/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/psyco/psyco_accelerometer_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:52:24,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:52:24,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:52:24,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 01:52:24,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:52:24,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:52:24,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:52:24,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:52:24,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:52:24,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:52:24,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:52:24,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:52:24,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:52:24,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:52:24,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:52:24,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:52:24,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:52:24,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:52:24,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:52:24,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:52:24,502 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 01:52:24,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:52:24,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:52:24,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:52:24,534 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:52:24,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:52:24,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:52:24,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:52:24,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:52:24,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:52:24,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:52:24,537 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:52:24,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:52:24,537 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:52:24,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:52:24,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:52:24,538 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:52:24,538 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:52:24,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:52:24,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:52:24,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:52:24,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:52:24,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:52:24,539 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:52:24,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:52:25,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:52:25,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:52:25,022 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:52:25,023 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:52:25,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_accelerometer_1.c [2020-11-07 01:52:25,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10aa01af9/5bfe4a8508ad443a8b67159ed0cf1b39/FLAG0806dc706 [2020-11-07 01:52:26,145 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:52:26,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_accelerometer_1.c [2020-11-07 01:52:26,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10aa01af9/5bfe4a8508ad443a8b67159ed0cf1b39/FLAG0806dc706 [2020-11-07 01:52:26,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10aa01af9/5bfe4a8508ad443a8b67159ed0cf1b39 [2020-11-07 01:52:26,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:52:26,672 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:52:26,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:52:26,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:52:26,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:52:26,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:52:26" (1/1) ... [2020-11-07 01:52:26,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176c1b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:26, skipping insertion in model container [2020-11-07 01:52:26,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:52:26" (1/1) ... [2020-11-07 01:52:26,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:52:26,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:52:27,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:52:27,596 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:52:28,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:52:28,064 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:52:28,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:28 WrapperNode [2020-11-07 01:52:28,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:52:28,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:52:28,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:52:28,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:52:28,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:28" (1/1) ... [2020-11-07 01:52:28,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:28" (1/1) ... [2020-11-07 01:52:28,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:28" (1/1) ... [2020-11-07 01:52:28,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:28" (1/1) ... [2020-11-07 01:52:28,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:28" (1/1) ... [2020-11-07 01:52:28,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:28" (1/1) ... [2020-11-07 01:52:28,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:28" (1/1) ... [2020-11-07 01:52:28,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:52:28,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:52:28,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:52:28,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:52:28,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:28" (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 01:52:28,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:52:28,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:52:28,507 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:52:28,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:52:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:52:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:52:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:52:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:52:28,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:52:28,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:52:28,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:52:28,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:52:28,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:52:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:52:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:52:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:52:31,372 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:52:31,372 INFO L298 CfgBuilder]: Removed 21 assume(true) statements. [2020-11-07 01:52:31,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:52:31 BoogieIcfgContainer [2020-11-07 01:52:31,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:52:31,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:52:31,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:52:31,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:52:31,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:52:26" (1/3) ... [2020-11-07 01:52:31,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7115f607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:52:31, skipping insertion in model container [2020-11-07 01:52:31,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:28" (2/3) ... [2020-11-07 01:52:31,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7115f607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:52:31, skipping insertion in model container [2020-11-07 01:52:31,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:52:31" (3/3) ... [2020-11-07 01:52:31,388 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_accelerometer_1.c [2020-11-07 01:52:31,407 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:52:31,412 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:52:31,427 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:52:31,458 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:52:31,459 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:52:31,459 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:52:31,459 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:52:31,459 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:52:31,460 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:52:31,460 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:52:31,460 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:52:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states. [2020-11-07 01:52:31,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-07 01:52:31,511 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:52:31,512 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, 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, 1, 1, 1] [2020-11-07 01:52:31,513 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:52:31,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:52:31,520 INFO L82 PathProgramCache]: Analyzing trace with hash -732516323, now seen corresponding path program 1 times [2020-11-07 01:52:31,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:52:31,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666017776] [2020-11-07 01:52:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:52:31,620 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:52:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:31,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:52:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:31,969 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 01:52:31,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666017776] [2020-11-07 01:52:31,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:52:31,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:52:31,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545680199] [2020-11-07 01:52:31,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:52:31,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:52:31,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:52:32,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:52:32,002 INFO L87 Difference]: Start difference. First operand 1159 states. Second operand 3 states. [2020-11-07 01:52:32,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:52:32,501 INFO L93 Difference]: Finished difference Result 2185 states and 2633 transitions. [2020-11-07 01:52:32,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:52:32,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-11-07 01:52:32,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:52:32,548 INFO L225 Difference]: With dead ends: 2185 [2020-11-07 01:52:32,548 INFO L226 Difference]: Without dead ends: 1043 [2020-11-07 01:52:32,561 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 01:52:32,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-11-07 01:52:32,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2020-11-07 01:52:32,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-11-07 01:52:32,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1212 transitions. [2020-11-07 01:52:32,890 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1212 transitions. Word has length 59 [2020-11-07 01:52:32,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:52:32,891 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1212 transitions. [2020-11-07 01:52:32,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:52:32,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1212 transitions. [2020-11-07 01:52:32,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-07 01:52:32,897 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:52:32,897 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, 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, 1, 1, 1, 1] [2020-11-07 01:52:32,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:52:32,898 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:52:32,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:52:32,900 INFO L82 PathProgramCache]: Analyzing trace with hash 2111276910, now seen corresponding path program 1 times [2020-11-07 01:52:32,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:52:32,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984676468] [2020-11-07 01:52:32,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:52:32,918 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:52:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:33,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:52:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:33,116 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 01:52:33,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984676468] [2020-11-07 01:52:33,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:52:33,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 01:52:33,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381571444] [2020-11-07 01:52:33,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 01:52:33,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:52:33,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 01:52:33,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 01:52:33,120 INFO L87 Difference]: Start difference. First operand 1043 states and 1212 transitions. Second operand 4 states. [2020-11-07 01:52:36,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:52:36,938 INFO L93 Difference]: Finished difference Result 2076 states and 2415 transitions. [2020-11-07 01:52:36,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 01:52:36,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-11-07 01:52:36,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:52:36,950 INFO L225 Difference]: With dead ends: 2076 [2020-11-07 01:52:36,950 INFO L226 Difference]: Without dead ends: 1064 [2020-11-07 01:52:36,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 01:52:36,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2020-11-07 01:52:37,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1064. [2020-11-07 01:52:37,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-11-07 01:52:37,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1233 transitions. [2020-11-07 01:52:37,158 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1233 transitions. Word has length 60 [2020-11-07 01:52:37,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:52:37,159 INFO L481 AbstractCegarLoop]: Abstraction has 1064 states and 1233 transitions. [2020-11-07 01:52:37,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 01:52:37,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1233 transitions. [2020-11-07 01:52:37,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-07 01:52:37,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:52:37,170 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:52:37,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:52:37,171 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:52:37,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:52:37,172 INFO L82 PathProgramCache]: Analyzing trace with hash 867639045, now seen corresponding path program 1 times [2020-11-07 01:52:37,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:52:37,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58685342] [2020-11-07 01:52:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:52:37,339 WARN L194 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-11-07 01:52:37,521 WARN L194 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 01:52:42,310 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:52:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:43,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:52:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:43,539 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 01:52:44,492 WARN L194 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 1473 DAG size of output: 61 [2020-11-07 01:52:44,791 WARN L194 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-07 01:52:44,920 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-07 01:52:45,072 WARN L194 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-07 01:52:45,211 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-07 01:52:45,359 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-07 01:52:45,505 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-07 01:52:45,661 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-07 01:52:45,810 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-11-07 01:52:45,963 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-07 01:52:46,122 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-11-07 01:52:46,398 WARN L194 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-11-07 01:52:46,576 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-11-07 01:52:46,758 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-07 01:52:47,056 WARN L194 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-11-07 01:52:47,314 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-07 01:52:47,495 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 01:52:47,811 WARN L194 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-11-07 01:52:48,005 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 01:52:50,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58685342] [2020-11-07 01:52:50,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:52:50,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2020-11-07 01:52:50,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146186639] [2020-11-07 01:52:50,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-11-07 01:52:50,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:52:50,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-11-07 01:52:50,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1339, Unknown=0, NotChecked=0, Total=1560 [2020-11-07 01:52:50,992 INFO L87 Difference]: Start difference. First operand 1064 states and 1233 transitions. Second operand 40 states. [2020-11-07 01:52:51,601 WARN L194 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 67 [2020-11-07 01:52:51,843 WARN L194 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 69 [2020-11-07 01:52:52,048 WARN L194 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 67 [2020-11-07 01:52:52,277 WARN L194 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 71 [2020-11-07 01:52:52,534 WARN L194 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 73 [2020-11-07 01:52:52,751 WARN L194 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 71 [2020-11-07 01:52:53,015 WARN L194 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 75 [2020-11-07 01:52:53,322 WARN L194 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 77 [2020-11-07 01:52:53,594 WARN L194 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 75 [2020-11-07 01:52:53,878 WARN L194 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 79 [2020-11-07 01:52:54,263 WARN L194 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 84 [2020-11-07 01:52:54,654 WARN L194 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 86 [2020-11-07 01:52:55,056 WARN L194 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 90 [2020-11-07 01:52:55,493 WARN L194 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 94 [2020-11-07 01:52:55,977 WARN L194 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 96 [2020-11-07 01:52:56,465 WARN L194 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 100 [2020-11-07 01:52:56,944 WARN L194 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 104 [2020-11-07 01:52:57,171 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-11-07 01:52:57,434 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-11-07 01:52:57,645 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-11-07 01:52:57,943 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-11-07 01:52:58,377 WARN L194 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 110 [2020-11-07 01:52:58,576 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-11-07 01:52:58,988 WARN L194 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 108 [2020-11-07 01:52:59,193 WARN L194 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-11-07 01:52:59,442 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-11-07 01:52:59,826 WARN L194 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 110 [2020-11-07 01:53:00,057 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-11-07 01:53:00,458 WARN L194 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 108 [2020-11-07 01:53:00,710 WARN L194 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-11-07 01:53:01,020 WARN L194 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-11-07 01:53:01,416 WARN L194 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 110 [2020-11-07 01:53:01,676 WARN L194 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-11-07 01:53:02,078 WARN L194 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 108 [2020-11-07 01:53:02,337 WARN L194 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-11-07 01:53:02,647 WARN L194 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-11-07 01:53:03,023 WARN L194 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 110 [2020-11-07 01:53:03,551 WARN L194 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 104 [2020-11-07 01:53:04,068 WARN L194 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 110 [2020-11-07 01:53:04,542 WARN L194 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 104 [2020-11-07 01:53:04,950 WARN L194 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 110 [2020-11-07 01:53:16,996 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-11-07 01:53:18,660 WARN L194 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 70 [2020-11-07 01:53:19,249 WARN L194 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 72 [2020-11-07 01:53:19,821 WARN L194 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 70 [2020-11-07 01:53:20,409 WARN L194 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 74 [2020-11-07 01:53:21,038 WARN L194 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 76 [2020-11-07 01:53:21,600 WARN L194 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 74 [2020-11-07 01:53:22,181 WARN L194 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 78 [2020-11-07 01:53:22,782 WARN L194 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 80 [2020-11-07 01:53:23,330 WARN L194 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 78 [2020-11-07 01:53:23,938 WARN L194 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 82 [2020-11-07 01:53:24,734 WARN L194 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 87 [2020-11-07 01:53:25,481 WARN L194 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 89 [2020-11-07 01:53:26,268 WARN L194 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 93 [2020-11-07 01:53:27,050 WARN L194 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 97 [2020-11-07 01:53:27,852 WARN L194 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 99 [2020-11-07 01:53:28,658 WARN L194 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 103 [2020-11-07 01:53:29,455 WARN L194 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 107 [2020-11-07 01:53:30,119 WARN L194 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109 [2020-11-07 01:53:31,193 WARN L194 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 113 [2020-11-07 01:53:31,936 WARN L194 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 115 [2020-11-07 01:53:33,453 WARN L194 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 113 [2020-11-07 01:53:34,211 WARN L194 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 111 [2020-11-07 01:53:35,286 WARN L194 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 113 [2020-11-07 01:53:36,025 WARN L194 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 111 [2020-11-07 01:53:37,193 WARN L194 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 113 [2020-11-07 01:53:37,981 WARN L194 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 111 [2020-11-07 01:53:39,045 WARN L194 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 113 [2020-11-07 01:53:39,880 WARN L194 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 107 [2020-11-07 01:53:40,778 WARN L194 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 113 [2020-11-07 01:53:41,567 WARN L194 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 107 [2020-11-07 01:53:42,413 WARN L194 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 113 [2020-11-07 01:53:57,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:53:57,444 INFO L93 Difference]: Finished difference Result 2563 states and 3017 transitions. [2020-11-07 01:53:57,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-11-07 01:53:57,446 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 94 [2020-11-07 01:53:57,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:53:57,460 INFO L225 Difference]: With dead ends: 2563 [2020-11-07 01:53:57,460 INFO L226 Difference]: Without dead ends: 1524 [2020-11-07 01:53:57,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4160 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=1873, Invalid=11699, Unknown=0, NotChecked=0, Total=13572 [2020-11-07 01:53:57,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2020-11-07 01:53:57,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1031. [2020-11-07 01:53:57,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-11-07 01:53:57,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1193 transitions. [2020-11-07 01:53:57,672 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1193 transitions. Word has length 94 [2020-11-07 01:53:57,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:53:57,673 INFO L481 AbstractCegarLoop]: Abstraction has 1031 states and 1193 transitions. [2020-11-07 01:53:57,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-11-07 01:53:57,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1193 transitions. [2020-11-07 01:53:57,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-07 01:53:57,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:53:57,675 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:53:57,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:53:57,676 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:53:57,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:53:57,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1662535846, now seen corresponding path program 1 times [2020-11-07 01:53:57,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:53:57,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675176334] [2020-11-07 01:53:57,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:53:57,885 WARN L194 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-11-07 01:53:58,132 WARN L194 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 01:54:02,179 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:54:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:54:03,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:54:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:54:03,126 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 01:54:04,273 WARN L194 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 1425 DAG size of output: 124 [2020-11-07 01:54:04,451 WARN L194 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-11-07 01:54:04,632 WARN L194 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-11-07 01:54:04,804 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-11-07 01:54:05,005 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-11-07 01:54:05,214 WARN L194 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-11-07 01:54:05,433 WARN L194 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-07 01:54:05,682 WARN L194 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-11-07 01:54:05,935 WARN L194 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-11-07 01:54:06,221 WARN L194 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-11-07 01:54:06,512 WARN L194 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-11-07 01:54:06,806 WARN L194 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-11-07 01:54:10,610 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-11-07 01:54:12,219 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-11-07 01:54:12,629 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-11-07 01:54:13,048 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-11-07 01:54:14,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675176334] [2020-11-07 01:54:14,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:54:14,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2020-11-07 01:54:14,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254714655] [2020-11-07 01:54:14,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-07 01:54:14,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:54:14,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-07 01:54:14,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1657, Unknown=0, NotChecked=0, Total=1892 [2020-11-07 01:54:14,193 INFO L87 Difference]: Start difference. First operand 1031 states and 1193 transitions. Second operand 44 states. [2020-11-07 01:54:15,222 WARN L194 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 67 [2020-11-07 01:54:15,568 WARN L194 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 69 [2020-11-07 01:54:15,871 WARN L194 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 67 [2020-11-07 01:54:16,194 WARN L194 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 71 [2020-11-07 01:54:16,535 WARN L194 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 73 [2020-11-07 01:54:16,902 WARN L194 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 71 [2020-11-07 01:54:17,271 WARN L194 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 75 [2020-11-07 01:54:17,653 WARN L194 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 77 [2020-11-07 01:54:18,018 WARN L194 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 75 [2020-11-07 01:54:18,419 WARN L194 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 79 [2020-11-07 01:54:18,899 WARN L194 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 84 [2020-11-07 01:54:19,419 WARN L194 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 200 [2020-11-07 01:54:19,907 WARN L194 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 203 [2020-11-07 01:54:20,519 WARN L194 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 206 [2020-11-07 01:54:21,088 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 207 [2020-11-07 01:54:21,655 WARN L194 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 210 [2020-11-07 01:54:22,381 WARN L194 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 213 [2020-11-07 01:54:22,755 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-11-07 01:54:23,191 WARN L194 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-11-07 01:54:23,547 WARN L194 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-11-07 01:54:24,277 WARN L194 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-11-07 01:54:24,949 WARN L194 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 218 [2020-11-07 01:54:25,271 WARN L194 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-11-07 01:54:25,927 WARN L194 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 216 [2020-11-07 01:54:26,248 WARN L194 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-11-07 01:54:26,614 WARN L194 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-11-07 01:54:27,175 WARN L194 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 218 [2020-11-07 01:54:27,580 WARN L194 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-11-07 01:54:28,196 WARN L194 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 216 [2020-11-07 01:54:28,611 WARN L194 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-11-07 01:54:29,085 WARN L194 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-11-07 01:54:29,668 WARN L194 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 218 [2020-11-07 01:54:30,112 WARN L194 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-11-07 01:54:30,718 WARN L194 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 216 [2020-11-07 01:54:31,143 WARN L194 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-11-07 01:54:31,693 WARN L194 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-11-07 01:54:32,252 WARN L194 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 218 [2020-11-07 01:54:32,978 WARN L194 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 221 [2020-11-07 01:54:33,769 WARN L194 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 218 [2020-11-07 01:54:34,410 WARN L194 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 221 [2020-11-07 01:54:35,075 WARN L194 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 218 [2020-11-07 01:55:27,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:55:27,449 INFO L93 Difference]: Finished difference Result 2092 states and 2421 transitions. [2020-11-07 01:55:27,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-07 01:55:27,450 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 102 [2020-11-07 01:55:27,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:55:27,458 INFO L225 Difference]: With dead ends: 2092 [2020-11-07 01:55:27,458 INFO L226 Difference]: Without dead ends: 1093 [2020-11-07 01:55:27,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 61 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2265 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=988, Invalid=6494, Unknown=0, NotChecked=0, Total=7482 [2020-11-07 01:55:27,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2020-11-07 01:55:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1056. [2020-11-07 01:55:27,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2020-11-07 01:55:27,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1220 transitions. [2020-11-07 01:55:27,696 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1220 transitions. Word has length 102 [2020-11-07 01:55:27,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:55:27,697 INFO L481 AbstractCegarLoop]: Abstraction has 1056 states and 1220 transitions. [2020-11-07 01:55:27,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-07 01:55:27,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1220 transitions. [2020-11-07 01:55:27,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-07 01:55:27,698 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:55:27,698 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:55:27,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 01:55:27,699 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:55:27,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:55:27,699 INFO L82 PathProgramCache]: Analyzing trace with hash -394811530, now seen corresponding path program 1 times [2020-11-07 01:55:27,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:55:27,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129783020] [2020-11-07 01:55:27,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:55:27,986 WARN L194 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-11-07 01:55:28,369 WARN L194 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 01:55:32,574 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:55:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:55:33,332 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:55:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:55:33,966 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:55:34,106 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 01:55:34,106 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:55:34,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 01:55:34,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:55:34 BoogieIcfgContainer [2020-11-07 01:55:34,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:55:34,133 INFO L168 Benchmark]: Toolchain (without parser) took 187465.65 ms. Allocated memory was 151.0 MB in the beginning and 635.4 MB in the end (delta: 484.4 MB). Free memory was 117.9 MB in the beginning and 308.1 MB in the end (delta: -190.3 MB). Peak memory consumption was 294.6 MB. Max. memory is 8.0 GB. [2020-11-07 01:55:34,133 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:55:34,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1391.75 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 117.2 MB in the beginning and 156.4 MB in the end (delta: -39.2 MB). Peak memory consumption was 83.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:55:34,135 INFO L168 Benchmark]: Boogie Preprocessor took 338.39 ms. Allocated memory is still 191.9 MB. Free memory was 156.4 MB in the beginning and 147.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:55:34,136 INFO L168 Benchmark]: RCFGBuilder took 2969.56 ms. Allocated memory was 191.9 MB in the beginning and 287.3 MB in the end (delta: 95.4 MB). Free memory was 147.3 MB in the beginning and 152.6 MB in the end (delta: -5.3 MB). Peak memory consumption was 94.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:55:34,136 INFO L168 Benchmark]: TraceAbstraction took 182752.23 ms. Allocated memory was 287.3 MB in the beginning and 635.4 MB in the end (delta: 348.1 MB). Free memory was 152.1 MB in the beginning and 308.1 MB in the end (delta: -156.1 MB). Peak memory consumption was 191.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:55:34,139 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1391.75 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 117.2 MB in the beginning and 156.4 MB in the end (delta: -39.2 MB). Peak memory consumption was 83.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 338.39 ms. Allocated memory is still 191.9 MB. Free memory was 156.4 MB in the beginning and 147.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2969.56 ms. Allocated memory was 191.9 MB in the beginning and 287.3 MB in the end (delta: 95.4 MB). Free memory was 147.3 MB in the beginning and 152.6 MB in the end (delta: -5.3 MB). Peak memory consumption was 94.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 182752.23 ms. Allocated memory was 287.3 MB in the beginning and 635.4 MB in the end (delta: 348.1 MB). Free memory was 152.1 MB in the beginning and 308.1 MB in the end (delta: -156.1 MB). Peak memory consumption was 191.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L7] int m_init = 1; [L8] int m_disconnect = 2; [L9] int m_getValueX = 3; [L10] int m_getValueY = 4; [L11] int m_Accelerometer = 5; [L12] int m_update = 6; [L13] int m_dataReceived = 7; [L14] int m_connect_1 = 8; [L15] int m_connect_2 = 9; [L20] int q = 0; [L21] int method_id; [L24] int this_m_conn = 0; [L25] int this_m_sensitivity = 100; [L26] int this_m_samples = 200; [L27] int this_m_delta = 1; [L28] int this_m_accX = 0; [L29] int this_m_sensorInfo = 0; [L30] int this_m_conn_data_listener = 0; [L31] int this_m_accY = 0; [L34] COND TRUE 1 [L37] int P1=__VERIFIER_nondet_int(); [L38] int P2=__VERIFIER_nondet_int(); [L39] int P3=__VERIFIER_nondet_int(); [L40] _Bool P4=__VERIFIER_nondet_int(); [L41] _Bool P5=__VERIFIER_nondet_int(); [L42] _Bool P6=__VERIFIER_nondet_int(); [L46] COND TRUE q == 0 [L47] COND TRUE __VERIFIER_nondet_int() [L51] method_id = 5 [L53] COND FALSE !(0) [L57] q = 2 [L59] this_m_conn=0 [L59] this_m_samples=200 [L59] this_m_sensitivity=100 [L59] this_m_accX=0 [L59] this_m_accY=0 [L59] this_m_delta=1 [L59] this_m_sensorInfo=0 [L59] this_m_conn_data_listener=0 [L34] COND TRUE 1 [L37] int P1=__VERIFIER_nondet_int(); [L38] int P2=__VERIFIER_nondet_int(); [L39] int P3=__VERIFIER_nondet_int(); [L40] _Bool P4=__VERIFIER_nondet_int(); [L41] _Bool P5=__VERIFIER_nondet_int(); [L42] _Bool P6=__VERIFIER_nondet_int(); [L46] COND FALSE !(q == 0) [L66] COND FALSE !(q == 1) [L150] COND TRUE q == 2 [L151] COND FALSE !(__VERIFIER_nondet_int()) [L167] COND FALSE !(__VERIFIER_nondet_int()) [L183] COND FALSE !(__VERIFIER_nondet_int()) [L199] COND TRUE __VERIFIER_nondet_int() [L203] method_id = 3 [L205] COND TRUE (this_m_delta == 0) [L1256] CALL reach_error() [L4] __assert_fail("0", "psyco_accelerometer_1.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 1159 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 182.6s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 144.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5341 SDtfs, 7005 SDslu, 409 SDs, 0 SdLazy, 38557 SolverSat, 193 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 337 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6425 ImplicationChecksByTransitivity, 57.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1159occurred 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: 0.9s AutomataMinimizationTime, 4 MinimizatonAttempts, 530 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...