/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 12:48:09,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 12:48:09,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 12:48:09,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 12:48:09,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 12:48:09,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 12:48:09,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 12:48:09,201 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-08 12:48:09,214 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 12:48:09,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 12:48:09,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 12:48:09,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 12:48:09,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 12:48:09,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 12:48:09,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 12:48:09,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 12:48:09,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 12:48:09,217 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 12:48:09,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 12:48:09,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 12:48:09,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 12:48:09,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 12:48:09,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 12:48:09,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 12:48:09,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 12:48:09,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 12:48:09,218 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 12:48:09,218 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 12:48:09,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 12:48:09,219 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-08 12:48:09,219 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 12:48:09,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 12:48:09,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 12:48:09,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 12:48:09,458 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 12:48:09,459 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 12:48:09,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound2.c [2022-04-08 12:48:09,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57c4e723/bd01acc50e6c440ba5da65946e619d34/FLAGdd4b401eb [2022-04-08 12:48:09,825 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 12:48:09,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound2.c [2022-04-08 12:48:09,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57c4e723/bd01acc50e6c440ba5da65946e619d34/FLAGdd4b401eb [2022-04-08 12:48:10,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57c4e723/bd01acc50e6c440ba5da65946e619d34 [2022-04-08 12:48:10,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 12:48:10,237 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 12:48:10,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 12:48:10,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 12:48:10,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 12:48:10,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 12:48:10" (1/1) ... [2022-04-08 12:48:10,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569e022b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:48:10, skipping insertion in model container [2022-04-08 12:48:10,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 12:48:10" (1/1) ... [2022-04-08 12:48:10,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 12:48:10,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 12:48:10,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound2.c[525,538] [2022-04-08 12:48:10,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 12:48:10,438 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 12:48:10,463 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound2.c[525,538] [2022-04-08 12:48:10,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 12:48:10,492 INFO L208 MainTranslator]: Completed translation [2022-04-08 12:48:10,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:48:10 WrapperNode [2022-04-08 12:48:10,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 12:48:10,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 12:48:10,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 12:48:10,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 12:48:10,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:48:10" (1/1) ... [2022-04-08 12:48:10,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:48:10" (1/1) ... [2022-04-08 12:48:10,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:48:10" (1/1) ... [2022-04-08 12:48:10,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:48:10" (1/1) ... [2022-04-08 12:48:10,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:48:10" (1/1) ... [2022-04-08 12:48:10,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:48:10" (1/1) ... [2022-04-08 12:48:10,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:48:10" (1/1) ... [2022-04-08 12:48:10,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 12:48:10,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 12:48:10,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 12:48:10,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 12:48:10,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:48:10" (1/1) ... [2022-04-08 12:48:10,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 12:48:10,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:48:10,568 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 12:48:10,570 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 12:48:10,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 12:48:10,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 12:48:10,605 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 12:48:10,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-08 12:48:10,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 12:48:10,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 12:48:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 12:48:10,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 12:48:10,606 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 12:48:10,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 12:48:10,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-08 12:48:10,606 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-08 12:48:10,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 12:48:10,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 12:48:10,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 12:48:10,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 12:48:10,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 12:48:10,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 12:48:10,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 12:48:10,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 12:48:10,657 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 12:48:10,658 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 12:48:10,836 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 12:48:10,843 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 12:48:10,843 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-08 12:48:10,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 12:48:10 BoogieIcfgContainer [2022-04-08 12:48:10,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 12:48:10,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 12:48:10,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 12:48:10,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 12:48:10,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 12:48:10" (1/3) ... [2022-04-08 12:48:10,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9ab49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 12:48:10, skipping insertion in model container [2022-04-08 12:48:10,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:48:10" (2/3) ... [2022-04-08 12:48:10,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9ab49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 12:48:10, skipping insertion in model container [2022-04-08 12:48:10,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 12:48:10" (3/3) ... [2022-04-08 12:48:10,851 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound2.c [2022-04-08 12:48:10,855 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 12:48:10,855 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 12:48:10,886 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 12:48:10,892 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 12:48:10,892 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 12:48:10,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:48:10,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-08 12:48:10,913 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:48:10,913 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:48:10,913 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:48:10,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:48:10,918 INFO L85 PathProgramCache]: Analyzing trace with hash -779299010, now seen corresponding path program 1 times [2022-04-08 12:48:10,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:48:10,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [959122156] [2022-04-08 12:48:10,934 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:48:10,934 INFO L85 PathProgramCache]: Analyzing trace with hash -779299010, now seen corresponding path program 2 times [2022-04-08 12:48:10,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:48:10,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723030760] [2022-04-08 12:48:10,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:48:10,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:48:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:48:11,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 12:48:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:48:11,091 INFO L290 TraceCheckUtils]: 0: Hoare triple {51#(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);call #Ultimate.allocInit(12, 3); {34#true} is VALID [2022-04-08 12:48:11,091 INFO L290 TraceCheckUtils]: 1: Hoare triple {34#true} assume true; {34#true} is VALID [2022-04-08 12:48:11,092 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {34#true} {34#true} #65#return; {34#true} is VALID [2022-04-08 12:48:11,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-08 12:48:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:48:11,100 INFO L290 TraceCheckUtils]: 0: Hoare triple {34#true} ~cond := #in~cond; {34#true} is VALID [2022-04-08 12:48:11,100 INFO L290 TraceCheckUtils]: 1: Hoare triple {34#true} assume 0 == ~cond;assume false; {35#false} is VALID [2022-04-08 12:48:11,101 INFO L290 TraceCheckUtils]: 2: Hoare triple {35#false} assume true; {35#false} is VALID [2022-04-08 12:48:11,101 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {35#false} {34#true} #55#return; {35#false} is VALID [2022-04-08 12:48:11,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-08 12:48:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:48:11,108 INFO L290 TraceCheckUtils]: 0: Hoare triple {34#true} ~cond := #in~cond; {34#true} is VALID [2022-04-08 12:48:11,109 INFO L290 TraceCheckUtils]: 1: Hoare triple {34#true} assume 0 == ~cond;assume false; {35#false} is VALID [2022-04-08 12:48:11,109 INFO L290 TraceCheckUtils]: 2: Hoare triple {35#false} assume true; {35#false} is VALID [2022-04-08 12:48:11,109 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {35#false} {35#false} #57#return; {35#false} is VALID [2022-04-08 12:48:11,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-08 12:48:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:48:11,120 INFO L290 TraceCheckUtils]: 0: Hoare triple {34#true} ~cond := #in~cond; {34#true} is VALID [2022-04-08 12:48:11,120 INFO L290 TraceCheckUtils]: 1: Hoare triple {34#true} assume 0 == ~cond;assume false; {35#false} is VALID [2022-04-08 12:48:11,121 INFO L290 TraceCheckUtils]: 2: Hoare triple {35#false} assume true; {35#false} is VALID [2022-04-08 12:48:11,121 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {35#false} {35#false} #59#return; {35#false} is VALID [2022-04-08 12:48:11,122 INFO L272 TraceCheckUtils]: 0: Hoare triple {34#true} call ULTIMATE.init(); {51#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 12:48:11,122 INFO L290 TraceCheckUtils]: 1: Hoare triple {51#(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);call #Ultimate.allocInit(12, 3); {34#true} is VALID [2022-04-08 12:48:11,122 INFO L290 TraceCheckUtils]: 2: Hoare triple {34#true} assume true; {34#true} is VALID [2022-04-08 12:48:11,123 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {34#true} {34#true} #65#return; {34#true} is VALID [2022-04-08 12:48:11,123 INFO L272 TraceCheckUtils]: 4: Hoare triple {34#true} call #t~ret7 := main(); {34#true} is VALID [2022-04-08 12:48:11,123 INFO L290 TraceCheckUtils]: 5: Hoare triple {34#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4; {34#true} is VALID [2022-04-08 12:48:11,123 INFO L272 TraceCheckUtils]: 6: Hoare triple {34#true} call assume_abort_if_not((if ~z~0 >= 0 && ~z~0 <= 2 then 1 else 0)); {34#true} is VALID [2022-04-08 12:48:11,124 INFO L290 TraceCheckUtils]: 7: Hoare triple {34#true} ~cond := #in~cond; {34#true} is VALID [2022-04-08 12:48:11,124 INFO L290 TraceCheckUtils]: 8: Hoare triple {34#true} assume 0 == ~cond;assume false; {35#false} is VALID [2022-04-08 12:48:11,124 INFO L290 TraceCheckUtils]: 9: Hoare triple {35#false} assume true; {35#false} is VALID [2022-04-08 12:48:11,125 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {35#false} {34#true} #55#return; {35#false} is VALID [2022-04-08 12:48:11,125 INFO L290 TraceCheckUtils]: 11: Hoare triple {35#false} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5; {35#false} is VALID [2022-04-08 12:48:11,125 INFO L272 TraceCheckUtils]: 12: Hoare triple {35#false} call assume_abort_if_not((if ~a~0 >= 0 && ~a~0 <= 2 then 1 else 0)); {34#true} is VALID [2022-04-08 12:48:11,125 INFO L290 TraceCheckUtils]: 13: Hoare triple {34#true} ~cond := #in~cond; {34#true} is VALID [2022-04-08 12:48:11,126 INFO L290 TraceCheckUtils]: 14: Hoare triple {34#true} assume 0 == ~cond;assume false; {35#false} is VALID [2022-04-08 12:48:11,126 INFO L290 TraceCheckUtils]: 15: Hoare triple {35#false} assume true; {35#false} is VALID [2022-04-08 12:48:11,126 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {35#false} {35#false} #57#return; {35#false} is VALID [2022-04-08 12:48:11,126 INFO L290 TraceCheckUtils]: 17: Hoare triple {35#false} assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6; {35#false} is VALID [2022-04-08 12:48:11,127 INFO L272 TraceCheckUtils]: 18: Hoare triple {35#false} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 2 then 1 else 0)); {34#true} is VALID [2022-04-08 12:48:11,127 INFO L290 TraceCheckUtils]: 19: Hoare triple {34#true} ~cond := #in~cond; {34#true} is VALID [2022-04-08 12:48:11,127 INFO L290 TraceCheckUtils]: 20: Hoare triple {34#true} assume 0 == ~cond;assume false; {35#false} is VALID [2022-04-08 12:48:11,128 INFO L290 TraceCheckUtils]: 21: Hoare triple {35#false} assume true; {35#false} is VALID [2022-04-08 12:48:11,128 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {35#false} {35#false} #59#return; {35#false} is VALID [2022-04-08 12:48:11,128 INFO L290 TraceCheckUtils]: 23: Hoare triple {35#false} ~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {35#false} is VALID [2022-04-08 12:48:11,128 INFO L290 TraceCheckUtils]: 24: Hoare triple {35#false} assume !true; {35#false} is VALID [2022-04-08 12:48:11,129 INFO L272 TraceCheckUtils]: 25: Hoare triple {35#false} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {35#false} is VALID [2022-04-08 12:48:11,129 INFO L290 TraceCheckUtils]: 26: Hoare triple {35#false} ~cond := #in~cond; {35#false} is VALID [2022-04-08 12:48:11,129 INFO L290 TraceCheckUtils]: 27: Hoare triple {35#false} assume 0 == ~cond; {35#false} is VALID [2022-04-08 12:48:11,129 INFO L290 TraceCheckUtils]: 28: Hoare triple {35#false} assume !false; {35#false} is VALID [2022-04-08 12:48:11,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-08 12:48:11,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:48:11,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723030760] [2022-04-08 12:48:11,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723030760] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:48:11,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:48:11,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 12:48:11,134 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:48:11,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [959122156] [2022-04-08 12:48:11,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [959122156] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:48:11,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:48:11,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 12:48:11,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938869701] [2022-04-08 12:48:11,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:48:11,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-04-08 12:48:11,141 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:48:11,144 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 12:48:11,170 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:48:11,170 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 12:48:11,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:48:11,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 12:48:11,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 12:48:11,190 INFO L87 Difference]: Start difference. First operand has 31 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 12:48:11,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:48:11,293 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2022-04-08 12:48:11,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 12:48:11,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-04-08 12:48:11,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:48:11,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 12:48:11,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2022-04-08 12:48:11,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 12:48:11,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2022-04-08 12:48:11,307 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 73 transitions. [2022-04-08 12:48:11,410 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 73 edges. 73 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:48:11,419 INFO L225 Difference]: With dead ends: 55 [2022-04-08 12:48:11,419 INFO L226 Difference]: Without dead ends: 26 [2022-04-08 12:48:11,422 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 12:48:11,427 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 12:48:11,428 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 32 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 12:48:11,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-04-08 12:48:11,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-04-08 12:48:11,470 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:48:11,471 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 12:48:11,472 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 12:48:11,472 INFO L87 Difference]: Start difference. First operand 26 states. Second operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 12:48:11,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:48:11,476 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-08 12:48:11,476 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-08 12:48:11,476 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:48:11,476 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:48:11,477 INFO L74 IsIncluded]: Start isIncluded. First operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 26 states. [2022-04-08 12:48:11,477 INFO L87 Difference]: Start difference. First operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 26 states. [2022-04-08 12:48:11,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:48:11,491 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-08 12:48:11,491 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-08 12:48:11,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:48:11,492 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:48:11,492 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:48:11,493 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:48:11,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 12:48:11,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-04-08 12:48:11,499 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 29 [2022-04-08 12:48:11,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:48:11,499 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-04-08 12:48:11,500 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 12:48:11,500 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 26 states and 29 transitions. [2022-04-08 12:48:11,534 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:48:11,534 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-08 12:48:11,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-08 12:48:11,536 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:48:11,536 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:48:11,536 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 12:48:11,537 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:48:11,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:48:11,540 INFO L85 PathProgramCache]: Analyzing trace with hash -963850242, now seen corresponding path program 1 times [2022-04-08 12:48:11,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:48:11,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1094870472] [2022-04-08 12:48:11,544 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:48:11,544 INFO L85 PathProgramCache]: Analyzing trace with hash -963850242, now seen corresponding path program 2 times [2022-04-08 12:48:11,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:48:11,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303572753] [2022-04-08 12:48:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:48:11,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:48:11,590 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 12:48:11,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574901868] [2022-04-08 12:48:11,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 12:48:11,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:48:11,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:48:11,599 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 12:48:11,608 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 12:48:11,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-08 12:48:11,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 12:48:11,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-08 12:48:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:48:11,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 12:48:11,907 INFO L272 TraceCheckUtils]: 0: Hoare triple {268#true} call ULTIMATE.init(); {268#true} is VALID [2022-04-08 12:48:11,907 INFO L290 TraceCheckUtils]: 1: Hoare triple {268#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {268#true} is VALID [2022-04-08 12:48:11,907 INFO L290 TraceCheckUtils]: 2: Hoare triple {268#true} assume true; {268#true} is VALID [2022-04-08 12:48:11,908 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {268#true} {268#true} #65#return; {268#true} is VALID [2022-04-08 12:48:11,912 INFO L272 TraceCheckUtils]: 4: Hoare triple {268#true} call #t~ret7 := main(); {268#true} is VALID [2022-04-08 12:48:11,912 INFO L290 TraceCheckUtils]: 5: Hoare triple {268#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4; {268#true} is VALID [2022-04-08 12:48:11,912 INFO L272 TraceCheckUtils]: 6: Hoare triple {268#true} call assume_abort_if_not((if ~z~0 >= 0 && ~z~0 <= 2 then 1 else 0)); {268#true} is VALID [2022-04-08 12:48:11,913 INFO L290 TraceCheckUtils]: 7: Hoare triple {268#true} ~cond := #in~cond; {268#true} is VALID [2022-04-08 12:48:11,913 INFO L290 TraceCheckUtils]: 8: Hoare triple {268#true} assume !(0 == ~cond); {268#true} is VALID [2022-04-08 12:48:11,914 INFO L290 TraceCheckUtils]: 9: Hoare triple {268#true} assume true; {268#true} is VALID [2022-04-08 12:48:11,916 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {268#true} {268#true} #55#return; {268#true} is VALID [2022-04-08 12:48:11,916 INFO L290 TraceCheckUtils]: 11: Hoare triple {268#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5; {268#true} is VALID [2022-04-08 12:48:11,916 INFO L272 TraceCheckUtils]: 12: Hoare triple {268#true} call assume_abort_if_not((if ~a~0 >= 0 && ~a~0 <= 2 then 1 else 0)); {268#true} is VALID [2022-04-08 12:48:11,917 INFO L290 TraceCheckUtils]: 13: Hoare triple {268#true} ~cond := #in~cond; {268#true} is VALID [2022-04-08 12:48:11,919 INFO L290 TraceCheckUtils]: 14: Hoare triple {268#true} assume !(0 == ~cond); {268#true} is VALID [2022-04-08 12:48:11,920 INFO L290 TraceCheckUtils]: 15: Hoare triple {268#true} assume true; {268#true} is VALID [2022-04-08 12:48:11,920 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {268#true} {268#true} #57#return; {268#true} is VALID [2022-04-08 12:48:11,920 INFO L290 TraceCheckUtils]: 17: Hoare triple {268#true} assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6; {268#true} is VALID [2022-04-08 12:48:11,920 INFO L272 TraceCheckUtils]: 18: Hoare triple {268#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 2 then 1 else 0)); {268#true} is VALID [2022-04-08 12:48:11,921 INFO L290 TraceCheckUtils]: 19: Hoare triple {268#true} ~cond := #in~cond; {268#true} is VALID [2022-04-08 12:48:11,921 INFO L290 TraceCheckUtils]: 20: Hoare triple {268#true} assume !(0 == ~cond); {268#true} is VALID [2022-04-08 12:48:11,921 INFO L290 TraceCheckUtils]: 21: Hoare triple {268#true} assume true; {268#true} is VALID [2022-04-08 12:48:11,921 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {268#true} {268#true} #59#return; {268#true} is VALID [2022-04-08 12:48:11,922 INFO L290 TraceCheckUtils]: 23: Hoare triple {268#true} ~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {342#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-08 12:48:11,923 INFO L290 TraceCheckUtils]: 24: Hoare triple {342#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !false; {342#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-08 12:48:11,924 INFO L272 TraceCheckUtils]: 25: Hoare triple {342#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {349#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 12:48:11,925 INFO L290 TraceCheckUtils]: 26: Hoare triple {349#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {353#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 12:48:11,925 INFO L290 TraceCheckUtils]: 27: Hoare triple {353#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {269#false} is VALID [2022-04-08 12:48:11,925 INFO L290 TraceCheckUtils]: 28: Hoare triple {269#false} assume !false; {269#false} is VALID [2022-04-08 12:48:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-08 12:48:11,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 12:48:11,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:48:11,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303572753] [2022-04-08 12:48:11,927 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 12:48:11,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574901868] [2022-04-08 12:48:11,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574901868] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:48:11,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:48:11,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 12:48:11,930 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:48:11,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1094870472] [2022-04-08 12:48:11,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1094870472] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:48:11,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:48:11,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 12:48:11,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166241849] [2022-04-08 12:48:11,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:48:11,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-04-08 12:48:11,933 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:48:11,934 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-08 12:48:11,955 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:48:11,955 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 12:48:11,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:48:11,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 12:48:11,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-08 12:48:11,957 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-08 12:48:12,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:48:12,104 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2022-04-08 12:48:12,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-08 12:48:12,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-04-08 12:48:12,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:48:12,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-08 12:48:12,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2022-04-08 12:48:12,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-08 12:48:12,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2022-04-08 12:48:12,128 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 40 transitions. [2022-04-08 12:48:12,165 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:48:12,169 INFO L225 Difference]: With dead ends: 36 [2022-04-08 12:48:12,171 INFO L226 Difference]: Without dead ends: 33 [2022-04-08 12:48:12,172 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-08 12:48:12,180 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 12:48:12,183 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 93 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 12:48:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-04-08 12:48:12,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-04-08 12:48:12,197 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:48:12,197 INFO L82 GeneralOperation]: Start isEquivalent. First operand 33 states. Second operand has 33 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 12:48:12,198 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand has 33 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 12:48:12,199 INFO L87 Difference]: Start difference. First operand 33 states. Second operand has 33 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 12:48:12,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:48:12,201 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-04-08 12:48:12,201 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-04-08 12:48:12,201 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:48:12,202 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:48:12,202 INFO L74 IsIncluded]: Start isIncluded. First operand has 33 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 33 states. [2022-04-08 12:48:12,202 INFO L87 Difference]: Start difference. First operand has 33 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 33 states. [2022-04-08 12:48:12,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:48:12,205 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-04-08 12:48:12,205 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-04-08 12:48:12,205 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:48:12,205 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:48:12,205 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:48:12,205 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:48:12,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 12:48:12,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-04-08 12:48:12,208 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2022-04-08 12:48:12,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:48:12,208 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-04-08 12:48:12,208 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-08 12:48:12,208 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 33 states and 36 transitions. [2022-04-08 12:48:12,251 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:48:12,251 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-04-08 12:48:12,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-04-08 12:48:12,258 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:48:12,258 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:48:12,286 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 12:48:12,486 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 12:48:12,486 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:48:12,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:48:12,487 INFO L85 PathProgramCache]: Analyzing trace with hash -425626518, now seen corresponding path program 1 times [2022-04-08 12:48:12,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:48:12,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [522889932] [2022-04-08 12:48:12,488 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:48:12,488 INFO L85 PathProgramCache]: Analyzing trace with hash -425626518, now seen corresponding path program 2 times [2022-04-08 12:48:12,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:48:12,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637582448] [2022-04-08 12:48:12,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:48:12,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:48:12,513 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 12:48:12,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986146363] [2022-04-08 12:48:12,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 12:48:12,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:48:12,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:48:12,515 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 12:48:12,518 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 12:48:12,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 12:48:12,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 12:48:12,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 27 conjunts are in the unsatisfiable core [2022-04-08 12:48:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:48:12,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 12:48:12,946 INFO L272 TraceCheckUtils]: 0: Hoare triple {565#true} call ULTIMATE.init(); {565#true} is VALID [2022-04-08 12:48:12,947 INFO L290 TraceCheckUtils]: 1: Hoare triple {565#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {565#true} is VALID [2022-04-08 12:48:12,947 INFO L290 TraceCheckUtils]: 2: Hoare triple {565#true} assume true; {565#true} is VALID [2022-04-08 12:48:12,947 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {565#true} {565#true} #65#return; {565#true} is VALID [2022-04-08 12:48:12,947 INFO L272 TraceCheckUtils]: 4: Hoare triple {565#true} call #t~ret7 := main(); {565#true} is VALID [2022-04-08 12:48:12,947 INFO L290 TraceCheckUtils]: 5: Hoare triple {565#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4; {565#true} is VALID [2022-04-08 12:48:12,947 INFO L272 TraceCheckUtils]: 6: Hoare triple {565#true} call assume_abort_if_not((if ~z~0 >= 0 && ~z~0 <= 2 then 1 else 0)); {565#true} is VALID [2022-04-08 12:48:12,948 INFO L290 TraceCheckUtils]: 7: Hoare triple {565#true} ~cond := #in~cond; {565#true} is VALID [2022-04-08 12:48:12,948 INFO L290 TraceCheckUtils]: 8: Hoare triple {565#true} assume !(0 == ~cond); {565#true} is VALID [2022-04-08 12:48:12,948 INFO L290 TraceCheckUtils]: 9: Hoare triple {565#true} assume true; {565#true} is VALID [2022-04-08 12:48:12,948 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {565#true} {565#true} #55#return; {565#true} is VALID [2022-04-08 12:48:12,948 INFO L290 TraceCheckUtils]: 11: Hoare triple {565#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5; {565#true} is VALID [2022-04-08 12:48:12,948 INFO L272 TraceCheckUtils]: 12: Hoare triple {565#true} call assume_abort_if_not((if ~a~0 >= 0 && ~a~0 <= 2 then 1 else 0)); {565#true} is VALID [2022-04-08 12:48:12,948 INFO L290 TraceCheckUtils]: 13: Hoare triple {565#true} ~cond := #in~cond; {565#true} is VALID [2022-04-08 12:48:12,949 INFO L290 TraceCheckUtils]: 14: Hoare triple {565#true} assume !(0 == ~cond); {565#true} is VALID [2022-04-08 12:48:12,949 INFO L290 TraceCheckUtils]: 15: Hoare triple {565#true} assume true; {565#true} is VALID [2022-04-08 12:48:12,949 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {565#true} {565#true} #57#return; {565#true} is VALID [2022-04-08 12:48:12,949 INFO L290 TraceCheckUtils]: 17: Hoare triple {565#true} assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6; {565#true} is VALID [2022-04-08 12:48:12,949 INFO L272 TraceCheckUtils]: 18: Hoare triple {565#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 2 then 1 else 0)); {565#true} is VALID [2022-04-08 12:48:12,950 INFO L290 TraceCheckUtils]: 19: Hoare triple {565#true} ~cond := #in~cond; {627#(= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)} is VALID [2022-04-08 12:48:12,950 INFO L290 TraceCheckUtils]: 20: Hoare triple {627#(= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)} assume !(0 == ~cond); {631#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-08 12:48:12,950 INFO L290 TraceCheckUtils]: 21: Hoare triple {631#(not (= |assume_abort_if_not_#in~cond| 0))} assume true; {631#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-08 12:48:12,951 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {631#(not (= |assume_abort_if_not_#in~cond| 0))} {565#true} #59#return; {565#true} is VALID [2022-04-08 12:48:12,951 INFO L290 TraceCheckUtils]: 23: Hoare triple {565#true} ~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {641#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-08 12:48:12,953 INFO L290 TraceCheckUtils]: 24: Hoare triple {641#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !false; {641#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-08 12:48:12,953 INFO L272 TraceCheckUtils]: 25: Hoare triple {641#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {565#true} is VALID [2022-04-08 12:48:12,953 INFO L290 TraceCheckUtils]: 26: Hoare triple {565#true} ~cond := #in~cond; {651#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-08 12:48:12,954 INFO L290 TraceCheckUtils]: 27: Hoare triple {651#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {655#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 12:48:12,954 INFO L290 TraceCheckUtils]: 28: Hoare triple {655#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {655#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 12:48:12,957 INFO L284 TraceCheckUtils]: 29: Hoare quadruple {655#(not (= |__VERIFIER_assert_#in~cond| 0))} {641#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} #61#return; {641#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-08 12:48:12,958 INFO L290 TraceCheckUtils]: 30: Hoare triple {641#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {665#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-08 12:48:12,958 INFO L290 TraceCheckUtils]: 31: Hoare triple {665#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !false; {665#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-08 12:48:13,084 INFO L272 TraceCheckUtils]: 32: Hoare triple {665#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {672#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 12:48:13,085 INFO L290 TraceCheckUtils]: 33: Hoare triple {672#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {676#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 12:48:13,085 INFO L290 TraceCheckUtils]: 34: Hoare triple {676#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {566#false} is VALID [2022-04-08 12:48:13,085 INFO L290 TraceCheckUtils]: 35: Hoare triple {566#false} assume !false; {566#false} is VALID [2022-04-08 12:48:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-04-08 12:48:13,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 12:48:20,782 INFO L290 TraceCheckUtils]: 35: Hoare triple {566#false} assume !false; {566#false} is VALID [2022-04-08 12:48:20,782 INFO L290 TraceCheckUtils]: 34: Hoare triple {676#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {566#false} is VALID [2022-04-08 12:48:20,783 INFO L290 TraceCheckUtils]: 33: Hoare triple {672#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {676#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 12:48:20,784 INFO L272 TraceCheckUtils]: 32: Hoare triple {692#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {672#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 12:48:20,784 INFO L290 TraceCheckUtils]: 31: Hoare triple {692#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} assume !false; {692#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-08 12:48:20,836 INFO L290 TraceCheckUtils]: 30: Hoare triple {699#(= (+ (* main_~z~0 main_~x~0) main_~a~0 (* main_~az~0 (* main_~z~0 main_~y~0))) (+ main_~a~0 (* main_~z~0 (+ (* main_~z~0 main_~x~0) main_~a~0))))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {692#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-08 12:48:20,840 INFO L284 TraceCheckUtils]: 29: Hoare quadruple {655#(not (= |__VERIFIER_assert_#in~cond| 0))} {565#true} #61#return; {699#(= (+ (* main_~z~0 main_~x~0) main_~a~0 (* main_~az~0 (* main_~z~0 main_~y~0))) (+ main_~a~0 (* main_~z~0 (+ (* main_~z~0 main_~x~0) main_~a~0))))} is VALID [2022-04-08 12:48:20,841 INFO L290 TraceCheckUtils]: 28: Hoare triple {655#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {655#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 12:48:20,841 INFO L290 TraceCheckUtils]: 27: Hoare triple {712#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {655#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 12:48:20,842 INFO L290 TraceCheckUtils]: 26: Hoare triple {565#true} ~cond := #in~cond; {712#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-08 12:48:20,842 INFO L272 TraceCheckUtils]: 25: Hoare triple {565#true} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {565#true} is VALID [2022-04-08 12:48:20,843 INFO L290 TraceCheckUtils]: 24: Hoare triple {565#true} assume !false; {565#true} is VALID [2022-04-08 12:48:20,843 INFO L290 TraceCheckUtils]: 23: Hoare triple {565#true} ~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {565#true} is VALID [2022-04-08 12:48:20,843 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {565#true} {565#true} #59#return; {565#true} is VALID [2022-04-08 12:48:20,843 INFO L290 TraceCheckUtils]: 21: Hoare triple {565#true} assume true; {565#true} is VALID [2022-04-08 12:48:20,843 INFO L290 TraceCheckUtils]: 20: Hoare triple {565#true} assume !(0 == ~cond); {565#true} is VALID [2022-04-08 12:48:20,843 INFO L290 TraceCheckUtils]: 19: Hoare triple {565#true} ~cond := #in~cond; {565#true} is VALID [2022-04-08 12:48:20,844 INFO L272 TraceCheckUtils]: 18: Hoare triple {565#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 2 then 1 else 0)); {565#true} is VALID [2022-04-08 12:48:20,844 INFO L290 TraceCheckUtils]: 17: Hoare triple {565#true} assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6; {565#true} is VALID [2022-04-08 12:48:20,844 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {565#true} {565#true} #57#return; {565#true} is VALID [2022-04-08 12:48:20,844 INFO L290 TraceCheckUtils]: 15: Hoare triple {565#true} assume true; {565#true} is VALID [2022-04-08 12:48:20,844 INFO L290 TraceCheckUtils]: 14: Hoare triple {565#true} assume !(0 == ~cond); {565#true} is VALID [2022-04-08 12:48:20,844 INFO L290 TraceCheckUtils]: 13: Hoare triple {565#true} ~cond := #in~cond; {565#true} is VALID [2022-04-08 12:48:20,844 INFO L272 TraceCheckUtils]: 12: Hoare triple {565#true} call assume_abort_if_not((if ~a~0 >= 0 && ~a~0 <= 2 then 1 else 0)); {565#true} is VALID [2022-04-08 12:48:20,845 INFO L290 TraceCheckUtils]: 11: Hoare triple {565#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5; {565#true} is VALID [2022-04-08 12:48:20,845 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {565#true} {565#true} #55#return; {565#true} is VALID [2022-04-08 12:48:20,845 INFO L290 TraceCheckUtils]: 9: Hoare triple {565#true} assume true; {565#true} is VALID [2022-04-08 12:48:20,845 INFO L290 TraceCheckUtils]: 8: Hoare triple {565#true} assume !(0 == ~cond); {565#true} is VALID [2022-04-08 12:48:20,845 INFO L290 TraceCheckUtils]: 7: Hoare triple {565#true} ~cond := #in~cond; {565#true} is VALID [2022-04-08 12:48:20,845 INFO L272 TraceCheckUtils]: 6: Hoare triple {565#true} call assume_abort_if_not((if ~z~0 >= 0 && ~z~0 <= 2 then 1 else 0)); {565#true} is VALID [2022-04-08 12:48:20,846 INFO L290 TraceCheckUtils]: 5: Hoare triple {565#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4; {565#true} is VALID [2022-04-08 12:48:20,846 INFO L272 TraceCheckUtils]: 4: Hoare triple {565#true} call #t~ret7 := main(); {565#true} is VALID [2022-04-08 12:48:20,846 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {565#true} {565#true} #65#return; {565#true} is VALID [2022-04-08 12:48:20,846 INFO L290 TraceCheckUtils]: 2: Hoare triple {565#true} assume true; {565#true} is VALID [2022-04-08 12:48:20,846 INFO L290 TraceCheckUtils]: 1: Hoare triple {565#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {565#true} is VALID [2022-04-08 12:48:20,846 INFO L272 TraceCheckUtils]: 0: Hoare triple {565#true} call ULTIMATE.init(); {565#true} is VALID [2022-04-08 12:48:20,847 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-08 12:48:20,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:48:20,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637582448] [2022-04-08 12:48:20,847 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 12:48:20,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986146363] [2022-04-08 12:48:20,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986146363] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 12:48:20,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-08 12:48:20,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 13 [2022-04-08 12:48:20,848 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:48:20,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [522889932] [2022-04-08 12:48:20,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [522889932] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:48:20,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:48:20,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-08 12:48:20,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546139518] [2022-04-08 12:48:20,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:48:20,849 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2022-04-08 12:48:20,849 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:48:20,849 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:48:20,912 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:48:20,912 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-08 12:48:20,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:48:20,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-08 12:48:20,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-04-08 12:48:20,913 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:48:22,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:48:22,179 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2022-04-08 12:48:22,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-08 12:48:22,179 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2022-04-08 12:48:22,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:48:22,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:48:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 44 transitions. [2022-04-08 12:48:22,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:48:22,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 44 transitions. [2022-04-08 12:48:22,183 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 10 states and 44 transitions. [2022-04-08 12:48:22,362 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:48:22,363 INFO L225 Difference]: With dead ends: 43 [2022-04-08 12:48:22,363 INFO L226 Difference]: Without dead ends: 40 [2022-04-08 12:48:22,364 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-04-08 12:48:22,365 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-08 12:48:22,365 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 149 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-08 12:48:22,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-04-08 12:48:22,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-04-08 12:48:22,387 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:48:22,387 INFO L82 GeneralOperation]: Start isEquivalent. First operand 40 states. Second operand has 40 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:48:22,387 INFO L74 IsIncluded]: Start isIncluded. First operand 40 states. Second operand has 40 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:48:22,388 INFO L87 Difference]: Start difference. First operand 40 states. Second operand has 40 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:48:22,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:48:22,390 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2022-04-08 12:48:22,390 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2022-04-08 12:48:22,391 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:48:22,391 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:48:22,391 INFO L74 IsIncluded]: Start isIncluded. First operand has 40 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand 40 states. [2022-04-08 12:48:22,391 INFO L87 Difference]: Start difference. First operand has 40 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand 40 states. [2022-04-08 12:48:22,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:48:22,393 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2022-04-08 12:48:22,394 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2022-04-08 12:48:22,394 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:48:22,394 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:48:22,394 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:48:22,394 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:48:22,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:48:22,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2022-04-08 12:48:22,396 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 36 [2022-04-08 12:48:22,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:48:22,396 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2022-04-08 12:48:22,397 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:48:22,397 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 40 states and 43 transitions. [2022-04-08 12:48:22,467 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:48:22,468 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2022-04-08 12:48:22,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-08 12:48:22,468 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:48:22,468 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:48:22,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-08 12:48:22,671 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 12:48:22,671 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:48:22,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:48:22,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1540046462, now seen corresponding path program 3 times [2022-04-08 12:48:22,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:48:22,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1240157084] [2022-04-08 12:48:22,673 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:48:22,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1540046462, now seen corresponding path program 4 times [2022-04-08 12:48:22,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:48:22,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820938659] [2022-04-08 12:48:22,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:48:22,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:48:22,697 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 12:48:22,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945306265] [2022-04-08 12:48:22,698 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-08 12:48:22,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:48:22,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:48:22,705 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 12:48:22,741 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 12:48:22,765 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-08 12:48:22,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 12:48:22,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-08 12:48:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:48:22,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 12:48:22,989 INFO L272 TraceCheckUtils]: 0: Hoare triple {1045#true} call ULTIMATE.init(); {1045#true} is VALID [2022-04-08 12:48:22,989 INFO L290 TraceCheckUtils]: 1: Hoare triple {1045#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {1045#true} is VALID [2022-04-08 12:48:22,989 INFO L290 TraceCheckUtils]: 2: Hoare triple {1045#true} assume true; {1045#true} is VALID [2022-04-08 12:48:22,989 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1045#true} {1045#true} #65#return; {1045#true} is VALID [2022-04-08 12:48:22,990 INFO L272 TraceCheckUtils]: 4: Hoare triple {1045#true} call #t~ret7 := main(); {1045#true} is VALID [2022-04-08 12:48:22,990 INFO L290 TraceCheckUtils]: 5: Hoare triple {1045#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4; {1045#true} is VALID [2022-04-08 12:48:22,990 INFO L272 TraceCheckUtils]: 6: Hoare triple {1045#true} call assume_abort_if_not((if ~z~0 >= 0 && ~z~0 <= 2 then 1 else 0)); {1045#true} is VALID [2022-04-08 12:48:22,990 INFO L290 TraceCheckUtils]: 7: Hoare triple {1045#true} ~cond := #in~cond; {1045#true} is VALID [2022-04-08 12:48:22,990 INFO L290 TraceCheckUtils]: 8: Hoare triple {1045#true} assume !(0 == ~cond); {1045#true} is VALID [2022-04-08 12:48:22,990 INFO L290 TraceCheckUtils]: 9: Hoare triple {1045#true} assume true; {1045#true} is VALID [2022-04-08 12:48:22,990 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1045#true} {1045#true} #55#return; {1045#true} is VALID [2022-04-08 12:48:22,990 INFO L290 TraceCheckUtils]: 11: Hoare triple {1045#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5; {1045#true} is VALID [2022-04-08 12:48:22,991 INFO L272 TraceCheckUtils]: 12: Hoare triple {1045#true} call assume_abort_if_not((if ~a~0 >= 0 && ~a~0 <= 2 then 1 else 0)); {1045#true} is VALID [2022-04-08 12:48:22,991 INFO L290 TraceCheckUtils]: 13: Hoare triple {1045#true} ~cond := #in~cond; {1045#true} is VALID [2022-04-08 12:48:22,991 INFO L290 TraceCheckUtils]: 14: Hoare triple {1045#true} assume !(0 == ~cond); {1045#true} is VALID [2022-04-08 12:48:22,991 INFO L290 TraceCheckUtils]: 15: Hoare triple {1045#true} assume true; {1045#true} is VALID [2022-04-08 12:48:22,991 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {1045#true} {1045#true} #57#return; {1045#true} is VALID [2022-04-08 12:48:22,991 INFO L290 TraceCheckUtils]: 17: Hoare triple {1045#true} assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6; {1045#true} is VALID [2022-04-08 12:48:22,991 INFO L272 TraceCheckUtils]: 18: Hoare triple {1045#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 2 then 1 else 0)); {1045#true} is VALID [2022-04-08 12:48:22,992 INFO L290 TraceCheckUtils]: 19: Hoare triple {1045#true} ~cond := #in~cond; {1107#(= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)} is VALID [2022-04-08 12:48:22,992 INFO L290 TraceCheckUtils]: 20: Hoare triple {1107#(= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)} assume !(0 == ~cond); {1111#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-08 12:48:22,993 INFO L290 TraceCheckUtils]: 21: Hoare triple {1111#(not (= |assume_abort_if_not_#in~cond| 0))} assume true; {1111#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-08 12:48:22,993 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {1111#(not (= |assume_abort_if_not_#in~cond| 0))} {1045#true} #59#return; {1118#(and (<= 0 main_~k~0) (<= main_~k~0 2))} is VALID [2022-04-08 12:48:22,994 INFO L290 TraceCheckUtils]: 23: Hoare triple {1118#(and (<= 0 main_~k~0) (<= main_~k~0 2))} ~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {1122#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 2))} is VALID [2022-04-08 12:48:22,994 INFO L290 TraceCheckUtils]: 24: Hoare triple {1122#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 2))} assume !false; {1122#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 2))} is VALID [2022-04-08 12:48:22,995 INFO L272 TraceCheckUtils]: 25: Hoare triple {1122#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 2))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {1045#true} is VALID [2022-04-08 12:48:22,995 INFO L290 TraceCheckUtils]: 26: Hoare triple {1045#true} ~cond := #in~cond; {1045#true} is VALID [2022-04-08 12:48:22,995 INFO L290 TraceCheckUtils]: 27: Hoare triple {1045#true} assume !(0 == ~cond); {1045#true} is VALID [2022-04-08 12:48:22,995 INFO L290 TraceCheckUtils]: 28: Hoare triple {1045#true} assume true; {1045#true} is VALID [2022-04-08 12:48:22,996 INFO L284 TraceCheckUtils]: 29: Hoare quadruple {1045#true} {1122#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 2))} #61#return; {1122#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 2))} is VALID [2022-04-08 12:48:22,997 INFO L290 TraceCheckUtils]: 30: Hoare triple {1122#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 2))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {1144#(and (<= 0 main_~k~0) (<= main_~k~0 2) (<= 2 main_~c~0))} is VALID [2022-04-08 12:48:22,997 INFO L290 TraceCheckUtils]: 31: Hoare triple {1144#(and (<= 0 main_~k~0) (<= main_~k~0 2) (<= 2 main_~c~0))} assume !false; {1144#(and (<= 0 main_~k~0) (<= main_~k~0 2) (<= 2 main_~c~0))} is VALID [2022-04-08 12:48:22,997 INFO L272 TraceCheckUtils]: 32: Hoare triple {1144#(and (<= 0 main_~k~0) (<= main_~k~0 2) (<= 2 main_~c~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {1045#true} is VALID [2022-04-08 12:48:22,997 INFO L290 TraceCheckUtils]: 33: Hoare triple {1045#true} ~cond := #in~cond; {1045#true} is VALID [2022-04-08 12:48:22,997 INFO L290 TraceCheckUtils]: 34: Hoare triple {1045#true} assume !(0 == ~cond); {1045#true} is VALID [2022-04-08 12:48:22,998 INFO L290 TraceCheckUtils]: 35: Hoare triple {1045#true} assume true; {1045#true} is VALID [2022-04-08 12:48:22,998 INFO L284 TraceCheckUtils]: 36: Hoare quadruple {1045#true} {1144#(and (<= 0 main_~k~0) (<= main_~k~0 2) (<= 2 main_~c~0))} #61#return; {1144#(and (<= 0 main_~k~0) (<= main_~k~0 2) (<= 2 main_~c~0))} is VALID [2022-04-08 12:48:22,999 INFO L290 TraceCheckUtils]: 37: Hoare triple {1144#(and (<= 0 main_~k~0) (<= main_~k~0 2) (<= 2 main_~c~0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {1046#false} is VALID [2022-04-08 12:48:22,999 INFO L290 TraceCheckUtils]: 38: Hoare triple {1046#false} assume !false; {1046#false} is VALID [2022-04-08 12:48:22,999 INFO L272 TraceCheckUtils]: 39: Hoare triple {1046#false} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {1046#false} is VALID [2022-04-08 12:48:22,999 INFO L290 TraceCheckUtils]: 40: Hoare triple {1046#false} ~cond := #in~cond; {1046#false} is VALID [2022-04-08 12:48:22,999 INFO L290 TraceCheckUtils]: 41: Hoare triple {1046#false} assume 0 == ~cond; {1046#false} is VALID [2022-04-08 12:48:23,000 INFO L290 TraceCheckUtils]: 42: Hoare triple {1046#false} assume !false; {1046#false} is VALID [2022-04-08 12:48:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-04-08 12:48:23,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 12:48:23,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:48:23,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820938659] [2022-04-08 12:48:23,000 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 12:48:23,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945306265] [2022-04-08 12:48:23,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945306265] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:48:23,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:48:23,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 12:48:23,001 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:48:23,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1240157084] [2022-04-08 12:48:23,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1240157084] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:48:23,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:48:23,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 12:48:23,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661617800] [2022-04-08 12:48:23,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:48:23,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2022-04-08 12:48:23,002 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:48:23,003 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-08 12:48:23,033 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 12:48:23,033 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-08 12:48:23,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:48:23,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-08 12:48:23,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-08 12:48:23,034 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-08 12:48:23,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:48:23,206 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2022-04-08 12:48:23,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 12:48:23,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2022-04-08 12:48:23,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:48:23,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-08 12:48:23,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 40 transitions. [2022-04-08 12:48:23,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-08 12:48:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 40 transitions. [2022-04-08 12:48:23,210 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 40 transitions. [2022-04-08 12:48:23,241 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:48:23,241 INFO L225 Difference]: With dead ends: 40 [2022-04-08 12:48:23,241 INFO L226 Difference]: Without dead ends: 0 [2022-04-08 12:48:23,242 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-04-08 12:48:23,243 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 12:48:23,243 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 105 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 12:48:23,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-08 12:48:23,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-08 12:48:23,245 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:48:23,245 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-08 12:48:23,245 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-08 12:48:23,245 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-08 12:48:23,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:48:23,246 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 12:48:23,246 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 12:48:23,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:48:23,246 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:48:23,246 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-08 12:48:23,246 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-08 12:48:23,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:48:23,246 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 12:48:23,246 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 12:48:23,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:48:23,247 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:48:23,247 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:48:23,247 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:48:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-08 12:48:23,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-08 12:48:23,247 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2022-04-08 12:48:23,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:48:23,247 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-08 12:48:23,247 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-08 12:48:23,247 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-08 12:48:23,247 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:48:23,248 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 12:48:23,248 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:48:23,250 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-08 12:48:23,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-08 12:48:23,475 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 12:48:23,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-08 12:48:23,659 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2022-04-08 12:48:23,659 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2022-04-08 12:48:23,659 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2022-04-08 12:48:23,660 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-04-08 12:48:23,660 INFO L878 garLoopResultBuilder]: At program point L12(line 12) the Hoare annotation is: (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|) [2022-04-08 12:48:23,660 INFO L878 garLoopResultBuilder]: At program point L12-2(lines 11 13) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-08 12:48:23,660 INFO L878 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 11 13) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-08 12:48:23,660 INFO L885 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true [2022-04-08 12:48:23,660 INFO L878 garLoopResultBuilder]: At program point L29-1(line 29) the Hoare annotation is: (and (<= 0 main_~k~0) (<= main_~k~0 2)) [2022-04-08 12:48:23,660 INFO L885 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2022-04-08 12:48:23,660 INFO L885 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: true [2022-04-08 12:48:23,660 INFO L885 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-04-08 12:48:23,661 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 21 48) the Hoare annotation is: true [2022-04-08 12:48:23,661 INFO L885 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: true [2022-04-08 12:48:23,661 INFO L885 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: true [2022-04-08 12:48:23,661 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 21 48) the Hoare annotation is: true [2022-04-08 12:48:23,661 INFO L878 garLoopResultBuilder]: At program point L36-2(lines 36 45) the Hoare annotation is: (let ((.cse2 (* main_~a~0 main_~z~0))) (let ((.cse0 (<= 0 main_~k~0)) (.cse1 (<= main_~k~0 2)) (.cse3 (= .cse2 main_~az~0))) (or (and (= main_~z~0 main_~y~0) .cse0 .cse1 (<= 2 main_~c~0) (= main_~x~0 (+ .cse2 main_~a~0)) .cse3) (and (<= 1 main_~c~0) .cse0 (= main_~y~0 1) .cse1 (= main_~a~0 main_~x~0) .cse3)))) [2022-04-08 12:48:23,661 INFO L878 garLoopResultBuilder]: At program point L36-3(lines 36 45) the Hoare annotation is: (let ((.cse1 (* main_~a~0 main_~z~0))) (let ((.cse0 (= .cse1 main_~az~0))) (or (and (= main_~y~0 1) (= main_~a~0 main_~x~0) .cse0) (and (= main_~z~0 main_~y~0) (= main_~x~0 (+ .cse1 main_~a~0)) .cse0)))) [2022-04-08 12:48:23,661 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 21 48) the Hoare annotation is: true [2022-04-08 12:48:23,661 INFO L878 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse2 (* main_~a~0 main_~z~0))) (let ((.cse0 (<= 0 main_~k~0)) (.cse1 (<= main_~k~0 2)) (.cse3 (= .cse2 main_~az~0))) (or (and (= main_~z~0 main_~y~0) .cse0 .cse1 (<= 2 main_~c~0) (= main_~x~0 (+ .cse2 main_~a~0)) .cse3) (and (<= 1 main_~c~0) .cse0 (= main_~y~0 1) .cse1 (= main_~a~0 main_~x~0) .cse3)))) [2022-04-08 12:48:23,662 INFO L878 garLoopResultBuilder]: At program point L37-1(lines 36 45) the Hoare annotation is: (let ((.cse2 (* main_~a~0 main_~z~0))) (let ((.cse0 (<= 0 main_~k~0)) (.cse1 (<= main_~k~0 2)) (.cse3 (= .cse2 main_~az~0))) (or (and (= main_~z~0 main_~y~0) .cse0 .cse1 (<= 2 main_~c~0) (= main_~x~0 (+ .cse2 main_~a~0)) .cse3) (and (<= 1 main_~c~0) .cse0 (= main_~y~0 1) .cse1 (= main_~a~0 main_~x~0) .cse3)))) [2022-04-08 12:48:23,662 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-08 12:48:23,662 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-08 12:48:23,662 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-08 12:48:23,662 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-08 12:48:23,662 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-08 12:48:23,662 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-08 12:48:23,662 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-08 12:48:23,662 INFO L878 garLoopResultBuilder]: At program point L16(lines 16 17) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-08 12:48:23,662 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-08 12:48:23,663 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-04-08 12:48:23,663 INFO L878 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-08 12:48:23,663 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-08 12:48:23,663 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-08 12:48:23,666 INFO L719 BasicCegarLoop]: Path program histogram: [4, 2, 2] [2022-04-08 12:48:23,667 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-08 12:48:23,669 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-08 12:48:23,679 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-08 12:48:23,705 INFO L163 areAnnotationChecker]: CFG has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-08 12:48:23,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.04 12:48:23 BoogieIcfgContainer [2022-04-08 12:48:23,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-08 12:48:23,716 INFO L158 Benchmark]: Toolchain (without parser) took 13479.18ms. Allocated memory was 182.5MB in the beginning and 219.2MB in the end (delta: 36.7MB). Free memory was 132.8MB in the beginning and 102.9MB in the end (delta: 29.9MB). Peak memory consumption was 65.8MB. Max. memory is 8.0GB. [2022-04-08 12:48:23,717 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory was 149.4MB in the beginning and 149.3MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 12:48:23,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.22ms. Allocated memory is still 182.5MB. Free memory was 132.7MB in the beginning and 157.4MB in the end (delta: -24.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-08 12:48:23,717 INFO L158 Benchmark]: Boogie Preprocessor took 44.56ms. Allocated memory is still 182.5MB. Free memory was 157.4MB in the beginning and 156.1MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-08 12:48:23,718 INFO L158 Benchmark]: RCFGBuilder took 305.25ms. Allocated memory is still 182.5MB. Free memory was 155.8MB in the beginning and 144.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-08 12:48:23,718 INFO L158 Benchmark]: TraceAbstraction took 12869.52ms. Allocated memory was 182.5MB in the beginning and 219.2MB in the end (delta: 36.7MB). Free memory was 143.7MB in the beginning and 102.9MB in the end (delta: 40.8MB). Peak memory consumption was 78.0MB. Max. memory is 8.0GB. [2022-04-08 12:48:23,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory was 149.4MB in the beginning and 149.3MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 255.22ms. Allocated memory is still 182.5MB. Free memory was 132.7MB in the beginning and 157.4MB in the end (delta: -24.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.56ms. Allocated memory is still 182.5MB. Free memory was 157.4MB in the beginning and 156.1MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 305.25ms. Allocated memory is still 182.5MB. Free memory was 155.8MB in the beginning and 144.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 12869.52ms. Allocated memory was 182.5MB in the beginning and 219.2MB in the end (delta: 36.7MB). Free memory was 143.7MB in the beginning and 102.9MB in the end (delta: 40.8MB). Peak memory consumption was 78.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.8s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 48 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 379 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 279 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 211 IncrementalHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 100 mSDtfsCounter, 211 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=3, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 31 LocationsWithAnnotation, 89 PreInvPairs, 129 NumberOfFragments, 252 HoareAnnotationTreeSize, 89 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 31 FomulaSimplificationsInter, 72 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((z == y && 0 <= k) && k <= 2) && 2 <= c) && x == a * z + a) && a * z == az) || (((((1 <= c && 0 <= k) && y == 1) && k <= 2) && a == x) && a * z == az) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: !(\old(cond) == 0) && cond == \old(cond) - ProcedureContractResult [Line: 21]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == cond || !(1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2022-04-08 12:48:23,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...