/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/cggmp2005b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 07:11:07,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 07:11:07,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 07:11:07,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 07:11:07,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 07:11:07,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 07:11:07,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 07:11:07,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 07:11:07,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 07:11:07,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 07:11:07,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 07:11:07,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 07:11:07,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 07:11:07,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 07:11:07,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 07:11:07,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 07:11:07,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 07:11:07,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 07:11:07,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 07:11:07,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 07:11:07,449 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 07:11:07,475 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 07:11:07,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 07:11:07,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 07:11:07,478 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 07:11:07,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 07:11:07,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 07:11:07,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 07:11:07,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 07:11:07,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 07:11:07,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 07:11:07,479 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 07:11:07,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 07:11:07,479 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 07:11:07,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 07:11:07,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 07:11:07,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 07:11:07,480 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 07:11:07,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 07:11:07,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 07:11:07,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 07:11:07,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 07:11:07,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 07:11:07,481 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 07:11:07,481 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 07:11:07,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 07:11:07,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 07:11:07,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 07:11:07,795 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 07:11:07,796 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 07:11:07,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b.i [2021-05-01 07:11:07,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c180e66a7/50752b7dec41481f8e574495a5c51485/FLAG91f3c17a9 [2021-05-01 07:11:08,257 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 07:11:08,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b.i [2021-05-01 07:11:08,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c180e66a7/50752b7dec41481f8e574495a5c51485/FLAG91f3c17a9 [2021-05-01 07:11:08,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c180e66a7/50752b7dec41481f8e574495a5c51485 [2021-05-01 07:11:08,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 07:11:08,683 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 07:11:08,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 07:11:08,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 07:11:08,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 07:11:08,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:11:08" (1/1) ... [2021-05-01 07:11:08,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@80104b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:11:08, skipping insertion in model container [2021-05-01 07:11:08,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:11:08" (1/1) ... [2021-05-01 07:11:08,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 07:11:08,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 07:11:08,789 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/cggmp2005b.i[895,908] [2021-05-01 07:11:08,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:11:08,806 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 07:11:08,848 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/cggmp2005b.i[895,908] [2021-05-01 07:11:08,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:11:08,864 INFO L208 MainTranslator]: Completed translation [2021-05-01 07:11:08,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:11:08 WrapperNode [2021-05-01 07:11:08,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 07:11:08,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 07:11:08,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 07:11:08,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 07:11:08,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:11:08" (1/1) ... [2021-05-01 07:11:08,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:11:08" (1/1) ... [2021-05-01 07:11:08,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:11:08" (1/1) ... [2021-05-01 07:11:08,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:11:08" (1/1) ... [2021-05-01 07:11:08,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:11:08" (1/1) ... [2021-05-01 07:11:08,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:11:08" (1/1) ... [2021-05-01 07:11:08,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:11:08" (1/1) ... [2021-05-01 07:11:08,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 07:11:08,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 07:11:08,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 07:11:08,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 07:11:08,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:11:08" (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 07:11:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 07:11:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 07:11:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 07:11:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 07:11:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 07:11:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 07:11:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 07:11:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 07:11:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-01 07:11:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-01 07:11:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 07:11:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 07:11:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 07:11:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 07:11:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 07:11:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 07:11:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 07:11:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 07:11:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 07:11:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 07:11:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 07:11:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 07:11:09,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 07:11:09,200 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-01 07:11:09,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:11:09 BoogieIcfgContainer [2021-05-01 07:11:09,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 07:11:09,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 07:11:09,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 07:11:09,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 07:11:09,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 07:11:08" (1/3) ... [2021-05-01 07:11:09,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320befe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:11:09, skipping insertion in model container [2021-05-01 07:11:09,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:11:08" (2/3) ... [2021-05-01 07:11:09,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320befe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:11:09, skipping insertion in model container [2021-05-01 07:11:09,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:11:09" (3/3) ... [2021-05-01 07:11:09,205 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005b.i [2021-05-01 07:11:09,223 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 07:11:09,225 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 07:11:09,235 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 07:11:09,261 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 07:11:09,261 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 07:11:09,261 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 07:11:09,261 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 07:11:09,261 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 07:11:09,261 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 07:11:09,261 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 07:11:09,261 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 07:11:09,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:09,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 07:11:09,276 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:09,276 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:09,276 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:09,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:09,282 INFO L82 PathProgramCache]: Analyzing trace with hash -990540922, now seen corresponding path program 1 times [2021-05-01 07:11:09,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:09,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692183684] [2021-05-01 07:11:09,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:09,330 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:11:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:09,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:09,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:09,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:09,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:09,470 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 07:11:09,471 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:09,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692183684] [2021-05-01 07:11:09,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1692183684] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:09,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:09,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 07:11:09,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517640948] [2021-05-01 07:11:09,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 07:11:09,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:09,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 07:11:09,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 07:11:09,489 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:11:09,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:09,549 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2021-05-01 07:11:09,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 07:11:09,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-01 07:11:09,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:09,555 INFO L225 Difference]: With dead ends: 38 [2021-05-01 07:11:09,555 INFO L226 Difference]: Without dead ends: 15 [2021-05-01 07:11:09,557 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 07:11:09,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-01 07:11:09,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-01 07:11:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:11:09,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-05-01 07:11:09,586 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2021-05-01 07:11:09,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:09,587 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-05-01 07:11:09,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:11:09,587 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-05-01 07:11:09,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 07:11:09,588 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:09,588 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:09,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 07:11:09,589 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:09,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:09,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1017323031, now seen corresponding path program 1 times [2021-05-01 07:11:09,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:09,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858691335] [2021-05-01 07:11:09,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:09,600 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:11:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:09,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:09,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:09,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:09,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:09,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:09,689 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 07:11:09,689 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:09,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858691335] [2021-05-01 07:11:09,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [858691335] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:09,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:09,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-01 07:11:09,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908839228] [2021-05-01 07:11:09,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-01 07:11:09,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:09,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-01 07:11:09,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-01 07:11:09,692 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:11:09,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:09,753 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-05-01 07:11:09,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-01 07:11:09,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-01 07:11:09,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:09,754 INFO L225 Difference]: With dead ends: 21 [2021-05-01 07:11:09,754 INFO L226 Difference]: Without dead ends: 16 [2021-05-01 07:11:09,755 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-01 07:11:09,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-01 07:11:09,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-01 07:11:09,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:11:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-05-01 07:11:09,765 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2021-05-01 07:11:09,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:09,765 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-05-01 07:11:09,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:11:09,765 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-05-01 07:11:09,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-01 07:11:09,766 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:09,766 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:09,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 07:11:09,766 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:09,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:09,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1873832261, now seen corresponding path program 1 times [2021-05-01 07:11:09,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:09,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980053840] [2021-05-01 07:11:09,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:09,800 INFO L142 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-05-01 07:11:09,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:09,813 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 20 v_main_~j~0_7) (<= v_main_~i~0_9 100)) InVars {main_~i~0=v_main_~i~0_9, main_~j~0=v_main_~j~0_7} OutVars{main_~i~0=v_main_~i~0_9, main_~j~0=v_main_~j~0_7} AuxVars[] AssignedVars[] [2021-05-01 07:11:09,832 WARN L240 tifierPushTermWalker]: treesize reduction 17, result has 77.0 percent of original size [2021-05-01 07:11:09,838 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,854 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,857 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:09,857 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:09,859 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,862 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:09,863 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,865 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,867 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,869 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,872 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,873 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,875 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,877 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,878 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,879 WARN L245 tifierPushTermWalker]: treesize reduction 17, result has 77.0 percent of original size 57 [2021-05-01 07:11:09,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:11:09,899 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:09,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:09,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:11:09,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:09,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:09,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:09,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:09,950 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 07:11:09,953 INFO L142 QuantifierPusher]: treesize reduction 32, result has 33.3 percent of original size [2021-05-01 07:11:09,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:11:09,958 INFO L142 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-05-01 07:11:09,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:11:09,965 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-05-01 07:11:09,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:09,966 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:09,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980053840] [2021-05-01 07:11:09,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1980053840] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:09,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:09,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-01 07:11:09,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868148647] [2021-05-01 07:11:09,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-01 07:11:09,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:09,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-01 07:11:09,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-01 07:11:09,967 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:11:10,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:10,031 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2021-05-01 07:11:10,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-01 07:11:10,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-01 07:11:10,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:10,032 INFO L225 Difference]: With dead ends: 26 [2021-05-01 07:11:10,032 INFO L226 Difference]: Without dead ends: 17 [2021-05-01 07:11:10,032 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 56.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-05-01 07:11:10,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-01 07:11:10,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-01 07:11:10,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:11:10,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-01 07:11:10,036 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 15 [2021-05-01 07:11:10,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:10,036 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-01 07:11:10,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:11:10,036 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-01 07:11:10,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-01 07:11:10,037 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:10,037 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:10,037 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 07:11:10,037 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:10,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:10,038 INFO L82 PathProgramCache]: Analyzing trace with hash -479695372, now seen corresponding path program 1 times [2021-05-01 07:11:10,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:10,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118360297] [2021-05-01 07:11:10,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:10,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:11:10,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:10,052 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~j~0_9 20) InVars {main_~j~0=v_main_~j~0_9} OutVars{main_~j~0=v_main_~j~0_9} AuxVars[] AssignedVars[] [2021-05-01 07:11:10,059 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size [2021-05-01 07:11:10,062 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,069 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,073 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:10,076 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,078 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,079 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:11:10,080 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:11:10,082 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,084 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,087 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,089 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,090 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:11:10,091 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:11:10,096 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,098 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,105 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,112 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:11:10,115 INFO L108 tifierPushTermWalker]: treesize reduction 8, result has 11.1 percent of original size [2021-05-01 07:11:10,131 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,134 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,138 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,142 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,144 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:11:10,152 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,155 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,157 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,159 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,161 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size 50 [2021-05-01 07:11:12,244 WARN L205 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 34 [2021-05-01 07:11:12,248 INFO L142 QuantifierPusher]: treesize reduction 16, result has 75.8 percent of original size [2021-05-01 07:11:12,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:11:12,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:11:12,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 07:11:12,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:11:12,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:11:12,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 07:11:12,271 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.8 percent of original size [2021-05-01 07:11:12,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:12,273 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 19 (+ v_main_~i~0_16 v_main_~j~0_13)) (< v_main_~j~0_13 20) (<= v_main_~i~0_16 100)) InVars {main_~i~0=v_main_~i~0_16, main_~j~0=v_main_~j~0_13} OutVars{main_~i~0=v_main_~i~0_16, main_~j~0=v_main_~j~0_13} AuxVars[] AssignedVars[] [2021-05-01 07:11:12,291 WARN L240 tifierPushTermWalker]: treesize reduction 16, result has 96.3 percent of original size [2021-05-01 07:11:12,309 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,322 INFO L732 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-05-01 07:11:12,326 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,327 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,329 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,357 INFO L108 tifierPushTermWalker]: treesize reduction 17, result has 5.6 percent of original size [2021-05-01 07:11:12,359 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:11:12,360 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:12,361 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 07:11:12,495 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 1 [2021-05-01 07:11:12,495 INFO L108 tifierPushTermWalker]: treesize reduction 9, result has 10.0 percent of original size [2021-05-01 07:11:12,497 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:12,499 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,506 INFO L108 tifierPushTermWalker]: treesize reduction 14, result has 6.7 percent of original size [2021-05-01 07:11:12,507 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:11:12,509 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:12,509 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 07:11:12,510 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 07:11:12,516 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,517 INFO L732 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-05-01 07:11:12,519 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,520 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,522 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,545 INFO L108 tifierPushTermWalker]: treesize reduction 19, result has 5.0 percent of original size [2021-05-01 07:11:12,547 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:11:12,548 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:12,548 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:11:12,550 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,885 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-05-01 07:11:12,885 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,040 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 1 [2021-05-01 07:11:13,040 INFO L108 tifierPushTermWalker]: treesize reduction 17, result has 5.6 percent of original size [2021-05-01 07:11:13,379 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:11:13,380 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,380 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 07:11:13,467 INFO L108 tifierPushTermWalker]: treesize reduction 9, result has 10.0 percent of original size [2021-05-01 07:11:13,469 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:13,470 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 07:11:13,471 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,623 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 1 [2021-05-01 07:11:13,623 INFO L108 tifierPushTermWalker]: treesize reduction 6, result has 14.3 percent of original size [2021-05-01 07:11:13,659 INFO L108 tifierPushTermWalker]: treesize reduction 19, result has 5.0 percent of original size [2021-05-01 07:11:14,063 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 1 [2021-05-01 07:11:14,063 INFO L108 tifierPushTermWalker]: treesize reduction 17, result has 5.6 percent of original size [2021-05-01 07:11:14,338 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-05-01 07:11:14,338 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,417 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,419 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 07:11:14,419 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-05-01 07:11:14,425 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:11:14,430 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:14,435 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:14,439 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:14,441 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,452 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:14,453 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:14,456 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,459 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,462 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,464 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,467 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,469 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,472 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,474 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,476 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,478 INFO L732 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-05-01 07:11:14,480 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,480 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,482 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,488 INFO L108 tifierPushTermWalker]: treesize reduction 17, result has 5.6 percent of original size [2021-05-01 07:11:14,489 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:14,491 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:14,491 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 07:11:14,493 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,503 INFO L108 tifierPushTermWalker]: treesize reduction 14, result has 6.7 percent of original size [2021-05-01 07:11:14,505 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:14,506 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:14,507 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:11:14,522 INFO L108 tifierPushTermWalker]: treesize reduction 7, result has 12.5 percent of original size [2021-05-01 07:11:14,524 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:14,525 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 07:11:14,528 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,530 INFO L732 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-05-01 07:11:14,532 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,533 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,535 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,540 INFO L108 tifierPushTermWalker]: treesize reduction 19, result has 5.0 percent of original size [2021-05-01 07:11:14,541 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:11:14,543 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:14,543 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:11:14,545 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,551 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,556 INFO L108 tifierPushTermWalker]: treesize reduction 17, result has 5.6 percent of original size [2021-05-01 07:11:14,560 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,561 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 07:11:14,565 INFO L108 tifierPushTermWalker]: treesize reduction 9, result has 10.0 percent of original size [2021-05-01 07:11:14,566 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:14,567 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 07:11:14,568 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,573 INFO L108 tifierPushTermWalker]: treesize reduction 6, result has 14.3 percent of original size [2021-05-01 07:11:14,576 INFO L108 tifierPushTermWalker]: treesize reduction 19, result has 5.0 percent of original size [2021-05-01 07:11:14,579 INFO L108 tifierPushTermWalker]: treesize reduction 17, result has 5.6 percent of original size [2021-05-01 07:11:14,582 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,584 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,585 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 07:11:14,585 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-05-01 07:11:14,588 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,592 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,596 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,597 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,601 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,601 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:14,605 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,608 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,611 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,614 INFO L108 tifierPushTermWalker]: treesize reduction 45, result has 2.2 percent of original size [2021-05-01 07:11:14,616 INFO L108 tifierPushTermWalker]: treesize reduction 47, result has 2.1 percent of original size [2021-05-01 07:11:14,617 INFO L108 tifierPushTermWalker]: treesize reduction 13, result has 7.1 percent of original size [2021-05-01 07:11:14,619 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,622 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,623 WARN L245 tifierPushTermWalker]: treesize reduction 16, result has 96.3 percent of original size 411 [2021-05-01 07:11:14,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-05-01 07:11:14,651 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:14,658 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 07:11:14,658 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 07:11:14,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-01 07:11:14,669 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 07:11:14,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 07:11:14 BoogieIcfgContainer [2021-05-01 07:11:14,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 07:11:14,670 INFO L168 Benchmark]: Toolchain (without parser) took 5987.14 ms. Allocated memory was 226.5 MB in the beginning and 272.6 MB in the end (delta: 46.1 MB). Free memory was 191.9 MB in the beginning and 191.3 MB in the end (delta: 606.5 kB). Peak memory consumption was 47.7 MB. Max. memory is 8.0 GB. [2021-05-01 07:11:14,670 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 226.5 MB. Free memory is still 208.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 07:11:14,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.19 ms. Allocated memory is still 226.5 MB. Free memory was 191.7 MB in the beginning and 209.8 MB in the end (delta: -18.1 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. [2021-05-01 07:11:14,670 INFO L168 Benchmark]: Boogie Preprocessor took 29.44 ms. Allocated memory is still 226.5 MB. Free memory was 209.8 MB in the beginning and 208.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-01 07:11:14,670 INFO L168 Benchmark]: RCFGBuilder took 304.34 ms. Allocated memory is still 226.5 MB. Free memory was 208.3 MB in the beginning and 194.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-01 07:11:14,671 INFO L168 Benchmark]: TraceAbstraction took 5467.45 ms. Allocated memory was 226.5 MB in the beginning and 272.6 MB in the end (delta: 46.1 MB). Free memory was 193.7 MB in the beginning and 191.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 8.0 GB. [2021-05-01 07:11:14,671 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 226.5 MB. Free memory is still 208.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 181.19 ms. Allocated memory is still 226.5 MB. Free memory was 191.7 MB in the beginning and 209.8 MB in the end (delta: -18.1 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.44 ms. Allocated memory is still 226.5 MB. Free memory was 209.8 MB in the beginning and 208.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 304.34 ms. Allocated memory is still 226.5 MB. Free memory was 208.3 MB in the beginning and 194.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5467.45 ms. Allocated memory was 226.5 MB in the beginning and 272.6 MB in the end (delta: 46.1 MB). Free memory was 193.7 MB in the beginning and 191.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 19]: 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: [L25] int i,j,k; [L26] i = 0 [L27] k = 9 [L28] j = -100 [L29] COND TRUE i <= 100 [L30] i = i + 1 [L31] COND TRUE j < 20 [L32] j = i + j [L31] COND FALSE !(j < 20) [L34] k = 4 [L35] COND FALSE !(k <= 3) [L29] COND FALSE !(i <= 100) [L39] CALL __VERIFIER_assert(k == 4) [L18] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 5402.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 10.3ms, AutomataDifference: 209.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 51 SDtfs, 37 SDslu, 22 SDs, 0 SdLazy, 45 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 142.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 33.9ms AutomataMinimizationTime, 3 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 Received shutdown request...