/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/multivar_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:35:48,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:35:48,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:35:48,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 06:35:48,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 06:35:48,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 06:35:48,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 06:35:48,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 06:35:48,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 06:35:48,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 06:35:48,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 06:35:48,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 06:35:48,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:35:48,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:35:48,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:35:48,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:35:48,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:35:48,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:35:48,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:35:48,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:35:48,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:35:48,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:35:48,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:35:48,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:35:48,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:35:48,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:35:48,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:35:48,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:35:48,585 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 06:35:48,610 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:35:48,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:35:48,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:35:48,612 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:35:48,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:35:48,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:35:48,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:35:48,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:35:48,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:35:48,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:35:48,614 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:35:48,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:35:48,614 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:35:48,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:35:48,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:35:48,615 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:35:48,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:35:48,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:35:48,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:35:48,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:35:48,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:35:48,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:35:48,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:35:49,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:35:49,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:35:49,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:35:49,066 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:35:49,067 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:35:49,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_1-1.c [2020-11-07 06:35:49,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7715531c7/9b3f3c2b47ef41978d5414cbd3b47083/FLAG14c7e1a82 [2020-11-07 06:35:49,740 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:35:49,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/multivar_1-1.c [2020-11-07 06:35:49,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7715531c7/9b3f3c2b47ef41978d5414cbd3b47083/FLAG14c7e1a82 [2020-11-07 06:35:50,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7715531c7/9b3f3c2b47ef41978d5414cbd3b47083 [2020-11-07 06:35:50,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:35:50,085 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:35:50,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:35:50,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:35:50,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:35:50,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:35:50" (1/1) ... [2020-11-07 06:35:50,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43682662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:50, skipping insertion in model container [2020-11-07 06:35:50,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:35:50" (1/1) ... [2020-11-07 06:35:50,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:35:50,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:35:50,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:35:50,309 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:35:50,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:35:50,345 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:35:50,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:50 WrapperNode [2020-11-07 06:35:50,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:35:50,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:35:50,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:35:50,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:35:50,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:50" (1/1) ... [2020-11-07 06:35:50,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:50" (1/1) ... [2020-11-07 06:35:50,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:50" (1/1) ... [2020-11-07 06:35:50,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:50" (1/1) ... [2020-11-07 06:35:50,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:50" (1/1) ... [2020-11-07 06:35:50,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:50" (1/1) ... [2020-11-07 06:35:50,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:50" (1/1) ... [2020-11-07 06:35:50,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:35:50,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:35:50,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:35:50,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:35:50,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:35:50,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:35:50,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:35:50,546 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:35:50,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 06:35:50,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:35:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:35:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:35:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:35:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:35:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-07 06:35:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:35:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:35:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:35:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:35:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:35:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:35:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:35:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:35:50,817 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:35:50,818 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 06:35:50,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:35:50 BoogieIcfgContainer [2020-11-07 06:35:50,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:35:50,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:35:50,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:35:50,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:35:50,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:35:50" (1/3) ... [2020-11-07 06:35:50,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a9157b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:35:50, skipping insertion in model container [2020-11-07 06:35:50,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:50" (2/3) ... [2020-11-07 06:35:50,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a9157b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:35:50, skipping insertion in model container [2020-11-07 06:35:50,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:35:50" (3/3) ... [2020-11-07 06:35:50,830 INFO L111 eAbstractionObserver]: Analyzing ICFG multivar_1-1.c [2020-11-07 06:35:50,848 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:35:50,853 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:35:50,871 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:35:50,918 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:35:50,919 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:35:50,919 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:35:50,922 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:35:50,922 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:35:50,923 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:35:50,923 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:35:50,923 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:35:50,953 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-11-07 06:35:50,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-07 06:35:50,964 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:50,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:35:50,966 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:50,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:50,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1824432034, now seen corresponding path program 1 times [2020-11-07 06:35:50,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:50,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051186628] [2020-11-07 06:35:50,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:51,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:35:51,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051186628] [2020-11-07 06:35:51,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:35:51,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 06:35:51,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906737117] [2020-11-07 06:35:51,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 06:35:51,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:51,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 06:35:51,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 06:35:51,307 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-11-07 06:35:51,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:51,427 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-11-07 06:35:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 06:35:51,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-07 06:35:51,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:51,440 INFO L225 Difference]: With dead ends: 49 [2020-11-07 06:35:51,440 INFO L226 Difference]: Without dead ends: 28 [2020-11-07 06:35:51,444 INFO L677 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 [2020-11-07 06:35:51,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-07 06:35:51,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-07 06:35:51,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-07 06:35:51,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-11-07 06:35:51,499 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 21 [2020-11-07 06:35:51,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:51,499 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-11-07 06:35:51,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 06:35:51,500 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-11-07 06:35:51,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-07 06:35:51,501 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:51,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:35:51,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:35:51,504 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:51,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:51,505 INFO L82 PathProgramCache]: Analyzing trace with hash -2110723544, now seen corresponding path program 1 times [2020-11-07 06:35:51,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:51,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360477033] [2020-11-07 06:35:51,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:51,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:35:51,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360477033] [2020-11-07 06:35:51,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:35:51,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 06:35:51,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104259824] [2020-11-07 06:35:51,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 06:35:51,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:51,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 06:35:51,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 06:35:51,780 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 6 states. [2020-11-07 06:35:52,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:52,132 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-11-07 06:35:52,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 06:35:52,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-07 06:35:52,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:52,135 INFO L225 Difference]: With dead ends: 37 [2020-11-07 06:35:52,135 INFO L226 Difference]: Without dead ends: 31 [2020-11-07 06:35:52,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-07 06:35:52,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-07 06:35:52,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-11-07 06:35:52,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-07 06:35:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-07 06:35:52,149 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 21 [2020-11-07 06:35:52,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:52,150 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-07 06:35:52,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 06:35:52,150 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-07 06:35:52,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-07 06:35:52,151 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:52,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:35:52,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:35:52,152 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:52,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:52,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1542746123, now seen corresponding path program 1 times [2020-11-07 06:35:52,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:52,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855965224] [2020-11-07 06:35:52,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:52,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:35:52,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855965224] [2020-11-07 06:35:52,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:35:52,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-07 06:35:52,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779923437] [2020-11-07 06:35:52,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 06:35:52,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:52,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 06:35:52,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-11-07 06:35:52,853 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 12 states. [2020-11-07 06:35:53,227 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-11-07 06:35:53,400 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-11-07 06:35:53,859 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-11-07 06:35:54,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:54,166 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-11-07 06:35:54,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-07 06:35:54,167 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-11-07 06:35:54,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:54,169 INFO L225 Difference]: With dead ends: 44 [2020-11-07 06:35:54,169 INFO L226 Difference]: Without dead ends: 38 [2020-11-07 06:35:54,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2020-11-07 06:35:54,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-07 06:35:54,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-11-07 06:35:54,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-07 06:35:54,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-11-07 06:35:54,202 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 28 [2020-11-07 06:35:54,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:54,204 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-11-07 06:35:54,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 06:35:54,204 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-11-07 06:35:54,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-07 06:35:54,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:54,207 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:35:54,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:35:54,208 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:54,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:54,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1446243128, now seen corresponding path program 2 times [2020-11-07 06:35:54,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:54,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393222809] [2020-11-07 06:35:54,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:54,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:54,517 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-07 06:35:54,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393222809] [2020-11-07 06:35:54,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:35:54,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 06:35:54,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278630861] [2020-11-07 06:35:54,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 06:35:54,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:54,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 06:35:54,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-07 06:35:54,521 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 9 states. [2020-11-07 06:35:54,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:54,902 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-11-07 06:35:54,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 06:35:54,903 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-11-07 06:35:54,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:54,904 INFO L225 Difference]: With dead ends: 36 [2020-11-07 06:35:54,904 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 06:35:54,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-11-07 06:35:54,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 06:35:54,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 06:35:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 06:35:54,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 06:35:54,906 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-11-07 06:35:54,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:54,906 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 06:35:54,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 06:35:54,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 06:35:54,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 06:35:54,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 06:35:54,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 06:35:55,437 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 06:35:55,438 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 06:35:55,438 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 06:35:55,438 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 06:35:55,438 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 06:35:55,438 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 06:35:55,438 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:35:55,439 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 06:35:55,439 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 06:35:55,439 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-11-07 06:35:55,439 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-07 06:35:55,439 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 06:35:55,439 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 06:35:55,440 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:35:55,440 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:35:55,440 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:35:55,440 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 06:35:55,440 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 06:35:55,440 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 13 23) the Hoare annotation is: true [2020-11-07 06:35:55,440 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 13 23) the Hoare annotation is: true [2020-11-07 06:35:55,441 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 1))) (and (<= .cse0 main_~x~0) (<= main_~x~0 .cse0))) [2020-11-07 06:35:55,441 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (= main_~y~0 main_~x~0) [2020-11-07 06:35:55,441 INFO L262 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 1)) (.cse1 (+ |main_#t~post9| 1))) (and (<= .cse0 main_~x~0) (<= main_~x~0 .cse0) (<= main_~x~0 .cse1) (<= .cse1 main_~x~0))) [2020-11-07 06:35:55,441 INFO L262 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (and (<= main_~y~0 |main_#t~post8|) (= main_~y~0 main_~x~0) (<= |main_#t~post8| main_~y~0)) [2020-11-07 06:35:55,442 INFO L262 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: (let ((.cse0 (+ |main_#t~post9| 1))) (and (= main_~y~0 main_~x~0) (<= main_~x~0 .cse0) (<= .cse0 main_~x~0))) [2020-11-07 06:35:55,442 INFO L262 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 1))) (and (<= main_~y~0 |main_#t~post8|) (<= .cse0 main_~x~0) (<= main_~x~0 .cse0) (<= |main_#t~post8| main_~y~0))) [2020-11-07 06:35:55,442 INFO L269 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-11-07 06:35:55,442 INFO L262 CegarLoopResult]: At program point L17-2(lines 17 20) the Hoare annotation is: (= main_~y~0 main_~x~0) [2020-11-07 06:35:55,442 INFO L269 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-11-07 06:35:55,442 INFO L262 CegarLoopResult]: At program point L17-3(lines 17 20) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 (* 4294967296 (div main_~x~0 4294967296)))) (.cse0 (+ main_~x~0 (* 4294967296 (div main_~y~0 4294967296))))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-11-07 06:35:55,443 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 13 23) the Hoare annotation is: true [2020-11-07 06:35:55,443 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-11-07 06:35:55,443 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: true [2020-11-07 06:35:55,443 INFO L262 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:35:55,443 INFO L262 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 06:35:55,443 INFO L262 CegarLoopResult]: At program point L8-1(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:35:55,444 INFO L269 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-11-07 06:35:55,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:35:55 BoogieIcfgContainer [2020-11-07 06:35:55,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 06:35:55,466 INFO L168 Benchmark]: Toolchain (without parser) took 5385.09 ms. Allocated memory was 168.8 MB in the beginning and 203.4 MB in the end (delta: 34.6 MB). Free memory was 152.0 MB in the beginning and 143.1 MB in the end (delta: 8.9 MB). Peak memory consumption was 114.8 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:55,467 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 168.8 MB. Free memory is still 142.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:35:55,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.40 ms. Allocated memory is still 168.8 MB. Free memory was 151.3 MB in the beginning and 141.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:55,469 INFO L168 Benchmark]: Boogie Preprocessor took 85.07 ms. Allocated memory is still 168.8 MB. Free memory was 141.8 MB in the beginning and 153.0 MB in the end (delta: -11.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:55,470 INFO L168 Benchmark]: RCFGBuilder took 387.66 ms. Allocated memory is still 168.8 MB. Free memory was 152.7 MB in the beginning and 139.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:55,471 INFO L168 Benchmark]: TraceAbstraction took 4642.25 ms. Allocated memory was 168.8 MB in the beginning and 203.4 MB in the end (delta: 34.6 MB). Free memory was 139.6 MB in the beginning and 143.1 MB in the end (delta: -3.5 MB). Peak memory consumption was 102.9 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:55,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 168.8 MB. Free memory is still 142.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 256.40 ms. Allocated memory is still 168.8 MB. Free memory was 151.3 MB in the beginning and 141.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.07 ms. Allocated memory is still 168.8 MB. Free memory was 141.8 MB in the beginning and 153.0 MB in the end (delta: -11.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 387.66 ms. Allocated memory is still 168.8 MB. Free memory was 152.7 MB in the beginning and 139.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4642.25 ms. Allocated memory was 168.8 MB in the beginning and 203.4 MB in the end (delta: 34.6 MB). Free memory was 139.6 MB in the beginning and 143.1 MB in the end (delta: -3.5 MB). Peak memory consumption was 102.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: y == x - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 96 SDtfs, 84 SDslu, 228 SDs, 0 SdLazy, 249 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 37 LocationsWithAnnotation, 67 PreInvPairs, 88 NumberOfFragments, 180 HoareAnnotationTreeSize, 67 FomulaSimplifications, 1207 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 37 FomulaSimplificationsInter, 602 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 15402 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 9/10 InterpolantCoveringCapability, 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...