:13:41,724 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 05:13:41,725 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 05:13:41,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 05:13:41,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 05:13:41,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 05:13:41,755 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-08 05:13:41,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 05:13:41,890 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2022-04-08 05:13:41,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 05:13:41,891 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-04-08 05:13:41,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 05:13:41,892 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-08 05:13:41,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2022-04-08 05:13:41,903 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-08 05:13:41,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2022-04-08 05:13:41,913 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 70 transitions. [2022-04-08 05:13:41,992 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 70 edges. 70 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 05:13:42,000 INFO L225 Difference]: With dead ends: 51 [2022-04-08 05:13:42,000 INFO L226 Difference]: Without dead ends: 25 [2022-04-08 05:13:42,002 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 05:13:42,007 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 05:13:42,009 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 33 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 05:13:42,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-08 05:13:42,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-08 05:13:42,040 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 05:13:42,040 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 05:13:42,042 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 05:13:42,042 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 05:13:42,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 05:13:42,046 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-04-08 05:13:42,046 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-08 05:13:42,046 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 05:13:42,046 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 05:13:42,047 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-08 05:13:42,049 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-08 05:13:42,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 05:13:42,051 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-04-08 05:13:42,051 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-08 05:13:42,052 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 05:13:42,052 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 05:13:42,052 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 05:13:42,052 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 05:13:42,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 05:13:42,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-04-08 05:13:42,054 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 18 [2022-04-08 05:13:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 05:13:42,055 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-04-08 05:13:42,055 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-08 05:13:42,055 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 25 states and 28 transitions. [2022-04-08 05:13:42,081 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 05:13:42,082 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-08 05:13:42,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-08 05:13:42,082 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 05:13:42,082 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 05:13:42,083 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 05:13:42,083 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 05:13:42,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 05:13:42,083 INFO L85 PathProgramCache]: Analyzing trace with hash -73515422, now seen corresponding path program 1 times [2022-04-08 05:13:42,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 05:13:42,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1208524206] [2022-04-08 05:13:42,084 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 05:13:42,084 INFO L85 PathProgramCache]: Analyzing trace with hash -73515422, now seen corresponding path program 2 times [2022-04-08 05:13:42,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 05:13:42,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565057684] [2022-04-08 05:13:42,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 05:13:42,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 05:13:42,097 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 05:13:42,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [460141571] [2022-04-08 05:13:42,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 05:13:42,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 05:13:42,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 05:13:42,099 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 05:13:42,121 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 05:13:42,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-08 05:13:42,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 05:13:42,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-08 05:13:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 05:13:42,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 05:13:42,454 INFO L272 TraceCheckUtils]: 0: Hoare triple {247#true} call ULTIMATE.init(); {247#true} is VALID [2022-04-08 05:13:42,455 INFO L290 TraceCheckUtils]: 1: Hoare triple {247#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2); {247#true} is VALID [2022-04-08 05:13:42,455 INFO L290 TraceCheckUtils]: 2: Hoare triple {247#true} assume true; {247#true} is VALID [2022-04-08 05:13:42,455 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {247#true} {247#true} #84#return; {247#true} is VALID [2022-04-08 05:13:42,455 INFO L272 TraceCheckUtils]: 4: Hoare triple {247#true} call #t~ret2 := main(); {247#true} is VALID [2022-04-08 05:13:42,455 INFO L290 TraceCheckUtils]: 5: Hoare triple {247#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1; {247#true} is VALID [2022-04-08 05:13:42,456 INFO L272 TraceCheckUtils]: 6: Hoare triple {247#true} call assume_abort_if_not((if ~A~0 % 4294967296 >= 0 && ~A~0 % 4294967296 <= 20 then 1 else 0)); {247#true} is VALID [2022-04-08 05:13:42,456 INFO L290 TraceCheckUtils]: 7: Hoare triple {247#true} ~cond := #in~cond; {247#true} is VALID [2022-04-08 05:13:42,456 INFO L290 TraceCheckUtils]: 8: Hoare triple {247#true} assume !(0 == ~cond); {247#true} is VALID [2022-04-08 05:13:42,456 INFO L290 TraceCheckUtils]: 9: Hoare triple {247#true} assume true; {247#true} is VALID [2022-04-08 05:13:42,456 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {247#true} {247#true} #78#return; {247#true} is VALID [2022-04-08 05:13:42,457 INFO L290 TraceCheckUtils]: 11: Hoare triple {247#true} ~B~0 := 1;~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {285#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-08 05:13:42,458 INFO L290 TraceCheckUtils]: 12: Hoare triple {285#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !false; {285#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-08 05:13:42,458 INFO L290 TraceCheckUtils]: 13: Hoare triple {285#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {292#(and (= main_~b~0 1) (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 05:13:42,459 INFO L290 TraceCheckUtils]: 14: Hoare triple {292#(and (= main_~b~0 1) (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !false; {292#(and (= main_~b~0 1) (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 05:13:42,460 INFO L272 TraceCheckUtils]: 15: Hoare triple {292#(and (= main_~b~0 1) (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)); {299#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 05:13:42,460 INFO L290 TraceCheckUtils]: 16: Hoare triple {299#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {303#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 05:13:42,461 INFO L290 TraceCheckUtils]: 17: Hoare triple {303#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {248#false} is VALID [2022-04-08 05:13:42,461 INFO L290 TraceCheckUtils]: 18: Hoare triple {248#false} assume !false; {248#false} is VALID [2022-04-08 05:13:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 05:13:42,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 05:13:42,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 05:13:42,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565057684] [2022-04-08 05:13:42,462 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 05:13:42,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460141571] [2022-04-08 05:13:42,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460141571] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 05:13:42,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 05:13:42,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 05:13:42,463 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 05:13:42,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1208524206] [2022-04-08 05:13:42,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1208524206] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 05:13:42,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 05:13:42,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 05:13:42,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499086032] [2022-04-08 05:13:42,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 05:13:42,465 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-04-08 05:13:42,465 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 05:13:42,465 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-08 05:13:42,479 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 05:13:42,480 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 05:13:42,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 05:13:42,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 05:13:42,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-08 05:13:42,481 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-08 05:13:44,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 05:13:44,757 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-04-08 05:13:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 05:13:44,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-04-08 05:13:44,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 05:13:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-08 05:13:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 42 transitions. [2022-04-08 05:13:44,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-08 05:13:44,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 42 transitions. [2022-04-08 05:13:44,760 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 42 transitions. [2022-04-08 05:13:44,795 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 05:13:44,796 INFO L225 Difference]: With dead ends: 37 [2022-04-08 05:13:44,797 INFO L226 Difference]: Without dead ends: 34 [2022-04-08 05:13:44,797 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 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 05:13:44,798 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 05:13:44,798 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 92 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 05:13:44,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-08 05:13:44,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-04-08 05:13:44,808 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 05:13:44,808 INFO L82 GeneralOperation]: Start isEquivalent. First operand 34 states. Second operand has 34 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 05:13:44,808 INFO L74 IsIncluded]: Start isIncluded. First operand 34 states. Second operand has 34 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 05:13:44,809 INFO L87 Difference]: Start difference. First operand 34 states. Second operand has 34 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 05:13:44,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 05:13:44,810 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-04-08 05:13:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-04-08 05:13:44,810 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 05:13:44,810 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 05:13:44,811 INFO L74 IsIncluded]: Start isIncluded. First operand has 34 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 34 states. [2022-04-08 05:13:44,811 INFO L87 Difference]: Start difference. First operand has 34 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 34 states. [2022-04-08 05:13:44,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 05:13:44,812 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-04-08 05:13:44,812 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-04-08 05:13:44,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 05:13:44,813 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 05:13:44,813 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 05:13:44,813 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 05:13:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 05:13:44,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-04-08 05:13:44,814 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 19 [2022-04-08 05:13:44,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 05:13:44,815 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-04-08 05:13:44,815 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-08 05:13:44,815 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 34 states and 38 transitions. [2022-04-08 05:13:44,856 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 05:13:44,856 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-04-08 05:13:44,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-08 05:13:44,857 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 05:13:44,857 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 05:13:44,877 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 05:13:45,074 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 05:13:45,074 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 05:13:45,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 05:13:45,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1211706883, now seen corresponding path program 1 times [2022-04-08 05:13:45,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 05:13:45,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1820963199] [2022-04-08 05:13:45,088 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-08 05:13:45,089 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2022-04-08 05:13:45,089 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 05:13:45,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1211706883, now seen corresponding path program 2 times [2022-04-08 05:13:45,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 05:13:45,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316359257] [2022-04-08 05:13:45,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 05:13:45,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 05:13:45,100 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 05:13:45,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976934371] [2022-04-08 05:13:45,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 05:13:45,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 05:13:45,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 05:13:45,102 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 05:13:45,103 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 05:13:45,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-08 05:13:45,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 05:13:45,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-08 05:13:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 05:13:45,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 05:13:45,423 INFO L272 TraceCheckUtils]: 0: Hoare triple {521#true} call ULTIMATE.init(); {521#true} is VALID [2022-04-08 05:13:45,423 INFO L290 TraceCheckUtils]: 1: Hoare triple {521#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2); {521#true} is VALID [2022-04-08 05:13:45,423 INFO L290 TraceCheckUtils]: 2: Hoare triple {521#true} assume true; {521#true} is VALID [2022-04-08 05:13:45,423 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {521#true} {521#true} #84#return; {521#true} is VALID [2022-04-08 05:13:45,423 INFO L272 TraceCheckUtils]: 4: Hoare triple {521#true} call #t~ret2 := main(); {521#true} is VALID [2022-04-08 05:13:45,424 INFO L290 TraceCheckUtils]: 5: Hoare triple {521#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1; {521#true} is VALID [2022-04-08 05:13:45,424 INFO L272 TraceCheckUtils]: 6: Hoare triple {521#true} call assume_abort_if_not((if ~A~0 % 4294967296 >= 0 && ~A~0 % 4294967296 <= 20 then 1 else 0)); {521#true} is VALID [2022-04-08 05:13:45,424 INFO L290 TraceCheckUtils]: 7: Hoare triple {521#true} ~cond := #in~cond; {547#(= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)} is VALID [2022-04-08 05:13:45,425 INFO L290 TraceCheckUtils]: 8: Hoare triple {547#(= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)} assume !(0 == ~cond); {551#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-08 05:13:45,425 INFO L290 TraceCheckUtils]: 9: Hoare triple {551#(not (= |assume_abort_if_not_#in~cond| 0))} assume true; {551#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-08 05:13:45,426 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {551#(not (= |assume_abort_if_not_#in~cond| 0))} {521#true} #78#return; {558#(<= (mod main_~A~0 4294967296) 20)} is VALID [2022-04-08 05:13:45,426 INFO L290 TraceCheckUtils]: 11: Hoare triple {558#(<= (mod main_~A~0 4294967296) 20)} ~B~0 := 1;~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {562#(and (= main_~A~0 main_~r~0) (<= (mod main_~A~0 4294967296) 20) (= main_~q~0 0))} is VALID [2022-04-08 05:13:45,427 INFO L290 TraceCheckUtils]: 12: Hoare triple {562#(and (= main_~A~0 main_~r~0) (<= (mod main_~A~0 4294967296) 20) (= main_~q~0 0))} assume !false; {562#(and (= main_~A~0 main_~r~0) (<= (mod main_~A~0 4294967296) 20) (= main_~q~0 0))} is VALID [2022-04-08 05:13:45,427 INFO L290 TraceCheckUtils]: 13: Hoare triple {562#(and (= main_~A~0 main_~r~0) (<= (mod main_~A~0 4294967296) 20) (= main_~q~0 0))} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {562#(and (= main_~A~0 main_~r~0) (<= (mod main_~A~0 4294967296) 20) (= main_~q~0 0))} is VALID [2022-04-08 05:13:45,427 INFO L290 TraceCheckUtils]: 14: Hoare triple {562#(and (= main_~A~0 main_~r~0) (<= (mod main_~A~0 4294967296) 20) (= main_~q~0 0))} assume !false; {562#(and (= main_~A~0 main_~r~0) (<= (mod main_~A~0 4294967296) 20) (= main_~q~0 0))} is VALID [2022-04-08 05:13:45,428 INFO L290 TraceCheckUtils]: 15: Hoare triple {562#(and (= main_~A~0 main_~r~0) (<= (mod main_~A~0 4294967296) 20) (= main_~q~0 0))} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {562#(and (= main_~A~0 main_~r~0) (<= (mod main_~A~0 4294967296) 20) (= main_~q~0 0))} is VALID [2022-04-08 05:13:45,428 INFO L290 TraceCheckUtils]: 16: Hoare triple {562#(and (= main_~A~0 main_~r~0) (<= (mod main_~A~0 4294967296) 20) (= main_~q~0 0))} assume !false; {562#(and (= main_~A~0 main_~r~0) (<= (mod main_~A~0 4294967296) 20) (= main_~q~0 0))} is VALID [2022-04-08 05:13:45,429 INFO L272 TraceCheckUtils]: 17: Hoare triple {562#(and (= main_~A~0 main_~r~0) (<= (mod main_~A~0 4294967296) 20) (= main_~q~0 0))} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {581#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 05:13:45,430 INFO L290 TraceCheckUtils]: 18: Hoare triple {581#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {585#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 05:13:45,430 INFO L290 TraceCheckUtils]: 19: Hoare triple {585#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {522#false} is VALID [2022-04-08 05:13:45,430 INFO L290 TraceCheckUtils]: 20: Hoare triple {522#false} assume !false; {522#false} is VALID [2022-04-08 05:13:45,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-08 05:13:45,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 05:13:45,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 05:13:45,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316359257] [2022-04-08 05:13:45,431 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 05:13:45,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976934371] [2022-04-08 05:13:45,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976934371] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 05:13:45,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 05:13:45,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 05:13:45,431 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 05:13:45,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1820963199] [2022-04-08 05:13:45,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1820963199] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 05:13:45,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 05:13:45,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 05:13:45,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898344889] [2022-04-08 05:13:45,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 05:13:45,432 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-04-08 05:13:45,433 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 05:13:45,433 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-08 05:13:45,449 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 05:13:45,449 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-08 05:13:45,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 05:13:45,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-08 05:13:45,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-04-08 05:13:45,450 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-08 05:13:45,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 05:13:45,781 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2022-04-08 05:13:45,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-08 05:13:45,782 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-04-08 05:13:45,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 05:13:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-08 05:13:45,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 41 transitions. [2022-04-08 05:13:45,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-08 05:13:45,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 41 transitions. [2022-04-08 05:13:45,792 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 41 transitions. [2022-04-08 05:13:45,831 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 05:13:45,833 INFO L225 Difference]: With dead ends: 45 [2022-04-08 05:13:45,833 INFO L226 Difference]: Without dead ends: 42 [2022-04-08 05:13:45,834 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-04-08 05:13:45,842 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 05:13:45,843 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 88 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 05:13:45,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-04-08 05:13:45,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2022-04-08 05:13:45,869 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 05:13:45,869 INFO L82 GeneralOperation]: Start isEquivalent. First operand 42 states. Second operand has 33 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 05:13:45,869 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand has 33 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 05:13:45,869 INFO L87 Difference]: Start difference. First operand 42 states. Second operand has 33 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 05:13:45,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 05:13:45,871 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2022-04-08 05:13:45,871 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-04-08 05:13:45,872 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 05:13:45,872 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 05:13:45,872 INFO L74 IsIncluded]: Start isIncluded. First operand has 33 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 42 states. [2022-04-08 05:13:45,872 INFO L87 Difference]: Start difference. First operand has 33 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 42 states. [2022-04-08 05:13:45,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 05:13:45,873 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2022-04-08 05:13:45,874 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-04-08 05:13:45,874 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 05:13:45,874 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 05:13:45,874 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 05:13:45,874 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 05:13:45,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 05:13:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-04-08 05:13:45,875 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 21 [2022-04-08 05:13:45,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 05:13:45,876 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-04-08 05:13:45,876 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-08 05:13:45,876 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 33 states and 37 transitions. [2022-04-08 05:13:45,924 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 05:13:45,925 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-04-08 05:13:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-04-08 05:13:45,925 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 05:13:45,925 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, 1] [2022-04-08 05:13:45,955 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 05:13:46,126 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 05:13:46,126 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 05:13:46,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 05:13:46,127 INFO L85 PathProgramCache]: Analyzing trace with hash 947727214, now seen corresponding path program 1 times [2022-04-08 05:13:46,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 05:13:46,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1044683473] [2022-04-08 05:13:46,127 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 05:13:46,127 INFO L85 PathProgramCache]: Analyzing trace with hash 947727214, now seen corresponding path program 2 times [2022-04-08 05:13:46,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 05:13:46,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437236230] [2022-04-08 05:13:46,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 05:13:46,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 05:13:46,150 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 05:13:46,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908086364] [2022-04-08 05:13:46,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 05:13:46,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 05:13:46,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 05:13:46,152 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 05:13:46,153 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 05:13:46,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 05:13:46,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 05:13:46,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-08 05:13:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 05:13:46,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 05:13:46,278 INFO L272 TraceCheckUtils]: 0: Hoare triple {835#true} call ULTIMATE.init(); {835#true} is VALID [2022-04-08 05:13:46,278 INFO L290 TraceCheckUtils]: 1: Hoare triple {835#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2); {835#true} is VALID [2022-04-08 05:13:46,278 INFO L290 TraceCheckUtils]: 2: Hoare triple {835#true} assume true; {835#true} is VALID [2022-04-08 05:13:46,278 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {835#true} {835#true} #84#return; {835#true} is VALID [2022-04-08 05:13:46,279 INFO L272 TraceCheckUtils]: 4: Hoare triple {835#true} call #t~ret2 := main(); {835#true} is VALID [2022-04-08 05:13:46,279 INFO L290 TraceCheckUtils]: 5: Hoare triple {835#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1; {835#true} is VALID [2022-04-08 05:13:46,279 INFO L272 TraceCheckUtils]: 6: Hoare triple {835#true} call assume_abort_if_not((if ~A~0 % 4294967296 >= 0 && ~A~0 % 4294967296 <= 20 then 1 else 0)); {835#true} is VALID [2022-04-08 05:13:46,279 INFO L290 TraceCheckUtils]: 7: Hoare triple {835#true} ~cond := #in~cond; {835#true} is VALID [2022-04-08 05:13:46,279 INFO L290 TraceCheckUtils]: 8: Hoare triple {835#true} assume !(0 == ~cond); {835#true} is VALID [2022-04-08 05:13:46,279 INFO L290 TraceCheckUtils]: 9: Hoare triple {835#true} assume true; {835#true} is VALID [2022-04-08 05:13:46,279 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {835#true} {835#true} #78#return; {835#true} is VALID [2022-04-08 05:13:46,283 INFO L290 TraceCheckUtils]: 11: Hoare triple {835#true} ~B~0 := 1;~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {873#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} is VALID [2022-04-08 05:13:46,283 INFO L290 TraceCheckUtils]: 12: Hoare triple {873#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} assume !false; {873#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} is VALID [2022-04-08 05:13:46,283 INFO L290 TraceCheckUtils]: 13: Hoare triple {873#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {873#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} is VALID [2022-04-08 05:13:46,284 INFO L290 TraceCheckUtils]: 14: Hoare triple {873#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} assume !false; {873#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} is VALID [2022-04-08 05:13:46,284 INFO L272 TraceCheckUtils]: 15: Hoare triple {873#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {835#true} is VALID [2022-04-08 05:13:46,284 INFO L290 TraceCheckUtils]: 16: Hoare triple {835#true} ~cond := #in~cond; {835#true} is VALID [2022-04-08 05:13:46,284 INFO L290 TraceCheckUtils]: 17: Hoare triple {835#true} assume !(0 == ~cond); {835#true} is VALID [2022-04-08 05:13:46,284 INFO L290 TraceCheckUtils]: 18: Hoare triple {835#true} assume true; {835#true} is VALID [2022-04-08 05:13:46,285 INFO L284 TraceCheckUtils]: 19: Hoare quadruple {835#true} {873#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} #80#return; {873#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} is VALID [2022-04-08 05:13:46,287 INFO L290 TraceCheckUtils]: 20: Hoare triple {873#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} 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); {836#false} is VALID [2022-04-08 05:13:46,287 INFO L290 TraceCheckUtils]: 21: Hoare triple {836#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {836#false} is VALID [2022-04-08 05:13:46,287 INFO L290 TraceCheckUtils]: 22: Hoare triple {836#false} assume !false; {836#false} is VALID [2022-04-08 05:13:46,287 INFO L272 TraceCheckUtils]: 23: Hoare triple {836#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {836#false} is VALID [2022-04-08 05:13:46,288 INFO L290 TraceCheckUtils]: 24: Hoare triple {836#false} ~cond := #in~cond; {836#false} is VALID [2022-04-08 05:13:46,288 INFO L290 TraceCheckUtils]: 25: Hoare triple {836#false} assume 0 == ~cond; {836#false} is VALID [2022-04-08 05:13:46,288 INFO L290 TraceCheckUtils]: 26: Hoare triple {836#false} assume !false; {836#false} is VALID [2022-04-08 05:13:46,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 05:13:46,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 05:13:46,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 05:13:46,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437236230] [2022-04-08 05:13:46,289 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 05:13:46,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908086364] [2022-04-08 05:13:46,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908086364] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 05:13:46,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 05:13:46,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 05:13:46,289 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 05:13:46,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1044683473] [2022-04-08 05:13:46,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1044683473] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 05:13:46,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 05:13:46,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 05:13:46,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285316325] [2022-04-08 05:13:46,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 05:13:46,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-04-08 05:13:46,290 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 05:13:46,290 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 05:13:46,310 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 05:13:46,311 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 05:13:46,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 05:13:46,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 05:13:46,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 05:13:46,311 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 05:13:48,361 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 05:13:48,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 05:13:48,530 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2022-04-08 05:13:48,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 05:13:48,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-04-08 05:13:48,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 05:13:48,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 05:13:48,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2022-04-08 05:13:48,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 05:13:48,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2022-04-08 05:13:48,533 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 48 transitions. [2022-04-08 05:13:48,569 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 05:13:48,569 INFO L225 Difference]: With dead ends: 57 [2022-04-08 05:13:48,570 INFO L226 Difference]: Without dead ends: 35 [2022-04-08 05:13:48,570 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 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 05:13:48,570 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-04-08 05:13:48,571 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2022-04-08 05:13:48,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-08 05:13:48,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-04-08 05:13:48,588 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 05:13:48,588 INFO L82 GeneralOperation]: Start isEquivalent. First operand 35 states. Second operand has 35 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 05:13:48,588 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand has 35 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 05:13:48,589 INFO L87 Difference]: Start difference. First operand 35 states. Second operand has 35 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 05:13:48,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 05:13:48,590 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-04-08 05:13:48,590 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-04-08 05:13:48,590 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 05:13:48,590 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 05:13:48,590 INFO L74 IsIncluded]: Start isIncluded. First operand has 35 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 35 states. [2022-04-08 05:13:48,590 INFO L87 Difference]: Start difference. First operand has 35 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 35 states. [2022-04-08 05:13:48,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 05:13:48,591 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-04-08 05:13:48,592 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-04-08 05:13:48,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 05:13:48,592 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 05:13:48,592 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 05:13:48,592 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 05:13:48,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 05:13:48,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-04-08 05:13:48,593 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 27 [2022-04-08 05:13:48,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 05:13:48,593 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-04-08 05:13:48,593 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 05:13:48,594 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 35 states and 39 transitions. [2022-04-08 05:13:48,636 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 05:13:48,636 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-04-08 05:13:48,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-08 05:13:48,637 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 05:13:48,637 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 05:13:48,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-08 05:13:48,847 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 05:13:48,848 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 05:13:48,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 05:13:48,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1574040585, now seen corresponding path program 1 times [2022-04-08 05:13:48,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 05:13:48,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1616853413] [2022-04-08 05:13:48,851 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-08 05:13:48,851 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2022-04-08 05:13:48,851 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 05:13:48,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1574040585, now seen corresponding path program 2 times [2022-04-08 05:13:48,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 05:13:48,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975474418] [2022-04-08 05:13:48,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 05:13:48,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 05:13:48,860 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 05:13:48,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666526282] [2022-04-08 05:13:48,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 05:13:48,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 05:13:48,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 05:13:48,874 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 05:13:48,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process