/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 23:42:31,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 23:42:31,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 23:42:31,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 23:42:31,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-02 23:42:31,543 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 23:42:31,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 23:42:31,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 23:42:31,545 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 23:42:31,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 23:42:31,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 23:42:31,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 23:42:31,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 23:42:31,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 23:42:31,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 23:42:31,546 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 23:42:31,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 23:42:31,546 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 23:42:31,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 23:42:31,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 23:42:31,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 23:42:31,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 23:42:31,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 23:42:31,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:42:31,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 23:42:31,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-02 23:42:31,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 23:42:31,548 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-02 23:42:31,548 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 23:42:31,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 23:42:31,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 23:42:31,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 23:42:31,928 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 23:42:31,929 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 23:42:31,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-05-02 23:42:31,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dac0a8014/1092d2ac15484388923942b1bf1775e2/FLAG1ac692143 [2021-05-02 23:42:32,511 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 23:42:32,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-05-02 23:42:32,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dac0a8014/1092d2ac15484388923942b1bf1775e2/FLAG1ac692143 [2021-05-02 23:42:32,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dac0a8014/1092d2ac15484388923942b1bf1775e2 [2021-05-02 23:42:32,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 23:42:32,914 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 23:42:32,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 23:42:32,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 23:42:32,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 23:42:32,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:42:32" (1/1) ... [2021-05-02 23:42:32,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@546edc25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:32, skipping insertion in model container [2021-05-02 23:42:32,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:42:32" (1/1) ... [2021-05-02 23:42:32,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 23:42:32,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 23:42:33,120 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-05-02 23:42:33,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:42:33,150 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 23:42:33,173 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-05-02 23:42:33,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:42:33,214 INFO L208 MainTranslator]: Completed translation [2021-05-02 23:42:33,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:33 WrapperNode [2021-05-02 23:42:33,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 23:42:33,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 23:42:33,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 23:42:33,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 23:42:33,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:33" (1/1) ... [2021-05-02 23:42:33,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:33" (1/1) ... [2021-05-02 23:42:33,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:33" (1/1) ... [2021-05-02 23:42:33,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:33" (1/1) ... [2021-05-02 23:42:33,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:33" (1/1) ... [2021-05-02 23:42:33,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:33" (1/1) ... [2021-05-02 23:42:33,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:33" (1/1) ... [2021-05-02 23:42:33,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 23:42:33,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 23:42:33,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 23:42:33,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 23:42:33,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:33" (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 [2021-05-02 23:42:33,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 23:42:33,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 23:42:33,349 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 23:42:33,350 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 23:42:33,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 23:42:33,350 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 23:42:33,350 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 23:42:33,351 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 23:42:33,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 23:42:33,351 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 23:42:33,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 23:42:33,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 23:42:33,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 23:42:33,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 23:42:33,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 23:42:33,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 23:42:33,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 23:42:33,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 23:42:33,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 23:42:33,678 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 23:42:33,678 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-02 23:42:33,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:42:33 BoogieIcfgContainer [2021-05-02 23:42:33,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 23:42:33,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 23:42:33,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 23:42:33,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 23:42:33,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:42:32" (1/3) ... [2021-05-02 23:42:33,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a047131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:42:33, skipping insertion in model container [2021-05-02 23:42:33,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:33" (2/3) ... [2021-05-02 23:42:33,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a047131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:42:33, skipping insertion in model container [2021-05-02 23:42:33,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:42:33" (3/3) ... [2021-05-02 23:42:33,687 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2021-05-02 23:42:33,693 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-02 23:42:33,708 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 23:42:33,725 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 23:42:33,746 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 23:42:33,746 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 23:42:33,746 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-02 23:42:33,746 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 23:42:33,746 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 23:42:33,746 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 23:42:33,747 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 23:42:33,747 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 23:42:33,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 23:42:33,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 23:42:33,768 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:42:33,769 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:42:33,769 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:42:33,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:42:33,775 INFO L82 PathProgramCache]: Analyzing trace with hash -782080232, now seen corresponding path program 1 times [2021-05-02 23:42:33,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:42:33,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556299278] [2021-05-02 23:42:33,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:42:33,840 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:42:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:34,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:42:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:42:34,100 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:42:34,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556299278] [2021-05-02 23:42:34,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1556299278] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:42:34,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:42:34,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 23:42:34,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383897551] [2021-05-02 23:42:34,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 23:42:34,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:42:34,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 23:42:34,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 23:42:34,122 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:42:34,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:42:34,485 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-05-02 23:42:34,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 23:42:34,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-02 23:42:34,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:42:34,498 INFO L225 Difference]: With dead ends: 33 [2021-05-02 23:42:34,498 INFO L226 Difference]: Without dead ends: 16 [2021-05-02 23:42:34,503 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 249.3ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 23:42:34,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-02 23:42:34,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-02 23:42:34,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:42:34,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-02 23:42:34,541 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2021-05-02 23:42:34,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:42:34,542 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-02 23:42:34,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:42:34,542 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-02 23:42:34,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 23:42:34,543 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:42:34,543 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:42:34,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 23:42:34,543 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:42:34,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:42:34,544 INFO L82 PathProgramCache]: Analyzing trace with hash 38085627, now seen corresponding path program 1 times [2021-05-02 23:42:34,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:42:34,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858159043] [2021-05-02 23:42:34,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:42:34,563 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-02 23:42:34,565 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:42:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:34,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:42:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:42:34,738 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:42:34,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858159043] [2021-05-02 23:42:34,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1858159043] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:42:34,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:42:34,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 23:42:34,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63475495] [2021-05-02 23:42:34,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 23:42:34,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:42:34,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 23:42:34,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-02 23:42:34,741 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:42:34,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:42:34,858 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-05-02 23:42:34,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 23:42:34,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 23:42:34,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:42:34,859 INFO L225 Difference]: With dead ends: 21 [2021-05-02 23:42:34,859 INFO L226 Difference]: Without dead ends: 18 [2021-05-02 23:42:34,860 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 139.3ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-05-02 23:42:34,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-02 23:42:34,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-02 23:42:34,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:42:34,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-02 23:42:34,866 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2021-05-02 23:42:34,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:42:34,866 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-02 23:42:34,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:42:34,866 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-02 23:42:34,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 23:42:34,867 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:42:34,867 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:42:34,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 23:42:34,867 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:42:34,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:42:34,868 INFO L82 PathProgramCache]: Analyzing trace with hash -2056506338, now seen corresponding path program 2 times [2021-05-02 23:42:34,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:42:34,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121807238] [2021-05-02 23:42:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:42:34,951 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~main__x~0_13 0) InVars {main_~main__x~0=v_main_~main__x~0_13} OutVars{main_~main__x~0=v_main_~main__x~0_13} AuxVars[] AssignedVars[] [2021-05-02 23:42:35,002 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 97.4 percent of original size [2021-05-02 23:42:35,020 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:42:35,038 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:42:37,166 WARN L205 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:42:41,240 WARN L205 SmtUtils]: Spent 4.07 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-02 23:42:45,458 WARN L205 SmtUtils]: Spent 4.22 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:42:45,465 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-02 23:42:45,472 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:42:48,290 WARN L205 SmtUtils]: Spent 2.82 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-02 23:42:50,594 WARN L205 SmtUtils]: Spent 2.30 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-02 23:42:52,766 WARN L205 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:42:52,768 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-02 23:42:52,770 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-02 23:42:56,856 WARN L205 SmtUtils]: Spent 4.07 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:42:56,862 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:42:56,866 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:01,052 WARN L205 SmtUtils]: Spent 4.18 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-02 23:43:03,586 WARN L205 SmtUtils]: Spent 2.53 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-02 23:43:07,688 WARN L205 SmtUtils]: Spent 4.09 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:43:07,693 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-02 23:43:07,696 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-02 23:43:07,698 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:07,712 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:08,870 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:43:10,051 WARN L205 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-02 23:43:14,120 WARN L205 SmtUtils]: Spent 4.07 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:43:14,138 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-02 23:43:14,140 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:43:14,150 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:18,209 WARN L205 SmtUtils]: Spent 4.06 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:43:19,341 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:43:22,049 WARN L205 SmtUtils]: Spent 2.71 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:43:22,053 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-02 23:43:24,323 WARN L205 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 14 [2021-05-02 23:43:28,537 WARN L205 SmtUtils]: Spent 4.21 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:43:32,611 WARN L205 SmtUtils]: Spent 4.07 s on a formula simplification that was a NOOP. DAG size: 15 [2021-05-02 23:43:33,704 WARN L205 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 12 [2021-05-02 23:43:34,183 WARN L205 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2021-05-02 23:43:38,252 WARN L205 SmtUtils]: Spent 4.07 s on a formula simplification that was a NOOP. DAG size: 9 [2021-05-02 23:43:42,418 WARN L205 SmtUtils]: Spent 4.16 s on a formula simplification that was a NOOP. DAG size: 12 [2021-05-02 23:43:42,424 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:44,613 WARN L205 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-02 23:43:48,647 WARN L205 SmtUtils]: Spent 4.03 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:43:52,688 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:43:52,692 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-02 23:43:52,702 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:52,707 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:53,533 WARN L205 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-05-02 23:43:53,571 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-02 23:43:53,575 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:55,607 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:43:57,717 WARN L205 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-02 23:44:00,180 WARN L205 SmtUtils]: Spent 2.46 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:44:00,184 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-02 23:44:00,186 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-02 23:44:00,390 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:44:00,395 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:44:00,399 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:44:02,857 WARN L205 SmtUtils]: Spent 2.46 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:44:05,104 WARN L205 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-02 23:44:07,147 WARN L205 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:44:07,150 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-02 23:44:07,152 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:44:07,154 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:44:07,158 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:44:07,223 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-02 23:44:07,225 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-02 23:44:07,319 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:44:08,860 WARN L205 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-02 23:44:09,132 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-05-02 23:44:09,135 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-02 23:44:09,172 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:44:13,262 WARN L205 SmtUtils]: Spent 4.09 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:44:15,464 WARN L205 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:44:17,526 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:44:17,530 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-02 23:44:17,921 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-05-02 23:44:18,607 WARN L205 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:44:18,685 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 97.4 percent of original size 263 [2021-05-02 23:44:42,980 WARN L205 SmtUtils]: Spent 24.29 s on a formula simplification that was a NOOP. DAG size: 91 [2021-05-02 23:44:42,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:44:43,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:44:43,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:44:43,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:44:43,626 WARN L205 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 520 DAG size of output: 514 [2021-05-02 23:44:43,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:44:43,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:44:43,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:44:43,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:44:44,213 WARN L205 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 527 DAG size of output: 521 [2021-05-02 23:44:44,218 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:44:44,255 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-02 23:44:44,255 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-02 23:44:44,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 23:44:44,272 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-02 23:44:44,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 11:44:44 BoogieIcfgContainer [2021-05-02 23:44:44,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 23:44:44,273 INFO L168 Benchmark]: Toolchain (without parser) took 131360.24 ms. Allocated memory was 206.6 MB in the beginning and 248.5 MB in the end (delta: 41.9 MB). Free memory was 172.4 MB in the beginning and 122.3 MB in the end (delta: 50.2 MB). Peak memory consumption was 93.0 MB. Max. memory is 8.0 GB. [2021-05-02 23:44:44,274 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 206.6 MB. Free memory is still 188.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 23:44:44,274 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.84 ms. Allocated memory is still 206.6 MB. Free memory was 172.3 MB in the beginning and 190.5 MB in the end (delta: -18.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. [2021-05-02 23:44:44,274 INFO L168 Benchmark]: Boogie Preprocessor took 48.75 ms. Allocated memory is still 206.6 MB. Free memory was 190.5 MB in the beginning and 189.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 23:44:44,274 INFO L168 Benchmark]: RCFGBuilder took 414.61 ms. Allocated memory is still 206.6 MB. Free memory was 189.3 MB in the beginning and 174.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 23:44:44,275 INFO L168 Benchmark]: TraceAbstraction took 130591.31 ms. Allocated memory was 206.6 MB in the beginning and 248.5 MB in the end (delta: 41.9 MB). Free memory was 174.7 MB in the beginning and 122.3 MB in the end (delta: 52.4 MB). Peak memory consumption was 95.9 MB. Max. memory is 8.0 GB. [2021-05-02 23:44:44,276 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 206.6 MB. Free memory is still 188.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 298.84 ms. Allocated memory is still 206.6 MB. Free memory was 172.3 MB in the beginning and 190.5 MB in the end (delta: -18.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.75 ms. Allocated memory is still 206.6 MB. Free memory was 190.5 MB in the beginning and 189.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 414.61 ms. Allocated memory is still 206.6 MB. Free memory was 189.3 MB in the beginning and 174.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 130591.31 ms. Allocated memory was 206.6 MB in the beginning and 248.5 MB in the end (delta: 41.9 MB). Free memory was 174.7 MB in the beginning and 122.3 MB in the end (delta: 52.4 MB). Peak memory consumption was 95.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 57]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1] int __return_main; [L12] int __tmp_55_0; [L13] int __return_65; [L16] int main__x; [L17] int main__y; [L18] main__x = -50 [L19] main__y = __VERIFIER_nondet_int() [L20] COND FALSE !(!(-1000 < main__y)) [L26] COND FALSE !(!(main__y < 1000000)) [L32] COND TRUE main__x < 0 [L34] main__x = main__x + main__y [L35] int main____CPAchecker_TMP_0 = main__y; [L36] main__y = main__y + 1 [L37] __tmp_55_0 = main____CPAchecker_TMP_0 [L39] main____CPAchecker_TMP_0 = __tmp_55_0 [L40] COND TRUE main__x < 0 [L42] main__x = main__x + main__y [L43] int main____CPAchecker_TMP_0 = main__y; [L44] main__y = main__y + 1 [L45] __tmp_55_0 = main____CPAchecker_TMP_0 [L39] main____CPAchecker_TMP_0 = __tmp_55_0 [L40] COND TRUE main__x < 0 [L42] main__x = main__x + main__y [L43] int main____CPAchecker_TMP_0 = main__y; [L44] main__y = main__y + 1 [L45] __tmp_55_0 = main____CPAchecker_TMP_0 [L39] main____CPAchecker_TMP_0 = __tmp_55_0 [L40] COND FALSE !(main__x < 0) [L51] int __tmp_1; [L52] __tmp_1 = main__y > 0 [L53] int __VERIFIER_assert__cond; [L54] __VERIFIER_assert__cond = __tmp_1 [L55] COND TRUE __VERIFIER_assert__cond == 0 [L57] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 130517.1ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 13.4ms, AutomataDifference: 513.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 20 SDslu, 70 SDs, 0 SdLazy, 85 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 180.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 388.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 28.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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 could not prove your program: unable to determine feasibility of some traces [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...