/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:13:51,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:13:51,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:13:51,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:13:51,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:13:51,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:13:51,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:13:51,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:13:51,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:13:51,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:13:51,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:13:51,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:13:51,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:13:51,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:13:51,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:13:51,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:13:51,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:13:51,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:13:51,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:13:51,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:13:51,814 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:13:51,840 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:13:51,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:13:51,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:13:51,845 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:13:51,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:13:51,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:13:51,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:13:51,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:13:51,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:13:51,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:13:51,847 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:13:51,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:13:51,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:13:51,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:13:51,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:13:51,849 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:13:51,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:13:51,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:13:51,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:13:51,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:13:51,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:13:51,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:13:51,851 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:13:51,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:13:52,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:13:52,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:13:52,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:13:52,338 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:13:52,341 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:13:52,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c [2021-02-24 04:13:52,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1ee32f6/30b04bb78b1f4b67bba7ecee9379418a/FLAG15860c09e [2021-02-24 04:13:53,078 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:13:53,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c [2021-02-24 04:13:53,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1ee32f6/30b04bb78b1f4b67bba7ecee9379418a/FLAG15860c09e [2021-02-24 04:13:53,456 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1ee32f6/30b04bb78b1f4b67bba7ecee9379418a [2021-02-24 04:13:53,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:13:53,473 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:13:53,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:13:53,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:13:53,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:13:53,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:13:53" (1/1) ... [2021-02-24 04:13:53,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ebcf40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:53, skipping insertion in model container [2021-02-24 04:13:53,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:13:53" (1/1) ... [2021-02-24 04:13:53,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:13:53,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:13:53,659 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c[454,467] [2021-02-24 04:13:53,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:13:53,674 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:13:53,690 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c[454,467] [2021-02-24 04:13:53,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:13:53,708 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:13:53,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:53 WrapperNode [2021-02-24 04:13:53,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:13:53,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:13:53,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:13:53,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:13:53,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:53" (1/1) ... [2021-02-24 04:13:53,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:53" (1/1) ... [2021-02-24 04:13:53,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:53" (1/1) ... [2021-02-24 04:13:53,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:53" (1/1) ... [2021-02-24 04:13:53,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:53" (1/1) ... [2021-02-24 04:13:53,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:53" (1/1) ... [2021-02-24 04:13:53,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:53" (1/1) ... [2021-02-24 04:13:53,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:13:53,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:13:53,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:13:53,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:13:53,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:53" (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 [2021-02-24 04:13:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:13:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:13:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:13:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-02-24 04:13:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:13:53,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:13:53,850 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:13:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:13:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:13:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:13:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-02-24 04:13:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:13:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:13:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:13:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:13:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:13:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:13:53,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:13:54,067 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:13:54,068 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 04:13:54,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:13:54 BoogieIcfgContainer [2021-02-24 04:13:54,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:13:54,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:13:54,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:13:54,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:13:54,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:13:53" (1/3) ... [2021-02-24 04:13:54,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b8caf39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:13:54, skipping insertion in model container [2021-02-24 04:13:54,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:13:53" (2/3) ... [2021-02-24 04:13:54,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b8caf39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:13:54, skipping insertion in model container [2021-02-24 04:13:54,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:13:54" (3/3) ... [2021-02-24 04:13:54,080 INFO L111 eAbstractionObserver]: Analyzing ICFG id_i25_o25-2.c [2021-02-24 04:13:54,087 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:13:54,092 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:13:54,115 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:13:54,142 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:13:54,143 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:13:54,143 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:13:54,143 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:13:54,143 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:13:54,143 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:13:54,143 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:13:54,144 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:13:54,188 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2021-02-24 04:13:54,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-24 04:13:54,202 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:54,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:54,204 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:54,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:54,214 INFO L82 PathProgramCache]: Analyzing trace with hash -777358502, now seen corresponding path program 1 times [2021-02-24 04:13:54,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:54,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902446446] [2021-02-24 04:13:54,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:54,396 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:54,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:54,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:54,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:54,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:54,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:54,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:54,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:54,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:54,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:54,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:54,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:54,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:54,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:54,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:54,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:54,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:54,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:13:54,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902446446] [2021-02-24 04:13:54,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:54,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:13:54,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674704348] [2021-02-24 04:13:54,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:13:54,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:54,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:13:54,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:13:54,855 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 6 states. [2021-02-24 04:13:55,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:55,155 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-02-24 04:13:55,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 04:13:55,157 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-24 04:13:55,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:55,168 INFO L225 Difference]: With dead ends: 48 [2021-02-24 04:13:55,169 INFO L226 Difference]: Without dead ends: 31 [2021-02-24 04:13:55,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-24 04:13:55,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-02-24 04:13:55,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-02-24 04:13:55,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-24 04:13:55,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-02-24 04:13:55,279 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 24 [2021-02-24 04:13:55,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:55,279 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-02-24 04:13:55,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:13:55,280 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-02-24 04:13:55,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-24 04:13:55,282 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:55,283 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:55,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:13:55,285 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:55,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:55,289 INFO L82 PathProgramCache]: Analyzing trace with hash 814440848, now seen corresponding path program 1 times [2021-02-24 04:13:55,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:55,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530321053] [2021-02-24 04:13:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:55,301 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:55,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:55,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:55,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:55,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:55,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:55,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:55,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:55,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:55,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:55,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:55,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-24 04:13:55,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530321053] [2021-02-24 04:13:55,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:55,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 04:13:55,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965598681] [2021-02-24 04:13:55,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 04:13:55,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:55,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 04:13:55,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-24 04:13:55,473 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2021-02-24 04:13:55,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:55,687 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-02-24 04:13:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 04:13:55,688 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2021-02-24 04:13:55,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:55,689 INFO L225 Difference]: With dead ends: 42 [2021-02-24 04:13:55,690 INFO L226 Difference]: Without dead ends: 36 [2021-02-24 04:13:55,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:13:55,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-24 04:13:55,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-02-24 04:13:55,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-24 04:13:55,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-02-24 04:13:55,705 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 32 [2021-02-24 04:13:55,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:55,705 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-02-24 04:13:55,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 04:13:55,706 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-02-24 04:13:55,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-24 04:13:55,707 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:55,708 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:55,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:13:55,708 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:55,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:55,709 INFO L82 PathProgramCache]: Analyzing trace with hash -545888486, now seen corresponding path program 2 times [2021-02-24 04:13:55,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:55,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722913255] [2021-02-24 04:13:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:55,714 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:55,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:55,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:55,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:55,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:55,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:55,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:55,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:55,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:55,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:55,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:55,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:55,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:55,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:55,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:55,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-02-24 04:13:55,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722913255] [2021-02-24 04:13:55,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:55,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 04:13:55,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993754169] [2021-02-24 04:13:55,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 04:13:55,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:55,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 04:13:55,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-24 04:13:55,999 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2021-02-24 04:13:56,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:56,263 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2021-02-24 04:13:56,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 04:13:56,263 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2021-02-24 04:13:56,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:56,265 INFO L225 Difference]: With dead ends: 47 [2021-02-24 04:13:56,265 INFO L226 Difference]: Without dead ends: 41 [2021-02-24 04:13:56,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-02-24 04:13:56,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-24 04:13:56,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-02-24 04:13:56,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-24 04:13:56,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-02-24 04:13:56,280 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 40 [2021-02-24 04:13:56,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:56,281 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-02-24 04:13:56,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 04:13:56,281 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-02-24 04:13:56,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-24 04:13:56,283 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:56,283 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:56,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:13:56,283 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:56,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:56,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1925368272, now seen corresponding path program 3 times [2021-02-24 04:13:56,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:56,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438653812] [2021-02-24 04:13:56,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:56,287 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:56,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:56,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:56,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:56,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:56,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:56,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:56,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:56,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:56,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-02-24 04:13:56,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438653812] [2021-02-24 04:13:56,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:56,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 04:13:56,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476082528] [2021-02-24 04:13:56,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 04:13:56,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:56,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 04:13:56,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:13:56,489 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 9 states. [2021-02-24 04:13:56,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:56,758 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-02-24 04:13:56,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 04:13:56,759 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2021-02-24 04:13:56,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:56,760 INFO L225 Difference]: With dead ends: 52 [2021-02-24 04:13:56,761 INFO L226 Difference]: Without dead ends: 46 [2021-02-24 04:13:56,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-02-24 04:13:56,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-02-24 04:13:56,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-02-24 04:13:56,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-02-24 04:13:56,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-02-24 04:13:56,775 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 48 [2021-02-24 04:13:56,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:56,775 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-02-24 04:13:56,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 04:13:56,776 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-02-24 04:13:56,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-24 04:13:56,778 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:56,778 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:56,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:13:56,778 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:56,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:56,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1702046426, now seen corresponding path program 4 times [2021-02-24 04:13:56,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:56,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075081973] [2021-02-24 04:13:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:56,782 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:56,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:56,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:56,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:56,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:56,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:56,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:56,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:56,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:56,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:56,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:56,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-02-24 04:13:56,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075081973] [2021-02-24 04:13:56,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:56,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 04:13:56,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502659465] [2021-02-24 04:13:56,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 04:13:56,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:56,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 04:13:56,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-02-24 04:13:56,989 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 10 states. [2021-02-24 04:13:57,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:57,324 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2021-02-24 04:13:57,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 04:13:57,325 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2021-02-24 04:13:57,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:57,326 INFO L225 Difference]: With dead ends: 57 [2021-02-24 04:13:57,326 INFO L226 Difference]: Without dead ends: 51 [2021-02-24 04:13:57,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-02-24 04:13:57,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-24 04:13:57,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-02-24 04:13:57,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-24 04:13:57,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-02-24 04:13:57,340 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 56 [2021-02-24 04:13:57,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:57,341 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-02-24 04:13:57,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 04:13:57,341 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-02-24 04:13:57,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-24 04:13:57,343 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:57,343 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:57,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 04:13:57,343 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:57,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:57,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1874632176, now seen corresponding path program 5 times [2021-02-24 04:13:57,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:57,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525649070] [2021-02-24 04:13:57,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:57,347 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:57,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:57,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:57,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:57,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:57,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:57,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:57,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:57,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:57,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:57,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:57,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:57,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:57,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:57,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:57,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:57,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:57,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:57,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:57,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:57,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:57,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:57,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:57,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:57,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:57,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:57,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:57,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:57,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:57,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:57,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:57,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:57,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:57,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:57,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:57,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:57,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:57,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:57,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:57,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-02-24 04:13:57,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525649070] [2021-02-24 04:13:57,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:57,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-24 04:13:57,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275495067] [2021-02-24 04:13:57,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 04:13:57,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:57,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 04:13:57,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:13:57,613 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 11 states. [2021-02-24 04:13:58,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:58,011 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2021-02-24 04:13:58,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 04:13:58,012 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2021-02-24 04:13:58,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:58,014 INFO L225 Difference]: With dead ends: 62 [2021-02-24 04:13:58,014 INFO L226 Difference]: Without dead ends: 56 [2021-02-24 04:13:58,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-02-24 04:13:58,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-02-24 04:13:58,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-02-24 04:13:58,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-24 04:13:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-02-24 04:13:58,030 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 64 [2021-02-24 04:13:58,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:58,030 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-02-24 04:13:58,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 04:13:58,030 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-02-24 04:13:58,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-24 04:13:58,032 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:58,032 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:58,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:13:58,032 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:58,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:58,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1809628826, now seen corresponding path program 6 times [2021-02-24 04:13:58,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:58,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290207751] [2021-02-24 04:13:58,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:58,036 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:58,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:58,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:58,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:58,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:58,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:58,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:58,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:58,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:58,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:58,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:58,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:58,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-02-24 04:13:58,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290207751] [2021-02-24 04:13:58,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:58,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-24 04:13:58,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002777672] [2021-02-24 04:13:58,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 04:13:58,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:58,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 04:13:58,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-02-24 04:13:58,329 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 12 states. [2021-02-24 04:13:58,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:58,784 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2021-02-24 04:13:58,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 04:13:58,784 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2021-02-24 04:13:58,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:58,786 INFO L225 Difference]: With dead ends: 67 [2021-02-24 04:13:58,786 INFO L226 Difference]: Without dead ends: 61 [2021-02-24 04:13:58,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2021-02-24 04:13:58,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-24 04:13:58,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-24 04:13:58,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-24 04:13:58,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-02-24 04:13:58,802 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 72 [2021-02-24 04:13:58,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:58,802 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-02-24 04:13:58,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 04:13:58,803 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-02-24 04:13:58,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-02-24 04:13:58,804 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:58,804 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:58,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 04:13:58,805 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:58,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:58,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1448159824, now seen corresponding path program 7 times [2021-02-24 04:13:58,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:58,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865464392] [2021-02-24 04:13:58,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:58,808 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:58,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:58,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:58,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:58,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:58,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:58,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:58,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:58,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:58,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:58,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:58,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:59,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:59,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:59,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:59,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,150 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-02-24 04:13:59,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865464392] [2021-02-24 04:13:59,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:13:59,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-24 04:13:59,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596028804] [2021-02-24 04:13:59,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 04:13:59,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:13:59,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 04:13:59,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-02-24 04:13:59,154 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 13 states. [2021-02-24 04:13:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:13:59,673 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2021-02-24 04:13:59,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 04:13:59,674 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2021-02-24 04:13:59,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:13:59,675 INFO L225 Difference]: With dead ends: 72 [2021-02-24 04:13:59,675 INFO L226 Difference]: Without dead ends: 66 [2021-02-24 04:13:59,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-02-24 04:13:59,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-02-24 04:13:59,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-02-24 04:13:59,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-24 04:13:59,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2021-02-24 04:13:59,693 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 80 [2021-02-24 04:13:59,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:13:59,693 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2021-02-24 04:13:59,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 04:13:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2021-02-24 04:13:59,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-24 04:13:59,695 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:13:59,695 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:13:59,695 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 04:13:59,695 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:13:59,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:13:59,696 INFO L82 PathProgramCache]: Analyzing trace with hash -537976230, now seen corresponding path program 8 times [2021-02-24 04:13:59,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:13:59,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605659447] [2021-02-24 04:13:59,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:13:59,699 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:13:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:59,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:59,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:59,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:13:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:59,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:13:59,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:13:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:59,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:59,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:59,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:59,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:59,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:59,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:59,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:13:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:13:59,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:13:59,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:13:59,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:00,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-02-24 04:14:00,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605659447] [2021-02-24 04:14:00,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:14:00,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-24 04:14:00,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127300663] [2021-02-24 04:14:00,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-24 04:14:00,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:14:00,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-24 04:14:00,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:14:00,065 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 14 states. [2021-02-24 04:14:00,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:14:00,607 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2021-02-24 04:14:00,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-24 04:14:00,607 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 88 [2021-02-24 04:14:00,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:14:00,609 INFO L225 Difference]: With dead ends: 77 [2021-02-24 04:14:00,609 INFO L226 Difference]: Without dead ends: 71 [2021-02-24 04:14:00,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2021-02-24 04:14:00,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-02-24 04:14:00,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-02-24 04:14:00,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-02-24 04:14:00,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2021-02-24 04:14:00,627 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 88 [2021-02-24 04:14:00,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:14:00,628 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2021-02-24 04:14:00,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-24 04:14:00,628 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2021-02-24 04:14:00,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-02-24 04:14:00,630 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:14:00,630 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:14:00,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 04:14:00,630 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:14:00,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:14:00,631 INFO L82 PathProgramCache]: Analyzing trace with hash -852483440, now seen corresponding path program 9 times [2021-02-24 04:14:00,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:14:00,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397894809] [2021-02-24 04:14:00,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:14:00,634 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:14:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:00,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:00,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:00,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:14:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:00,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:00,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:14:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:00,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:00,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:00,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:00,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:00,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:00,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:00,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:00,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:00,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:00,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:00,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:00,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:01,058 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-02-24 04:14:01,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397894809] [2021-02-24 04:14:01,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:14:01,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-24 04:14:01,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920171718] [2021-02-24 04:14:01,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-24 04:14:01,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:14:01,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-24 04:14:01,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-02-24 04:14:01,061 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 15 states. [2021-02-24 04:14:01,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:14:01,693 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2021-02-24 04:14:01,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 04:14:01,693 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 96 [2021-02-24 04:14:01,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:14:01,695 INFO L225 Difference]: With dead ends: 82 [2021-02-24 04:14:01,695 INFO L226 Difference]: Without dead ends: 76 [2021-02-24 04:14:01,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=472, Unknown=0, NotChecked=0, Total=702 [2021-02-24 04:14:01,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-24 04:14:01,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-02-24 04:14:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-24 04:14:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2021-02-24 04:14:01,714 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 96 [2021-02-24 04:14:01,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:14:01,715 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2021-02-24 04:14:01,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-24 04:14:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2021-02-24 04:14:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-02-24 04:14:01,716 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:14:01,717 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:14:01,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 04:14:01,717 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:14:01,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:14:01,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1407604250, now seen corresponding path program 10 times [2021-02-24 04:14:01,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:14:01,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440294357] [2021-02-24 04:14:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:14:01,720 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:14:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:01,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:01,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:01,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:01,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:01,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:01,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:01,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:14:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:01,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:01,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:01,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:14:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:01,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:01,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:01,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:01,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:01,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:01,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:01,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:01,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:01,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:01,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:01,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:01,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:01,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:01,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:01,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:01,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:01,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:01,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:01,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:01,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:01,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:01,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:01,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:01,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:01,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:01,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:01,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:01,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:01,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:02,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:02,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:02,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:02,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:02,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:02,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:02,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:02,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:02,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:02,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:02,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:02,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:02,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:02,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:02,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:02,184 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-02-24 04:14:02,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440294357] [2021-02-24 04:14:02,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:14:02,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-24 04:14:02,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402325418] [2021-02-24 04:14:02,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-24 04:14:02,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:14:02,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-24 04:14:02,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-02-24 04:14:02,187 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 16 states. [2021-02-24 04:14:02,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:14:02,816 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2021-02-24 04:14:02,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 04:14:02,817 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2021-02-24 04:14:02,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:14:02,818 INFO L225 Difference]: With dead ends: 87 [2021-02-24 04:14:02,818 INFO L226 Difference]: Without dead ends: 81 [2021-02-24 04:14:02,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=268, Invalid=544, Unknown=0, NotChecked=0, Total=812 [2021-02-24 04:14:02,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-24 04:14:02,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-02-24 04:14:02,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-24 04:14:02,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2021-02-24 04:14:02,836 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 104 [2021-02-24 04:14:02,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:14:02,837 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2021-02-24 04:14:02,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-24 04:14:02,837 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2021-02-24 04:14:02,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-02-24 04:14:02,838 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:14:02,838 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:14:02,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-24 04:14:02,839 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:14:02,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:14:02,839 INFO L82 PathProgramCache]: Analyzing trace with hash 2015644368, now seen corresponding path program 11 times [2021-02-24 04:14:02,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:14:02,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695599202] [2021-02-24 04:14:02,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:14:02,842 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:14:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:02,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:02,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:02,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:02,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:14:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:02,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:02,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:14:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:02,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:02,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:02,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:02,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:02,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:02,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:02,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:02,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:02,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:03,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:03,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:03,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:03,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:03,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:03,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:03,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:03,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:03,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:03,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-02-24 04:14:03,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695599202] [2021-02-24 04:14:03,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:14:03,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-24 04:14:03,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589519731] [2021-02-24 04:14:03,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-24 04:14:03,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:14:03,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-24 04:14:03,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2021-02-24 04:14:03,412 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 17 states. [2021-02-24 04:14:04,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:14:04,093 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2021-02-24 04:14:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-24 04:14:04,093 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 112 [2021-02-24 04:14:04,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:14:04,095 INFO L225 Difference]: With dead ends: 92 [2021-02-24 04:14:04,095 INFO L226 Difference]: Without dead ends: 86 [2021-02-24 04:14:04,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=309, Invalid=621, Unknown=0, NotChecked=0, Total=930 [2021-02-24 04:14:04,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-24 04:14:04,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-02-24 04:14:04,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-24 04:14:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2021-02-24 04:14:04,112 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 112 [2021-02-24 04:14:04,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:14:04,112 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2021-02-24 04:14:04,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-24 04:14:04,112 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2021-02-24 04:14:04,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-02-24 04:14:04,114 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:14:04,114 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:14:04,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-24 04:14:04,114 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:14:04,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:14:04,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1090627110, now seen corresponding path program 12 times [2021-02-24 04:14:04,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:14:04,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266748821] [2021-02-24 04:14:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:14:04,117 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:14:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:04,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:04,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:04,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:14:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:04,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:04,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:14:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:04,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:04,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:04,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:04,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:04,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:04,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:04,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:04,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:04,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:04,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:04,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:04,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:04,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:04,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-02-24 04:14:04,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266748821] [2021-02-24 04:14:04,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:14:04,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-24 04:14:04,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344004519] [2021-02-24 04:14:04,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-24 04:14:04,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:14:04,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-24 04:14:04,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2021-02-24 04:14:04,827 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 18 states. [2021-02-24 04:14:05,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:14:05,579 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2021-02-24 04:14:05,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 04:14:05,580 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 120 [2021-02-24 04:14:05,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:14:05,582 INFO L225 Difference]: With dead ends: 97 [2021-02-24 04:14:05,582 INFO L226 Difference]: Without dead ends: 91 [2021-02-24 04:14:05,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=353, Invalid=703, Unknown=0, NotChecked=0, Total=1056 [2021-02-24 04:14:05,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-24 04:14:05,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-02-24 04:14:05,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-02-24 04:14:05,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2021-02-24 04:14:05,598 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 120 [2021-02-24 04:14:05,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:14:05,598 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2021-02-24 04:14:05,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-24 04:14:05,598 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2021-02-24 04:14:05,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-02-24 04:14:05,600 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:14:05,600 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:14:05,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-24 04:14:05,600 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:14:05,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:14:05,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1787714800, now seen corresponding path program 13 times [2021-02-24 04:14:05,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:14:05,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613867612] [2021-02-24 04:14:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:14:05,603 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:14:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:05,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:05,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:05,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:14:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:05,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:05,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:14:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:05,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:05,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:05,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:05,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:05,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:05,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:05,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:05,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:05,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:05,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:05,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:06,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:06,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:06,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:06,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:06,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:06,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:06,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:06,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:06,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:06,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:06,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:06,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:06,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:06,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:06,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:06,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:06,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:06,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:06,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:06,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:06,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:06,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:06,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:06,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:06,250 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-02-24 04:14:06,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613867612] [2021-02-24 04:14:06,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:14:06,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-24 04:14:06,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271783252] [2021-02-24 04:14:06,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-24 04:14:06,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:14:06,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-24 04:14:06,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2021-02-24 04:14:06,253 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 19 states. [2021-02-24 04:14:07,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:14:07,027 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2021-02-24 04:14:07,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 04:14:07,028 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 128 [2021-02-24 04:14:07,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:14:07,029 INFO L225 Difference]: With dead ends: 102 [2021-02-24 04:14:07,029 INFO L226 Difference]: Without dead ends: 96 [2021-02-24 04:14:07,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=400, Invalid=790, Unknown=0, NotChecked=0, Total=1190 [2021-02-24 04:14:07,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-02-24 04:14:07,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-02-24 04:14:07,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-02-24 04:14:07,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2021-02-24 04:14:07,045 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 128 [2021-02-24 04:14:07,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:14:07,046 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2021-02-24 04:14:07,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-24 04:14:07,046 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2021-02-24 04:14:07,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-02-24 04:14:07,047 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:14:07,048 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:14:07,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-24 04:14:07,048 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:14:07,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:14:07,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1030958490, now seen corresponding path program 14 times [2021-02-24 04:14:07,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:14:07,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034630507] [2021-02-24 04:14:07,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:14:07,051 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:14:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:07,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:07,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:07,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:14:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:07,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:07,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:14:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:07,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:07,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:07,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:07,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:07,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:07,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:07,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:07,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:07,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:07,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:07,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:07,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:07,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:07,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:07,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:07,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:07,718 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-02-24 04:14:07,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034630507] [2021-02-24 04:14:07,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:14:07,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-24 04:14:07,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194196410] [2021-02-24 04:14:07,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-24 04:14:07,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:14:07,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-24 04:14:07,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=238, Unknown=0, NotChecked=0, Total=380 [2021-02-24 04:14:07,721 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand 20 states. [2021-02-24 04:14:08,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:14:08,566 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2021-02-24 04:14:08,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-24 04:14:08,567 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 136 [2021-02-24 04:14:08,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:14:08,569 INFO L225 Difference]: With dead ends: 107 [2021-02-24 04:14:08,569 INFO L226 Difference]: Without dead ends: 101 [2021-02-24 04:14:08,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=450, Invalid=882, Unknown=0, NotChecked=0, Total=1332 [2021-02-24 04:14:08,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-02-24 04:14:08,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-02-24 04:14:08,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-02-24 04:14:08,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2021-02-24 04:14:08,590 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 136 [2021-02-24 04:14:08,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:14:08,592 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2021-02-24 04:14:08,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-24 04:14:08,592 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2021-02-24 04:14:08,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-02-24 04:14:08,594 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:14:08,594 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:14:08,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-24 04:14:08,595 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:14:08,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:14:08,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1583098704, now seen corresponding path program 15 times [2021-02-24 04:14:08,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:14:08,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491312288] [2021-02-24 04:14:08,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:14:08,598 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:14:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:08,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:08,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:08,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:08,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:08,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:08,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:08,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:14:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:08,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:08,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:08,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:14:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:08,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:08,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:08,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:08,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:08,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:08,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:08,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:08,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:08,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:08,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:08,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:08,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:08,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:08,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:08,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:08,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:08,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:08,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:08,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:08,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:08,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:08,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:08,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:08,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:08,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:08,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:08,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:08,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:08,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:08,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:09,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:09,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:09,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:09,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:09,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:09,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:09,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:09,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:09,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:09,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:09,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-02-24 04:14:09,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491312288] [2021-02-24 04:14:09,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:14:09,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-02-24 04:14:09,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494073108] [2021-02-24 04:14:09,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-24 04:14:09,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:14:09,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-24 04:14:09,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2021-02-24 04:14:09,430 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 21 states. [2021-02-24 04:14:10,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:14:10,387 INFO L93 Difference]: Finished difference Result 112 states and 113 transitions. [2021-02-24 04:14:10,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-24 04:14:10,387 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 144 [2021-02-24 04:14:10,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:14:10,391 INFO L225 Difference]: With dead ends: 112 [2021-02-24 04:14:10,391 INFO L226 Difference]: Without dead ends: 106 [2021-02-24 04:14:10,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=503, Invalid=979, Unknown=0, NotChecked=0, Total=1482 [2021-02-24 04:14:10,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-24 04:14:10,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-02-24 04:14:10,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-02-24 04:14:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2021-02-24 04:14:10,411 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 144 [2021-02-24 04:14:10,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:14:10,414 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2021-02-24 04:14:10,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-24 04:14:10,414 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2021-02-24 04:14:10,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-02-24 04:14:10,416 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:14:10,416 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:14:10,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-24 04:14:10,416 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:14:10,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:14:10,417 INFO L82 PathProgramCache]: Analyzing trace with hash -796864166, now seen corresponding path program 16 times [2021-02-24 04:14:10,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:14:10,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305329358] [2021-02-24 04:14:10,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:14:10,420 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:14:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:10,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:10,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:10,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:14:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:10,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:10,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:14:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:10,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:10,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:10,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:10,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:10,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:10,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:10,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:10,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:10,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:10,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:10,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:10,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:10,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:10,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:10,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:10,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:11,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:11,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:11,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:11,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:11,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:11,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:11,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:11,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:11,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:11,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:11,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:11,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:11,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:11,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-02-24 04:14:11,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305329358] [2021-02-24 04:14:11,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:14:11,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-24 04:14:11,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658239344] [2021-02-24 04:14:11,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-24 04:14:11,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:14:11,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-24 04:14:11,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2021-02-24 04:14:11,213 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 22 states. [2021-02-24 04:14:12,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:14:12,281 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2021-02-24 04:14:12,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-24 04:14:12,282 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 152 [2021-02-24 04:14:12,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:14:12,284 INFO L225 Difference]: With dead ends: 117 [2021-02-24 04:14:12,284 INFO L226 Difference]: Without dead ends: 111 [2021-02-24 04:14:12,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=559, Invalid=1081, Unknown=0, NotChecked=0, Total=1640 [2021-02-24 04:14:12,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-02-24 04:14:12,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-02-24 04:14:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-02-24 04:14:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2021-02-24 04:14:12,305 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 152 [2021-02-24 04:14:12,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:14:12,305 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2021-02-24 04:14:12,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-24 04:14:12,305 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2021-02-24 04:14:12,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-02-24 04:14:12,307 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:14:12,307 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:14:12,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-24 04:14:12,308 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:14:12,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:14:12,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1193796496, now seen corresponding path program 17 times [2021-02-24 04:14:12,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:14:12,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104569523] [2021-02-24 04:14:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:14:12,311 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:14:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:12,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:12,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:12,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:14:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:12,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:12,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:14:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:12,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:12,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:12,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:12,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:12,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:12,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:12,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:12,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:12,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:12,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:12,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:12,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:12,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:12,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:12,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:12,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:12,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:13,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:13,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:13,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:13,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:13,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:13,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:13,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:13,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:13,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:13,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:13,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:13,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:13,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:13,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:13,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:13,294 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-02-24 04:14:13,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104569523] [2021-02-24 04:14:13,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:14:13,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-02-24 04:14:13,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215016057] [2021-02-24 04:14:13,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-24 04:14:13,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:14:13,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-24 04:14:13,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=310, Unknown=0, NotChecked=0, Total=506 [2021-02-24 04:14:13,298 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 23 states. [2021-02-24 04:14:14,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:14:14,408 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2021-02-24 04:14:14,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-24 04:14:14,412 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 160 [2021-02-24 04:14:14,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:14:14,423 INFO L225 Difference]: With dead ends: 122 [2021-02-24 04:14:14,423 INFO L226 Difference]: Without dead ends: 116 [2021-02-24 04:14:14,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=618, Invalid=1188, Unknown=0, NotChecked=0, Total=1806 [2021-02-24 04:14:14,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-02-24 04:14:14,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-02-24 04:14:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-02-24 04:14:14,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2021-02-24 04:14:14,437 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 160 [2021-02-24 04:14:14,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:14:14,438 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2021-02-24 04:14:14,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-24 04:14:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2021-02-24 04:14:14,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-24 04:14:14,440 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:14:14,440 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:14:14,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-24 04:14:14,440 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:14:14,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:14:14,441 INFO L82 PathProgramCache]: Analyzing trace with hash 509822234, now seen corresponding path program 18 times [2021-02-24 04:14:14,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:14:14,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360201161] [2021-02-24 04:14:14,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:14:14,443 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:14:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:14,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:14,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:14,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:14:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:14,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:14,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:14:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:14,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:14,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:14,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:14,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:14,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:14,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:14,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:14,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:14,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:14,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:14,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:14,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:14,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:15,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:15,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:15,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:15,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:15,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:15,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:15,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:15,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:15,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:15,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:15,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:15,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:15,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:15,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:15,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:15,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:15,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:15,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:15,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:15,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:15,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:15,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:15,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:15,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:15,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:15,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:15,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:15,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:15,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:15,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:15,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:15,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:15,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:15,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:15,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:15,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:15,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:15,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:15,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-02-24 04:14:15,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360201161] [2021-02-24 04:14:15,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:14:15,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-24 04:14:15,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753644575] [2021-02-24 04:14:15,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-24 04:14:15,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:14:15,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-24 04:14:15,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=336, Unknown=0, NotChecked=0, Total=552 [2021-02-24 04:14:15,535 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand 24 states. [2021-02-24 04:14:16,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:14:16,685 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2021-02-24 04:14:16,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-24 04:14:16,686 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 168 [2021-02-24 04:14:16,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:14:16,687 INFO L225 Difference]: With dead ends: 127 [2021-02-24 04:14:16,688 INFO L226 Difference]: Without dead ends: 121 [2021-02-24 04:14:16,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=680, Invalid=1300, Unknown=0, NotChecked=0, Total=1980 [2021-02-24 04:14:16,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-02-24 04:14:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-02-24 04:14:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2021-02-24 04:14:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2021-02-24 04:14:16,702 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 168 [2021-02-24 04:14:16,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:14:16,702 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2021-02-24 04:14:16,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-24 04:14:16,703 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2021-02-24 04:14:16,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-24 04:14:16,705 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:14:16,705 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:14:16,705 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-24 04:14:16,705 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:14:16,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:14:16,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1058589648, now seen corresponding path program 19 times [2021-02-24 04:14:16,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:14:16,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404190200] [2021-02-24 04:14:16,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:14:16,708 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:14:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:16,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:16,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:16,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:16,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:16,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:16,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:16,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:14:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:16,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:16,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:16,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:14:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:16,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:16,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:16,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:16,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:16,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:16,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:16,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:16,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:16,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:16,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:16,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:16,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:16,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:16,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:16,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:16,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:16,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:16,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:16,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:16,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:16,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:16,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:16,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:16,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:17,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:17,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:17,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:17,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:17,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:17,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:17,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:17,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:17,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:17,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:17,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:17,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:17,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:17,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:17,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:17,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2021-02-24 04:14:17,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404190200] [2021-02-24 04:14:17,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:14:17,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-02-24 04:14:17,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925553267] [2021-02-24 04:14:17,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-24 04:14:17,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:14:17,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-24 04:14:17,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=363, Unknown=0, NotChecked=0, Total=600 [2021-02-24 04:14:17,789 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 25 states. [2021-02-24 04:14:19,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:14:19,045 INFO L93 Difference]: Finished difference Result 132 states and 133 transitions. [2021-02-24 04:14:19,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-24 04:14:19,046 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 176 [2021-02-24 04:14:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:14:19,047 INFO L225 Difference]: With dead ends: 132 [2021-02-24 04:14:19,048 INFO L226 Difference]: Without dead ends: 126 [2021-02-24 04:14:19,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=745, Invalid=1417, Unknown=0, NotChecked=0, Total=2162 [2021-02-24 04:14:19,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-02-24 04:14:19,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-02-24 04:14:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2021-02-24 04:14:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2021-02-24 04:14:19,065 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 176 [2021-02-24 04:14:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:14:19,066 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2021-02-24 04:14:19,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-24 04:14:19,066 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2021-02-24 04:14:19,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-02-24 04:14:19,067 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:14:19,068 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:14:19,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-24 04:14:19,068 INFO L428 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:14:19,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:14:19,069 INFO L82 PathProgramCache]: Analyzing trace with hash 844531930, now seen corresponding path program 20 times [2021-02-24 04:14:19,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:14:19,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352307892] [2021-02-24 04:14:19,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:14:19,071 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:14:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:19,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:19,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:14:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:19,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:14:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:19,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:19,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:19,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:20,168 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2021-02-24 04:14:20,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352307892] [2021-02-24 04:14:20,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:14:20,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-02-24 04:14:20,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582779986] [2021-02-24 04:14:20,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-24 04:14:20,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:14:20,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-24 04:14:20,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=391, Unknown=0, NotChecked=0, Total=650 [2021-02-24 04:14:20,172 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 26 states. [2021-02-24 04:14:21,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:14:21,558 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2021-02-24 04:14:21,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-24 04:14:21,559 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 184 [2021-02-24 04:14:21,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:14:21,560 INFO L225 Difference]: With dead ends: 137 [2021-02-24 04:14:21,560 INFO L226 Difference]: Without dead ends: 131 [2021-02-24 04:14:21,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=813, Invalid=1539, Unknown=0, NotChecked=0, Total=2352 [2021-02-24 04:14:21,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-02-24 04:14:21,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-02-24 04:14:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2021-02-24 04:14:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2021-02-24 04:14:21,578 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 184 [2021-02-24 04:14:21,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:14:21,578 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2021-02-24 04:14:21,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-24 04:14:21,579 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2021-02-24 04:14:21,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-02-24 04:14:21,580 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:14:21,580 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:14:21,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-02-24 04:14:21,581 INFO L428 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:14:21,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:14:21,581 INFO L82 PathProgramCache]: Analyzing trace with hash -260905968, now seen corresponding path program 21 times [2021-02-24 04:14:21,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:14:21,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464943173] [2021-02-24 04:14:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:14:21,584 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:14:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:21,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:21,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:21,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:21,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:14:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:21,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:21,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:14:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:21,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:21,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:21,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:21,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:21,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:21,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:21,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:21,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:21,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:21,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:21,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:21,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:21,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:21,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:21,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:21,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:21,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:21,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:21,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:21,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:21,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:21,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:22,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:22,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:22,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:22,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:22,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:22,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:22,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:22,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:22,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:22,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:22,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:22,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:22,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:22,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:22,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:22,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:22,710 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2021-02-24 04:14:22,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464943173] [2021-02-24 04:14:22,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:14:22,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-02-24 04:14:22,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381236859] [2021-02-24 04:14:22,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-24 04:14:22,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:14:22,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-24 04:14:22,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=420, Unknown=0, NotChecked=0, Total=702 [2021-02-24 04:14:22,712 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 27 states. [2021-02-24 04:14:24,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:14:24,117 INFO L93 Difference]: Finished difference Result 142 states and 143 transitions. [2021-02-24 04:14:24,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-24 04:14:24,118 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 192 [2021-02-24 04:14:24,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:14:24,120 INFO L225 Difference]: With dead ends: 142 [2021-02-24 04:14:24,120 INFO L226 Difference]: Without dead ends: 136 [2021-02-24 04:14:24,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=884, Invalid=1666, Unknown=0, NotChecked=0, Total=2550 [2021-02-24 04:14:24,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-02-24 04:14:24,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-02-24 04:14:24,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2021-02-24 04:14:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2021-02-24 04:14:24,142 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 192 [2021-02-24 04:14:24,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:14:24,142 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2021-02-24 04:14:24,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-02-24 04:14:24,143 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2021-02-24 04:14:24,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-24 04:14:24,144 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:14:24,144 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:14:24,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-02-24 04:14:24,145 INFO L428 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:14:24,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:14:24,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1016503450, now seen corresponding path program 22 times [2021-02-24 04:14:24,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:14:24,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117975492] [2021-02-24 04:14:24,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:14:24,148 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:14:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:24,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:24,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:14:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:24,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:14:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:24,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:24,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:24,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:25,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:25,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:25,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:25,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:25,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:25,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:25,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:25,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:25,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:25,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:25,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:25,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:25,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:25,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:25,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:25,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:25,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:25,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:25,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:25,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:25,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:25,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:25,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:25,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:25,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2021-02-24 04:14:25,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117975492] [2021-02-24 04:14:25,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:14:25,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-02-24 04:14:25,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188580415] [2021-02-24 04:14:25,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-24 04:14:25,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:14:25,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-24 04:14:25,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=450, Unknown=0, NotChecked=0, Total=756 [2021-02-24 04:14:25,514 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand 28 states. [2021-02-24 04:14:27,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:14:27,015 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2021-02-24 04:14:27,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-24 04:14:27,016 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 200 [2021-02-24 04:14:27,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:14:27,018 INFO L225 Difference]: With dead ends: 147 [2021-02-24 04:14:27,018 INFO L226 Difference]: Without dead ends: 141 [2021-02-24 04:14:27,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=958, Invalid=1798, Unknown=0, NotChecked=0, Total=2756 [2021-02-24 04:14:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-02-24 04:14:27,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-02-24 04:14:27,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-02-24 04:14:27,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2021-02-24 04:14:27,045 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 200 [2021-02-24 04:14:27,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:14:27,045 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2021-02-24 04:14:27,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-02-24 04:14:27,045 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2021-02-24 04:14:27,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-02-24 04:14:27,047 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:14:27,047 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:14:27,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-02-24 04:14:27,048 INFO L428 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:14:27,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:14:27,048 INFO L82 PathProgramCache]: Analyzing trace with hash 8006736, now seen corresponding path program 23 times [2021-02-24 04:14:27,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:14:27,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538981681] [2021-02-24 04:14:27,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:14:27,051 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:14:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:27,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:27,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:14:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:27,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:14:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:27,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:27,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:27,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:28,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:28,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:28,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:28,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:28,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:28,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:28,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:28,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:28,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:28,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:28,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:28,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:28,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:28,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:28,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:28,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:28,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:28,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:28,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:28,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:28,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:28,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:28,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:28,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:28,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:28,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:28,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:28,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:28,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:28,474 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2021-02-24 04:14:28,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538981681] [2021-02-24 04:14:28,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:14:28,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-02-24 04:14:28,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831557533] [2021-02-24 04:14:28,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-02-24 04:14:28,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:14:28,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-02-24 04:14:28,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=481, Unknown=0, NotChecked=0, Total=812 [2021-02-24 04:14:28,476 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 29 states. [2021-02-24 04:14:30,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:14:30,039 INFO L93 Difference]: Finished difference Result 152 states and 153 transitions. [2021-02-24 04:14:30,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-24 04:14:30,040 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 208 [2021-02-24 04:14:30,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:14:30,042 INFO L225 Difference]: With dead ends: 152 [2021-02-24 04:14:30,042 INFO L226 Difference]: Without dead ends: 146 [2021-02-24 04:14:30,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1035, Invalid=1935, Unknown=0, NotChecked=0, Total=2970 [2021-02-24 04:14:30,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-02-24 04:14:30,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-02-24 04:14:30,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-02-24 04:14:30,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2021-02-24 04:14:30,063 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 208 [2021-02-24 04:14:30,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:14:30,064 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2021-02-24 04:14:30,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-02-24 04:14:30,064 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2021-02-24 04:14:30,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-02-24 04:14:30,065 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:14:30,065 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:14:30,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-02-24 04:14:30,066 INFO L428 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:14:30,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:14:30,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1381990490, now seen corresponding path program 24 times [2021-02-24 04:14:30,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:14:30,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237297123] [2021-02-24 04:14:30,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:14:30,069 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:14:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:30,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:30,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:14:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:14:30,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:14:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:30,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:30,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:30,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:31,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:31,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:31,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:31,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:31,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:31,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:31,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:31,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:31,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:31,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:31,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:31,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:31,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:31,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:31,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:31,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:31,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:31,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:31,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:31,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:31,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:31,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:31,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:31,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:31,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:31,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:14:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:14:31,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:31,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:31,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:14:31,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:14:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2021-02-24 04:14:31,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237297123] [2021-02-24 04:14:31,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:14:31,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-02-24 04:14:31,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697268594] [2021-02-24 04:14:31,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-02-24 04:14:31,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:14:31,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-02-24 04:14:31,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=513, Unknown=0, NotChecked=0, Total=870 [2021-02-24 04:14:31,622 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand 30 states. [2021-02-24 04:14:33,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:14:33,282 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2021-02-24 04:14:33,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-24 04:14:33,283 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 216 [2021-02-24 04:14:33,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:14:33,288 INFO L225 Difference]: With dead ends: 157 [2021-02-24 04:14:33,288 INFO L226 Difference]: Without dead ends: 151 [2021-02-24 04:14:33,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1115, Invalid=2077, Unknown=0, NotChecked=0, Total=3192 [2021-02-24 04:14:33,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-02-24 04:14:33,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-02-24 04:14:33,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2021-02-24 04:14:33,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2021-02-24 04:14:33,313 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 216 [2021-02-24 04:14:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:14:33,315 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2021-02-24 04:14:33,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-02-24 04:14:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2021-02-24 04:14:33,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-02-24 04:14:33,318 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:14:33,318 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:14:33,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-02-24 04:14:33,318 INFO L428 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:14:33,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:14:33,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1332913296, now seen corresponding path program 25 times [2021-02-24 04:14:33,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:14:33,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745334885] [2021-02-24 04:14:33,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:14:33,323 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:14:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:14:33,379 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:14:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:14:33,455 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:14:33,564 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:14:33,564 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:14:33,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-02-24 04:14:33,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:14:33 BoogieIcfgContainer [2021-02-24 04:14:33,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:14:33,615 INFO L168 Benchmark]: Toolchain (without parser) took 40153.51 ms. Allocated memory was 158.3 MB in the beginning and 692.1 MB in the end (delta: 533.7 MB). Free memory was 133.9 MB in the beginning and 625.5 MB in the end (delta: -491.6 MB). Peak memory consumption was 42.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:14:33,615 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 158.3 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:14:33,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.80 ms. Allocated memory is still 158.3 MB. Free memory was 132.7 MB in the beginning and 123.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:14:33,616 INFO L168 Benchmark]: Boogie Preprocessor took 29.11 ms. Allocated memory is still 158.3 MB. Free memory was 123.7 MB in the beginning and 122.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:14:33,616 INFO L168 Benchmark]: RCFGBuilder took 330.56 ms. Allocated memory is still 158.3 MB. Free memory was 122.2 MB in the beginning and 109.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:14:33,616 INFO L168 Benchmark]: TraceAbstraction took 39541.33 ms. Allocated memory was 158.3 MB in the beginning and 692.1 MB in the end (delta: 533.7 MB). Free memory was 108.5 MB in the beginning and 625.5 MB in the end (delta: -517.0 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:14:33,617 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 158.3 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 233.80 ms. Allocated memory is still 158.3 MB. Free memory was 132.7 MB in the beginning and 123.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.11 ms. Allocated memory is still 158.3 MB. Free memory was 123.7 MB in the beginning and 122.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 330.56 ms. Allocated memory is still 158.3 MB. Free memory was 122.2 MB in the beginning and 109.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 39541.33 ms. Allocated memory was 158.3 MB in the beginning and 692.1 MB in the end (delta: 533.7 MB). Free memory was 108.5 MB in the beginning and 625.5 MB in the end (delta: -517.0 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int input = 25; [L13] CALL, EXPR id(input) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND TRUE x==0 [L7] return 0; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L13] RET, EXPR id(input) [L13] int result = id(input); [L14] COND TRUE result == 25 [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 39.4s, OverallIterations: 26, TraceHistogramMax: 26, AutomataDifference: 20.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 653 SDtfs, 3152 SDslu, 1480 SDs, 0 SdLazy, 3099 SolverSat, 898 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1477 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 776 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5853 ImplicationChecksByTransitivity, 19.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 25 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 proved your program to be incorrect! Received shutdown request...