/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 04:09:11,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 04:09:11,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 04:09:11,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 04:09:11,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 04:09:11,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 04:09:11,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 04:09:11,301 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-08 04:09:11,310 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 04:09:11,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 04:09:11,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 04:09:11,312 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-08 04:09:11,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 04:09:11,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-08 04:09:11,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 04:09:11,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 04:09:11,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 04:09:11,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 04:09:11,314 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-08 04:09:11,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 04:09:11,314 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 04:09:11,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 04:09:11,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 04:09:11,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 04:09:11,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 04:09:11,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 04:09:11,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 04:09:11,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 04:09:11,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 04:09:11,315 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 04:09:11,315 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 04:09:11,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 04:09:11,316 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-08 04:09:11,316 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 04:09:11,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 04:09:11,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 04:09:11,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 04:09:11,565 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 04:09:11,565 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 04:09:11,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_10.c [2022-04-08 04:09:11,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de297893c/6f02fc9e7c7d4ca699b4314957fdf29a/FLAGab84a5404 [2022-04-08 04:09:11,971 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 04:09:11,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_10.c [2022-04-08 04:09:11,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de297893c/6f02fc9e7c7d4ca699b4314957fdf29a/FLAGab84a5404 [2022-04-08 04:09:12,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de297893c/6f02fc9e7c7d4ca699b4314957fdf29a [2022-04-08 04:09:12,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 04:09:12,394 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 04:09:12,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 04:09:12,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 04:09:12,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 04:09:12,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 04:09:12" (1/1) ... [2022-04-08 04:09:12,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ca1ada3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:09:12, skipping insertion in model container [2022-04-08 04:09:12,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 04:09:12" (1/1) ... [2022-04-08 04:09:12,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 04:09:12,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 04:09:12,540 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_10.c[319,332] [2022-04-08 04:09:12,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 04:09:12,570 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 04:09:12,580 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_10.c[319,332] [2022-04-08 04:09:12,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 04:09:12,594 INFO L208 MainTranslator]: Completed translation [2022-04-08 04:09:12,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:09:12 WrapperNode [2022-04-08 04:09:12,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 04:09:12,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 04:09:12,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 04:09:12,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 04:09:12,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:09:12" (1/1) ... [2022-04-08 04:09:12,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:09:12" (1/1) ... [2022-04-08 04:09:12,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:09:12" (1/1) ... [2022-04-08 04:09:12,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:09:12" (1/1) ... [2022-04-08 04:09:12,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:09:12" (1/1) ... [2022-04-08 04:09:12,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:09:12" (1/1) ... [2022-04-08 04:09:12,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:09:12" (1/1) ... [2022-04-08 04:09:12,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 04:09:12,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 04:09:12,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 04:09:12,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 04:09:12,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:09:12" (1/1) ... [2022-04-08 04:09:12,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 04:09:12,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 04:09:12,664 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 04:09:12,668 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 04:09:12,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 04:09:12,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 04:09:12,695 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 04:09:12,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 04:09:12,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 04:09:12,695 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 04:09:12,695 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 04:09:12,695 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 04:09:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 04:09:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 04:09:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 04:09:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 04:09:12,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 04:09:12,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 04:09:12,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 04:09:12,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 04:09:12,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 04:09:12,747 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 04:09:12,749 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 04:09:12,913 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 04:09:12,918 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 04:09:12,918 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-08 04:09:12,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 04:09:12 BoogieIcfgContainer [2022-04-08 04:09:12,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 04:09:12,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 04:09:12,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 04:09:12,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 04:09:12,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 04:09:12" (1/3) ... [2022-04-08 04:09:12,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bff3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 04:09:12, skipping insertion in model container [2022-04-08 04:09:12,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:09:12" (2/3) ... [2022-04-08 04:09:12,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bff3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 04:09:12, skipping insertion in model container [2022-04-08 04:09:12,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 04:09:12" (3/3) ... [2022-04-08 04:09:12,926 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_10.c [2022-04-08 04:09:12,930 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 04:09:12,930 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 04:09:12,961 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 04:09:12,966 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 04:09:12,967 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 04:09:12,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 04:09:12,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-08 04:09:12,986 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 04:09:12,986 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 04:09:12,987 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 04:09:12,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 04:09:12,991 INFO L85 PathProgramCache]: Analyzing trace with hash -2135496849, now seen corresponding path program 1 times [2022-04-08 04:09:12,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 04:09:12,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [106004945] [2022-04-08 04:09:13,007 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 04:09:13,007 INFO L85 PathProgramCache]: Analyzing trace with hash -2135496849, now seen corresponding path program 2 times [2022-04-08 04:09:13,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 04:09:13,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520058312] [2022-04-08 04:09:13,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 04:09:13,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 04:09:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:09:13,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 04:09:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:09:13,182 INFO L290 TraceCheckUtils]: 0: Hoare triple {29#(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(18, 2);call #Ultimate.allocInit(12, 3); {24#true} is VALID [2022-04-08 04:09:13,183 INFO L290 TraceCheckUtils]: 1: Hoare triple {24#true} assume true; {24#true} is VALID [2022-04-08 04:09:13,183 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {24#true} {24#true} #42#return; {24#true} is VALID [2022-04-08 04:09:13,185 INFO L272 TraceCheckUtils]: 0: Hoare triple {24#true} call ULTIMATE.init(); {29#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 04:09:13,186 INFO L290 TraceCheckUtils]: 1: Hoare triple {29#(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(18, 2);call #Ultimate.allocInit(12, 3); {24#true} is VALID [2022-04-08 04:09:13,186 INFO L290 TraceCheckUtils]: 2: Hoare triple {24#true} assume true; {24#true} is VALID [2022-04-08 04:09:13,186 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {24#true} {24#true} #42#return; {24#true} is VALID [2022-04-08 04:09:13,187 INFO L272 TraceCheckUtils]: 4: Hoare triple {24#true} call #t~ret6 := main(); {24#true} is VALID [2022-04-08 04:09:13,187 INFO L290 TraceCheckUtils]: 5: Hoare triple {24#true} ~x~0 := 0;~y~0 := 10000000;~z~0 := 5000000; {24#true} is VALID [2022-04-08 04:09:13,188 INFO L290 TraceCheckUtils]: 6: Hoare triple {24#true} assume !true; {25#false} is VALID [2022-04-08 04:09:13,188 INFO L272 TraceCheckUtils]: 7: Hoare triple {25#false} call __VERIFIER_assert((if ~z~0 % 4294967296 == ~x~0 % 4294967296 then 1 else 0)); {25#false} is VALID [2022-04-08 04:09:13,188 INFO L290 TraceCheckUtils]: 8: Hoare triple {25#false} ~cond := #in~cond; {25#false} is VALID [2022-04-08 04:09:13,189 INFO L290 TraceCheckUtils]: 9: Hoare triple {25#false} assume 0 == ~cond; {25#false} is VALID [2022-04-08 04:09:13,190 INFO L290 TraceCheckUtils]: 10: Hoare triple {25#false} assume !false; {25#false} is VALID [2022-04-08 04:09:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 04:09:13,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 04:09:13,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520058312] [2022-04-08 04:09:13,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520058312] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:09:13,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:09:13,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 04:09:13,197 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 04:09:13,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [106004945] [2022-04-08 04:09:13,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [106004945] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:09:13,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:09:13,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 04:09:13,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741444387] [2022-04-08 04:09:13,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 04:09:13,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-08 04:09:13,205 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 04:09:13,208 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,230 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:09:13,230 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 04:09:13,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 04:09:13,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 04:09:13,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 04:09:13,256 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:09:13,356 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-04-08 04:09:13,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 04:09:13,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-08 04:09:13,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 04:09:13,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2022-04-08 04:09:13,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2022-04-08 04:09:13,369 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 37 transitions. [2022-04-08 04:09:13,428 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 04:09:13,435 INFO L225 Difference]: With dead ends: 33 [2022-04-08 04:09:13,436 INFO L226 Difference]: Without dead ends: 14 [2022-04-08 04:09:13,438 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 04:09:13,441 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 04:09:13,444 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 04:09:13,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-04-08 04:09:13,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-04-08 04:09:13,476 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 04:09:13,477 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,477 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,478 INFO L87 Difference]: Start difference. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:09:13,486 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-04-08 04:09:13,487 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-08 04:09:13,487 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:09:13,487 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:09:13,488 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-04-08 04:09:13,488 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-04-08 04:09:13,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:09:13,493 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-04-08 04:09:13,493 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-08 04:09:13,493 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:09:13,493 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:09:13,494 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 04:09:13,494 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 04:09:13,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-04-08 04:09:13,497 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2022-04-08 04:09:13,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 04:09:13,497 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-04-08 04:09:13,498 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,498 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 14 states and 15 transitions. [2022-04-08 04:09:13,521 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:09:13,522 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-08 04:09:13,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-08 04:09:13,525 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 04:09:13,525 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 04:09:13,529 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 04:09:13,529 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 04:09:13,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 04:09:13,532 INFO L85 PathProgramCache]: Analyzing trace with hash -2145655580, now seen corresponding path program 1 times [2022-04-08 04:09:13,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 04:09:13,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1958887090] [2022-04-08 04:09:13,536 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 04:09:13,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2145655580, now seen corresponding path program 2 times [2022-04-08 04:09:13,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 04:09:13,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405710202] [2022-04-08 04:09:13,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 04:09:13,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 04:09:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:09:13,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 04:09:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:09:13,664 INFO L290 TraceCheckUtils]: 0: Hoare triple {160#(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(18, 2);call #Ultimate.allocInit(12, 3); {154#true} is VALID [2022-04-08 04:09:13,665 INFO L290 TraceCheckUtils]: 1: Hoare triple {154#true} assume true; {154#true} is VALID [2022-04-08 04:09:13,665 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {154#true} {154#true} #42#return; {154#true} is VALID [2022-04-08 04:09:13,666 INFO L272 TraceCheckUtils]: 0: Hoare triple {154#true} call ULTIMATE.init(); {160#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 04:09:13,666 INFO L290 TraceCheckUtils]: 1: Hoare triple {160#(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(18, 2);call #Ultimate.allocInit(12, 3); {154#true} is VALID [2022-04-08 04:09:13,666 INFO L290 TraceCheckUtils]: 2: Hoare triple {154#true} assume true; {154#true} is VALID [2022-04-08 04:09:13,666 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {154#true} {154#true} #42#return; {154#true} is VALID [2022-04-08 04:09:13,667 INFO L272 TraceCheckUtils]: 4: Hoare triple {154#true} call #t~ret6 := main(); {154#true} is VALID [2022-04-08 04:09:13,667 INFO L290 TraceCheckUtils]: 5: Hoare triple {154#true} ~x~0 := 0;~y~0 := 10000000;~z~0 := 5000000; {159#(and (= main_~x~0 0) (<= 10000000 main_~y~0) (<= (div main_~y~0 4294967296) 0))} is VALID [2022-04-08 04:09:13,668 INFO L290 TraceCheckUtils]: 6: Hoare triple {159#(and (= main_~x~0 0) (<= 10000000 main_~y~0) (<= (div main_~y~0 4294967296) 0))} assume !(~x~0 % 4294967296 < ~y~0 % 4294967296); {155#false} is VALID [2022-04-08 04:09:13,668 INFO L272 TraceCheckUtils]: 7: Hoare triple {155#false} call __VERIFIER_assert((if ~z~0 % 4294967296 == ~x~0 % 4294967296 then 1 else 0)); {155#false} is VALID [2022-04-08 04:09:13,668 INFO L290 TraceCheckUtils]: 8: Hoare triple {155#false} ~cond := #in~cond; {155#false} is VALID [2022-04-08 04:09:13,669 INFO L290 TraceCheckUtils]: 9: Hoare triple {155#false} assume 0 == ~cond; {155#false} is VALID [2022-04-08 04:09:13,669 INFO L290 TraceCheckUtils]: 10: Hoare triple {155#false} assume !false; {155#false} is VALID [2022-04-08 04:09:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 04:09:13,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 04:09:13,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405710202] [2022-04-08 04:09:13,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405710202] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:09:13,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:09:13,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-08 04:09:13,670 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 04:09:13,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1958887090] [2022-04-08 04:09:13,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1958887090] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:09:13,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:09:13,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-08 04:09:13,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013040454] [2022-04-08 04:09:13,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 04:09:13,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-08 04:09:13,672 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 04:09:13,672 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,682 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:09:13,682 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-08 04:09:13,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 04:09:13,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-08 04:09:13,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-08 04:09:13,683 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:09:13,823 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-04-08 04:09:13,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-08 04:09:13,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-08 04:09:13,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 04:09:13,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2022-04-08 04:09:13,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2022-04-08 04:09:13,829 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 29 transitions. [2022-04-08 04:09:13,859 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 04:09:13,861 INFO L225 Difference]: With dead ends: 25 [2022-04-08 04:09:13,861 INFO L226 Difference]: Without dead ends: 17 [2022-04-08 04:09:13,863 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-08 04:09:13,866 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 04:09:13,867 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 19 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 04:09:13,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-04-08 04:09:13,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-04-08 04:09:13,881 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 04:09:13,881 INFO L82 GeneralOperation]: Start isEquivalent. First operand 17 states. Second operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,881 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,882 INFO L87 Difference]: Start difference. First operand 17 states. Second operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:09:13,884 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-04-08 04:09:13,884 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-04-08 04:09:13,884 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:09:13,884 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:09:13,885 INFO L74 IsIncluded]: Start isIncluded. First operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 17 states. [2022-04-08 04:09:13,886 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 17 states. [2022-04-08 04:09:13,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:09:13,887 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-04-08 04:09:13,887 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-04-08 04:09:13,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:09:13,888 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:09:13,888 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 04:09:13,888 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 04:09:13,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-04-08 04:09:13,891 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2022-04-08 04:09:13,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 04:09:13,891 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-04-08 04:09:13,891 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:09:13,891 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 16 states and 17 transitions. [2022-04-08 04:09:13,909 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:09:13,910 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-04-08 04:09:13,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-08 04:09:13,910 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 04:09:13,910 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 04:09:13,911 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-08 04:09:13,911 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 04:09:13,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 04:09:13,912 INFO L85 PathProgramCache]: Analyzing trace with hash -79339060, now seen corresponding path program 1 times [2022-04-08 04:09:13,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 04:09:13,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [116714644] [2022-04-08 04:09:17,650 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-08 04:09:18,161 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-08 04:09:18,165 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: free variables [|v_main_#t~post5_4|] at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:324) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.PredicateHelper.normalizeTerm(PredicateHelper.java:201) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:254) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAcceleratedInterpolation.construct(IpTcStrategyModuleAcceleratedInterpolation.java:80) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:595) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:412) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-08 04:09:18,169 INFO L158 Benchmark]: Toolchain (without parser) took 5774.40ms. Allocated memory was 177.2MB in the beginning and 235.9MB in the end (delta: 58.7MB). Free memory was 126.1MB in the beginning and 158.9MB in the end (delta: -32.8MB). Peak memory consumption was 25.5MB. Max. memory is 8.0GB. [2022-04-08 04:09:18,169 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 177.2MB. Free memory was 142.3MB in the beginning and 142.2MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 04:09:18,169 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.76ms. Allocated memory is still 177.2MB. Free memory was 126.0MB in the beginning and 153.4MB in the end (delta: -27.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-08 04:09:18,170 INFO L158 Benchmark]: Boogie Preprocessor took 36.88ms. Allocated memory is still 177.2MB. Free memory was 153.4MB in the beginning and 151.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-08 04:09:18,170 INFO L158 Benchmark]: RCFGBuilder took 286.66ms. Allocated memory is still 177.2MB. Free memory was 151.9MB in the beginning and 141.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-08 04:09:18,171 INFO L158 Benchmark]: TraceAbstraction took 5246.42ms. Allocated memory was 177.2MB in the beginning and 235.9MB in the end (delta: 58.7MB). Free memory was 140.9MB in the beginning and 158.9MB in the end (delta: -18.0MB). Peak memory consumption was 40.4MB. Max. memory is 8.0GB. [2022-04-08 04:09:18,172 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 0.11ms. Allocated memory is still 177.2MB. Free memory was 142.3MB in the beginning and 142.2MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 195.76ms. Allocated memory is still 177.2MB. Free memory was 126.0MB in the beginning and 153.4MB in the end (delta: -27.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.88ms. Allocated memory is still 177.2MB. Free memory was 153.4MB in the beginning and 151.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 286.66ms. Allocated memory is still 177.2MB. Free memory was 151.9MB in the beginning and 141.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 5246.42ms. Allocated memory was 177.2MB in the beginning and 235.9MB in the end (delta: 58.7MB). Free memory was 140.9MB in the beginning and 158.9MB in the end (delta: -18.0MB). Peak memory consumption was 40.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: free variables [|v_main_#t~post5_4|] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: free variables [|v_main_#t~post5_4|]: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-04-08 04:09:18,188 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...