/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 07:20:22,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 07:20:22,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 07:20:22,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 07:20:22,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 07:20:22,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 07:20:22,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 07:20:22,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 07:20:22,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 07:20:22,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 07:20:22,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 07:20:22,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 07:20:22,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 07:20:22,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 07:20:22,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 07:20:22,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 07:20:22,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 07:20:22,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 07:20:22,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 07:20:22,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 07:20:22,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 07:20:22,345 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 07:20:22,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 07:20:22,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 07:20:22,350 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 07:20:22,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 07:20:22,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 07:20:22,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 07:20:22,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 07:20:22,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 07:20:22,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 07:20:22,352 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 07:20:22,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 07:20:22,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 07:20:22,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 07:20:22,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 07:20:22,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 07:20:22,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 07:20:22,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 07:20:22,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 07:20:22,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 07:20:22,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 07:20:22,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 07:20:22,354 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 07:20:22,354 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 07:20:22,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 07:20:22,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 07:20:22,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 07:20:22,658 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 07:20:22,658 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 07:20:22,658 INFO L432 ainManager$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 [2021-05-01 07:20:22,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f1fcef62/55520ffc49bd48299c2675b52dfb7040/FLAGe64e8fe89 [2021-05-01 07:20:23,122 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 07:20:23,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-05-01 07:20:23,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f1fcef62/55520ffc49bd48299c2675b52dfb7040/FLAGe64e8fe89 [2021-05-01 07:20:23,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f1fcef62/55520ffc49bd48299c2675b52dfb7040 [2021-05-01 07:20:23,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 07:20:23,147 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 07:20:23,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 07:20:23,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 07:20:23,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 07:20:23,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:20:23" (1/1) ... [2021-05-01 07:20:23,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7320682e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:23, skipping insertion in model container [2021-05-01 07:20:23,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:20:23" (1/1) ... [2021-05-01 07:20:23,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 07:20:23,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 07:20:23,271 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] [2021-05-01 07:20:23,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:20:23,285 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 07:20:23,298 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] [2021-05-01 07:20:23,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:20:23,309 INFO L208 MainTranslator]: Completed translation [2021-05-01 07:20:23,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:23 WrapperNode [2021-05-01 07:20:23,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 07:20:23,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 07:20:23,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 07:20:23,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 07:20:23,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:23" (1/1) ... [2021-05-01 07:20:23,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:23" (1/1) ... [2021-05-01 07:20:23,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:23" (1/1) ... [2021-05-01 07:20:23,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:23" (1/1) ... [2021-05-01 07:20:23,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:23" (1/1) ... [2021-05-01 07:20:23,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:23" (1/1) ... [2021-05-01 07:20:23,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:23" (1/1) ... [2021-05-01 07:20:23,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 07:20:23,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 07:20:23,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 07:20:23,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 07:20:23,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:23" (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 [2021-05-01 07:20:23,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 07:20:23,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 07:20:23,443 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 07:20:23,444 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 07:20:23,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 07:20:23,444 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 07:20:23,444 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 07:20:23,444 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 07:20:23,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 07:20:23,444 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 07:20:23,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 07:20:23,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 07:20:23,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 07:20:23,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 07:20:23,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 07:20:23,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 07:20:23,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 07:20:23,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 07:20:23,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 07:20:23,687 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 07:20:23,687 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-01 07:20:23,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:20:23 BoogieIcfgContainer [2021-05-01 07:20:23,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 07:20:23,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 07:20:23,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 07:20:23,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 07:20:23,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 07:20:23" (1/3) ... [2021-05-01 07:20:23,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d31ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:20:23, skipping insertion in model container [2021-05-01 07:20:23,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:23" (2/3) ... [2021-05-01 07:20:23,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d31ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:20:23, skipping insertion in model container [2021-05-01 07:20:23,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:20:23" (3/3) ... [2021-05-01 07:20:23,694 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2021-05-01 07:20:23,698 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 07:20:23,701 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 07:20:23,724 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 07:20:23,756 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 07:20:23,757 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 07:20:23,757 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 07:20:23,757 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 07:20:23,757 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 07:20:23,757 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 07:20:23,757 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 07:20:23,757 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 07:20:23,786 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) [2021-05-01 07:20:23,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-01 07:20:23,792 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:20:23,792 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:20:23,793 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:20:23,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:20:23,804 INFO L82 PathProgramCache]: Analyzing trace with hash -782080232, now seen corresponding path program 1 times [2021-05-01 07:20:23,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:20:23,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55015921] [2021-05-01 07:20:23,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:20:23,856 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:20:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:20:24,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:24,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:24,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:24,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 07:20:24,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:24,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 07:20:24,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:24,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:20:24,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:24,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:24,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:20:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:20:24,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:24,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:20:24,101 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:20:24,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55015921] [2021-05-01 07:20:24,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [55015921] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:20:24,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:20:24,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-01 07:20:24,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146934549] [2021-05-01 07:20:24,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-01 07:20:24,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:20:24,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-01 07:20:24,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-01 07:20:24,116 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) [2021-05-01 07:20:24,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:20:24,311 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-05-01 07:20:24,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-01 07:20:24,314 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 [2021-05-01 07:20:24,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:20:24,321 INFO L225 Difference]: With dead ends: 33 [2021-05-01 07:20:24,321 INFO L226 Difference]: Without dead ends: 16 [2021-05-01 07:20:24,324 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 147.8ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-01 07:20:24,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-01 07:20:24,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-01 07:20:24,357 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) [2021-05-01 07:20:24,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-01 07:20:24,359 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2021-05-01 07:20:24,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:20:24,359 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-01 07:20:24,359 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) [2021-05-01 07:20:24,359 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-01 07:20:24,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-01 07:20:24,360 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:20:24,360 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:20:24,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 07:20:24,360 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:20:24,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:20:24,361 INFO L82 PathProgramCache]: Analyzing trace with hash 38085627, now seen corresponding path program 1 times [2021-05-01 07:20:24,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:20:24,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780954569] [2021-05-01 07:20:24,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:20:24,378 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:20:24,380 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:20:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:20:24,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:24,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:24,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:24,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 07:20:24,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:24,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 07:20:24,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:24,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:20:24,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:24,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:20:24,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:24,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:24,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:20:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:20:24,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:24,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:20:24,513 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:20:24,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780954569] [2021-05-01 07:20:24,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1780954569] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:20:24,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:20:24,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-01 07:20:24,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411521893] [2021-05-01 07:20:24,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-01 07:20:24,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:20:24,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-01 07:20:24,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-01 07:20:24,519 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) [2021-05-01 07:20:24,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:20:24,614 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-05-01 07:20:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-01 07:20:24,616 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 [2021-05-01 07:20:24,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:20:24,619 INFO L225 Difference]: With dead ends: 21 [2021-05-01 07:20:24,619 INFO L226 Difference]: Without dead ends: 18 [2021-05-01 07:20:24,621 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 81.9ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-05-01 07:20:24,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-01 07:20:24,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-01 07:20:24,633 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) [2021-05-01 07:20:24,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-01 07:20:24,634 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2021-05-01 07:20:24,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:20:24,635 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-01 07:20:24,635 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) [2021-05-01 07:20:24,635 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-01 07:20:24,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-01 07:20:24,636 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:20:24,637 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:20:24,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 07:20:24,637 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:20:24,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:20:24,639 INFO L82 PathProgramCache]: Analyzing trace with hash -2056506338, now seen corresponding path program 2 times [2021-05-01 07:20:24,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:20:24,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844918186] [2021-05-01 07:20:24,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:20:24,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:24,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:20:24,713 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[] [2021-05-01 07:20:24,781 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 97.4 percent of original size [2021-05-01 07:20:24,800 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:24,815 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:26,879 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-01 07:20:26,879 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:29,477 WARN L205 SmtUtils]: Spent 2.60 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-01 07:20:29,479 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,593 WARN L205 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:20:31,594 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,609 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 07:20:31,613 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:32,638 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-01 07:20:32,639 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:34,774 WARN L205 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:20:34,775 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:37,114 WARN L205 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:20:37,115 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:37,117 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:20:37,119 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 07:20:37,138 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:37,142 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:37,145 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:41,182 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-01 07:20:41,183 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:44,223 WARN L205 SmtUtils]: Spent 3.04 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-01 07:20:44,224 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:46,273 WARN L205 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:20:46,274 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:46,276 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 07:20:46,278 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 07:20:46,279 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:46,282 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:46,744 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-05-01 07:20:46,745 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:46,918 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:20:46,919 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:49,548 WARN L205 SmtUtils]: Spent 2.63 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:20:49,549 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:49,561 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:20:49,562 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:20:50,521 WARN L205 SmtUtils]: Spent 952.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-05-01 07:20:50,522 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:50,577 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:50,581 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:52,726 WARN L205 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-01 07:20:52,727 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:56,215 WARN L205 SmtUtils]: Spent 3.49 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:20:56,216 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:58,033 WARN L205 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 9 [2021-05-01 07:20:58,033 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:58,038 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 07:20:58,046 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:00,125 WARN L205 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-01 07:21:00,125 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:04,165 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:21:04,166 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:06,307 WARN L205 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-01 07:21:06,309 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:06,311 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:21:08,464 WARN L205 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 12 [2021-05-01 07:21:08,465 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:10,474 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 7 [2021-05-01 07:21:10,475 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:11,280 WARN L205 SmtUtils]: Spent 804.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-05-01 07:21:11,281 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:11,543 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-05-01 07:21:11,544 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:12,066 WARN L205 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-05-01 07:21:12,067 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:12,072 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:12,078 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:12,096 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:12,120 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:12,138 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:12,140 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 07:21:12,144 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,235 WARN L205 SmtUtils]: Spent 4.09 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-01 07:21:16,237 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:18,307 WARN L205 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-01 07:21:18,308 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:20,393 WARN L205 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:21:20,396 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:20,399 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 07:21:20,402 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 07:21:22,431 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:21:22,432 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:22,438 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:22,455 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:24,519 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-01 07:21:24,521 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:26,727 WARN L205 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-01 07:21:26,729 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:28,769 WARN L205 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:21:28,771 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:28,773 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 07:21:28,775 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 07:21:28,778 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:28,782 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:28,812 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:28,835 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:28,856 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:28,865 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 07:21:28,868 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 07:21:28,895 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:28,919 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:28,931 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:28,958 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:28,983 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:29,009 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:29,013 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:21:29,032 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:29,085 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:29,101 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:29,117 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:29,133 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:29,139 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:33,220 WARN L205 SmtUtils]: Spent 4.08 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-01 07:21:33,221 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:35,289 WARN L205 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-01 07:21:35,291 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:39,341 WARN L205 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:21:39,343 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:39,345 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:21:39,354 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:39,362 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:39,374 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:39,385 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:39,395 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:39,409 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:39,417 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:39,425 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 97.4 percent of original size 263 [2021-05-01 07:21:48,595 WARN L205 SmtUtils]: Spent 9.17 s on a formula simplification that was a NOOP. DAG size: 91 [2021-05-01 07:21:48,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:48,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:21:48,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:48,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 07:21:48,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:21:48,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:48,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:21:48,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:21:48,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:48,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:21:48,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:21:48,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:48,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:21:48,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 443 [2021-05-01 07:21:49,354 WARN L205 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 520 DAG size of output: 514 [2021-05-01 07:21:49,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:49,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:21:49,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:49,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:21:49,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:21:49,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:49,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:21:49,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:21:49,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:49,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 07:21:49,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:21:49,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:49,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:21:49,930 WARN L205 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 527 DAG size of output: 521 [2021-05-01 07:21:49,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19611 [2021-05-01 07:21:49,936 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:21:49,968 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 07:21:49,969 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 07:21:49,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 07:21:49,994 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 07:21:49,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 07:21:49 BoogieIcfgContainer [2021-05-01 07:21:49,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 07:21:49,997 INFO L168 Benchmark]: Toolchain (without parser) took 86848.19 ms. Allocated memory was 176.2 MB in the beginning and 227.5 MB in the end (delta: 51.4 MB). Free memory was 142.9 MB in the beginning and 103.7 MB in the end (delta: 39.1 MB). Peak memory consumption was 91.9 MB. Max. memory is 8.0 GB. [2021-05-01 07:21:49,998 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 176.2 MB. Free memory is still 159.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 07:21:50,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.77 ms. Allocated memory is still 176.2 MB. Free memory was 142.7 MB in the beginning and 132.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-01 07:21:50,002 INFO L168 Benchmark]: Boogie Preprocessor took 23.78 ms. Allocated memory is still 176.2 MB. Free memory was 132.7 MB in the beginning and 131.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-01 07:21:50,002 INFO L168 Benchmark]: RCFGBuilder took 353.44 ms. Allocated memory is still 176.2 MB. Free memory was 131.2 MB in the beginning and 147.6 MB in the end (delta: -16.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-05-01 07:21:50,002 INFO L168 Benchmark]: TraceAbstraction took 86304.98 ms. Allocated memory was 176.2 MB in the beginning and 227.5 MB in the end (delta: 51.4 MB). Free memory was 147.2 MB in the beginning and 103.7 MB in the end (delta: 43.5 MB). Peak memory consumption was 95.8 MB. Max. memory is 8.0 GB. [2021-05-01 07:21:50,010 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 176.2 MB. Free memory is still 159.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 159.77 ms. Allocated memory is still 176.2 MB. Free memory was 142.7 MB in the beginning and 132.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.78 ms. Allocated memory is still 176.2 MB. Free memory was 132.7 MB in the beginning and 131.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 353.44 ms. Allocated memory is still 176.2 MB. Free memory was 131.2 MB in the beginning and 147.6 MB in the end (delta: -16.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 86304.98 ms. Allocated memory was 176.2 MB in the beginning and 227.5 MB in the end (delta: 51.4 MB). Free memory was 147.2 MB in the beginning and 103.7 MB in the end (delta: 43.5 MB). Peak memory consumption was 95.8 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: 86224.2ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 28.6ms, AutomataDifference: 321.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 20 SDslu, 70 SDs, 0 SdLazy, 85 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 229.8ms 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: 32.4ms 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...