/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/eureka_05.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 06:39:48,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 06:39:48,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 06:39:48,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 06:39:48,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 06:39:48,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 06:39:48,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 06:39:48,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 06:39:48,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 06:39:48,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 06:39:48,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 06:39:48,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 06:39:48,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 06:39:48,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 06:39:48,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 06:39:48,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 06:39:48,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 06:39:48,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 06:39:48,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 06:39:48,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 06:39:48,715 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 06:39:48,722 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 06:39:48,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 06:39:48,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 06:39:48,723 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 06:39:48,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 06:39:48,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 06:39:48,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 06:39:48,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 06:39:48,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 06:39:48,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 06:39:48,724 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 06:39:48,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 06:39:48,725 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 06:39:48,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 06:39:48,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 06:39:48,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 06:39:48,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 06:39:48,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 06:39:48,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 06:39:48,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 06:39:48,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 06:39:48,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 06:39:48,726 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 06:39:48,726 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 06:39:48,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 06:39:48,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 06:39:49,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 06:39:49,001 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 06:39:49,001 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 06:39:49,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_05.i [2021-05-01 06:39:49,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e9d374f/66a7b28ed0584f159f99007898a7a0f5/FLAGdb5577ce7 [2021-05-01 06:39:49,406 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 06:39:49,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_05.i [2021-05-01 06:39:49,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e9d374f/66a7b28ed0584f159f99007898a7a0f5/FLAGdb5577ce7 [2021-05-01 06:39:49,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e9d374f/66a7b28ed0584f159f99007898a7a0f5 [2021-05-01 06:39:49,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 06:39:49,428 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 06:39:49,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 06:39:49,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 06:39:49,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 06:39:49,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 06:39:49" (1/1) ... [2021-05-01 06:39:49,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457fbeae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:49, skipping insertion in model container [2021-05-01 06:39:49,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 06:39:49" (1/1) ... [2021-05-01 06:39:49,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 06:39:49,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 06:39:49,572 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_05.i[810,823] [2021-05-01 06:39:49,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 06:39:49,594 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 06:39:49,609 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_05.i[810,823] [2021-05-01 06:39:49,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 06:39:49,647 INFO L208 MainTranslator]: Completed translation [2021-05-01 06:39:49,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:49 WrapperNode [2021-05-01 06:39:49,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 06:39:49,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 06:39:49,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 06:39:49,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 06:39:49,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:49" (1/1) ... [2021-05-01 06:39:49,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:49" (1/1) ... [2021-05-01 06:39:49,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:49" (1/1) ... [2021-05-01 06:39:49,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:49" (1/1) ... [2021-05-01 06:39:49,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:49" (1/1) ... [2021-05-01 06:39:49,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:49" (1/1) ... [2021-05-01 06:39:49,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:49" (1/1) ... [2021-05-01 06:39:49,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 06:39:49,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 06:39:49,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 06:39:49,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 06:39:49,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 06:39:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 06:39:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 06:39:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 06:39:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 06:39:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure SelectionSort [2021-05-01 06:39:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 06:39:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 06:39:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 06:39:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-01 06:39:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-01 06:39:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 06:39:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 06:39:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 06:39:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure SelectionSort [2021-05-01 06:39:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 06:39:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 06:39:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 06:39:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 06:39:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 06:39:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 06:39:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 06:39:50,031 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 06:39:50,032 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-05-01 06:39:50,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 06:39:50 BoogieIcfgContainer [2021-05-01 06:39:50,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 06:39:50,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 06:39:50,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 06:39:50,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 06:39:50,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 06:39:49" (1/3) ... [2021-05-01 06:39:50,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff41fb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 06:39:50, skipping insertion in model container [2021-05-01 06:39:50,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:49" (2/3) ... [2021-05-01 06:39:50,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff41fb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 06:39:50, skipping insertion in model container [2021-05-01 06:39:50,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 06:39:50" (3/3) ... [2021-05-01 06:39:50,038 INFO L111 eAbstractionObserver]: Analyzing ICFG eureka_05.i [2021-05-01 06:39:50,042 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 06:39:50,044 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 06:39:50,057 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 06:39:50,070 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 06:39:50,070 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 06:39:50,070 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 06:39:50,070 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 06:39:50,070 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 06:39:50,070 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 06:39:50,070 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 06:39:50,070 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 06:39:50,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 06:39:50,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-01 06:39:50,088 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:50,088 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:50,089 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:50,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:50,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1995632546, now seen corresponding path program 1 times [2021-05-01 06:39:50,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:50,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493477290] [2021-05-01 06:39:50,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:50,148 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:50,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:50,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:50,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:50,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:50,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:50,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:50,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:50,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-01 06:39:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:50,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:50,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:50,322 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:50,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493477290] [2021-05-01 06:39:50,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [493477290] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:50,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:50,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-01 06:39:50,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458975818] [2021-05-01 06:39:50,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-01 06:39:50,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:50,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-01 06:39:50,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-01 06:39:50,335 INFO L87 Difference]: Start difference. First operand has 34 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:50,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:50,562 INFO L93 Difference]: Finished difference Result 77 states and 109 transitions. [2021-05-01 06:39:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-01 06:39:50,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-05-01 06:39:50,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:50,569 INFO L225 Difference]: With dead ends: 77 [2021-05-01 06:39:50,570 INFO L226 Difference]: Without dead ends: 43 [2021-05-01 06:39:50,573 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-01 06:39:50,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-01 06:39:50,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 29. [2021-05-01 06:39:50,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:50,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-05-01 06:39:50,621 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 18 [2021-05-01 06:39:50,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:50,621 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-05-01 06:39:50,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:50,621 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-05-01 06:39:50,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-01 06:39:50,622 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:50,622 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:50,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 06:39:50,622 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:50,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:50,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1221136232, now seen corresponding path program 1 times [2021-05-01 06:39:50,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:50,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376929999] [2021-05-01 06:39:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:50,625 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:50,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:50,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:50,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:50,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:50,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:50,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:50,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:50,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:50,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:50,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-01 06:39:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:50,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:50,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:50,723 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:50,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376929999] [2021-05-01 06:39:50,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1376929999] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:50,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:50,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-01 06:39:50,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454828441] [2021-05-01 06:39:50,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-01 06:39:50,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:50,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-01 06:39:50,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-01 06:39:50,725 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:50,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:50,868 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2021-05-01 06:39:50,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-01 06:39:50,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-05-01 06:39:50,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:50,870 INFO L225 Difference]: With dead ends: 59 [2021-05-01 06:39:50,871 INFO L226 Difference]: Without dead ends: 38 [2021-05-01 06:39:50,875 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 55.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-01 06:39:50,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-01 06:39:50,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2021-05-01 06:39:50,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:50,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-05-01 06:39:50,892 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2021-05-01 06:39:50,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:50,892 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-05-01 06:39:50,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:50,892 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-05-01 06:39:50,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-01 06:39:50,893 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:50,893 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:50,893 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 06:39:50,893 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:50,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:50,894 INFO L82 PathProgramCache]: Analyzing trace with hash -957735862, now seen corresponding path program 1 times [2021-05-01 06:39:50,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:50,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80558283] [2021-05-01 06:39:50,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:50,908 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:50,912 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:50,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:50,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:50,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:50,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:50,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:50,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:50,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:50,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:50,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:50,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:50,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:50,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-05-01 06:39:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:50,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:50,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:50,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:50,979 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:50,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80558283] [2021-05-01 06:39:50,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [80558283] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:50,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:50,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-01 06:39:50,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565630400] [2021-05-01 06:39:50,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-01 06:39:50,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:50,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-01 06:39:50,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-01 06:39:50,981 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:51,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:51,099 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2021-05-01 06:39:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-01 06:39:51,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-05-01 06:39:51,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:51,101 INFO L225 Difference]: With dead ends: 61 [2021-05-01 06:39:51,101 INFO L226 Difference]: Without dead ends: 40 [2021-05-01 06:39:51,102 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-05-01 06:39:51,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-01 06:39:51,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2021-05-01 06:39:51,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:51,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-05-01 06:39:51,110 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 20 [2021-05-01 06:39:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:51,111 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-05-01 06:39:51,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-05-01 06:39:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 06:39:51,111 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:51,111 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:51,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 06:39:51,111 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:51,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:51,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1090222252, now seen corresponding path program 2 times [2021-05-01 06:39:51,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:51,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229190880] [2021-05-01 06:39:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:51,116 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:51,118 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:51,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:51,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:51,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:51,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:51,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:51,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:51,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:51,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 06:39:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:51,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:51,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:51,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:51,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:51,219 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:51,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229190880] [2021-05-01 06:39:51,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [229190880] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:51,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:51,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-01 06:39:51,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029170761] [2021-05-01 06:39:51,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-01 06:39:51,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:51,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-01 06:39:51,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-01 06:39:51,221 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:51,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:51,443 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2021-05-01 06:39:51,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-01 06:39:51,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-05-01 06:39:51,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:51,445 INFO L225 Difference]: With dead ends: 51 [2021-05-01 06:39:51,445 INFO L226 Difference]: Without dead ends: 38 [2021-05-01 06:39:51,446 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 149.4ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-05-01 06:39:51,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-01 06:39:51,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2021-05-01 06:39:51,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:51,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-05-01 06:39:51,456 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 22 [2021-05-01 06:39:51,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:51,456 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-05-01 06:39:51,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:51,456 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-05-01 06:39:51,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-01 06:39:51,457 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:51,458 INFO L519 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] [2021-05-01 06:39:51,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-01 06:39:51,460 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:51,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:51,461 INFO L82 PathProgramCache]: Analyzing trace with hash -911525692, now seen corresponding path program 1 times [2021-05-01 06:39:51,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:51,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144369199] [2021-05-01 06:39:51,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:51,466 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:51,467 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:51,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:51,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:51,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:51,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:51,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:51,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:51,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:51,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 06:39:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:51,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:51,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:51,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:51,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:51,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:51,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:51,597 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:51,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144369199] [2021-05-01 06:39:51,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [144369199] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:51,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:51,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-01 06:39:51,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433026619] [2021-05-01 06:39:51,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-01 06:39:51,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:51,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-01 06:39:51,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-01 06:39:51,599 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:51,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:51,835 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2021-05-01 06:39:51,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-01 06:39:51,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2021-05-01 06:39:51,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:51,836 INFO L225 Difference]: With dead ends: 60 [2021-05-01 06:39:51,836 INFO L226 Difference]: Without dead ends: 41 [2021-05-01 06:39:51,836 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 182.2ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-05-01 06:39:51,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-01 06:39:51,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2021-05-01 06:39:51,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:51,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-05-01 06:39:51,841 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 26 [2021-05-01 06:39:51,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:51,842 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-05-01 06:39:51,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:51,842 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-05-01 06:39:51,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-01 06:39:51,842 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:51,842 INFO L519 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] [2021-05-01 06:39:51,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-01 06:39:51,842 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:51,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:51,843 INFO L82 PathProgramCache]: Analyzing trace with hash -588044416, now seen corresponding path program 1 times [2021-05-01 06:39:51,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:51,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947403496] [2021-05-01 06:39:51,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:51,847 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:51,848 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:51,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:51,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:51,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:51,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:51,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:51,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:51,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:51,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 06:39:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:51,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:51,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:51,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:51,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:51,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:51,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:51,904 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:51,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947403496] [2021-05-01 06:39:51,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [947403496] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:51,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:51,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-01 06:39:51,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515948828] [2021-05-01 06:39:51,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-01 06:39:51,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:51,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-01 06:39:51,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-01 06:39:51,906 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:52,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:52,126 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2021-05-01 06:39:52,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-01 06:39:52,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2021-05-01 06:39:52,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:52,127 INFO L225 Difference]: With dead ends: 58 [2021-05-01 06:39:52,127 INFO L226 Difference]: Without dead ends: 45 [2021-05-01 06:39:52,127 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 150.2ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-05-01 06:39:52,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-01 06:39:52,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2021-05-01 06:39:52,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:52,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2021-05-01 06:39:52,133 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 29 [2021-05-01 06:39:52,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:52,133 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2021-05-01 06:39:52,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:52,133 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2021-05-01 06:39:52,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-01 06:39:52,133 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:52,133 INFO L519 BasicCegarLoop]: trace histogram [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] [2021-05-01 06:39:52,134 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-01 06:39:52,134 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:52,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:52,134 INFO L82 PathProgramCache]: Analyzing trace with hash 835149208, now seen corresponding path program 2 times [2021-05-01 06:39:52,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:52,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324514029] [2021-05-01 06:39:52,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:52,137 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:52,138 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:52,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:52,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:52,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 06:39:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:52,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:52,226 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:52,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324514029] [2021-05-01 06:39:52,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1324514029] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:52,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:52,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-01 06:39:52,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316572850] [2021-05-01 06:39:52,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-01 06:39:52,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:52,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-01 06:39:52,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-05-01 06:39:52,227 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:52,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:52,496 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2021-05-01 06:39:52,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-01 06:39:52,497 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-05-01 06:39:52,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:52,497 INFO L225 Difference]: With dead ends: 69 [2021-05-01 06:39:52,497 INFO L226 Difference]: Without dead ends: 50 [2021-05-01 06:39:52,498 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 195.0ms TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-05-01 06:39:52,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-01 06:39:52,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-05-01 06:39:52,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:52,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2021-05-01 06:39:52,505 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 33 [2021-05-01 06:39:52,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:52,505 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2021-05-01 06:39:52,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:52,505 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2021-05-01 06:39:52,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-01 06:39:52,505 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:52,505 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:52,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-01 06:39:52,506 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:52,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:52,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1075110444, now seen corresponding path program 3 times [2021-05-01 06:39:52,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:52,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878615217] [2021-05-01 06:39:52,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:52,509 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:52,510 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:52,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:52,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:52,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 06:39:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:52,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:52,595 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:52,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878615217] [2021-05-01 06:39:52,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [878615217] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:52,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:52,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-01 06:39:52,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620628484] [2021-05-01 06:39:52,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-01 06:39:52,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:52,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-01 06:39:52,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-05-01 06:39:52,596 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:52,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:52,857 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2021-05-01 06:39:52,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-01 06:39:52,858 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2021-05-01 06:39:52,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:52,858 INFO L225 Difference]: With dead ends: 69 [2021-05-01 06:39:52,858 INFO L226 Difference]: Without dead ends: 46 [2021-05-01 06:39:52,859 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 196.0ms TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-05-01 06:39:52,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-01 06:39:52,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2021-05-01 06:39:52,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:52,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2021-05-01 06:39:52,866 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 36 [2021-05-01 06:39:52,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:52,866 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2021-05-01 06:39:52,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:52,866 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2021-05-01 06:39:52,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-01 06:39:52,867 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:52,867 INFO L519 BasicCegarLoop]: trace histogram [3, 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] [2021-05-01 06:39:52,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-01 06:39:52,867 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:52,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:52,867 INFO L82 PathProgramCache]: Analyzing trace with hash 482252264, now seen corresponding path program 4 times [2021-05-01 06:39:52,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:52,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359766533] [2021-05-01 06:39:52,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:52,870 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:52,871 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:52,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:52,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:52,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 06:39:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:52,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:52,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:52,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:52,954 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:52,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359766533] [2021-05-01 06:39:52,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [359766533] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:52,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:52,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-01 06:39:52,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10726168] [2021-05-01 06:39:52,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-01 06:39:52,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:52,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-01 06:39:52,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-01 06:39:52,956 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:53,305 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2021-05-01 06:39:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-01 06:39:53,306 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2021-05-01 06:39:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:53,306 INFO L225 Difference]: With dead ends: 72 [2021-05-01 06:39:53,307 INFO L226 Difference]: Without dead ends: 49 [2021-05-01 06:39:53,307 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 266.5ms TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-05-01 06:39:53,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-01 06:39:53,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2021-05-01 06:39:53,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:53,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2021-05-01 06:39:53,313 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 39 [2021-05-01 06:39:53,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:53,313 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2021-05-01 06:39:53,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:53,314 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2021-05-01 06:39:53,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-01 06:39:53,314 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:53,314 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:53,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-01 06:39:53,314 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:53,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:53,315 INFO L82 PathProgramCache]: Analyzing trace with hash -450266964, now seen corresponding path program 5 times [2021-05-01 06:39:53,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:53,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586250878] [2021-05-01 06:39:53,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:53,319 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:53,320 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:53,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:53,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:53,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:53,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:53,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:53,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:53,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:53,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 06:39:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:53,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:53,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:53,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:53,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:53,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:53,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:53,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:53,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:53,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:53,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:53,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:53,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:53,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:53,419 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:53,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586250878] [2021-05-01 06:39:53,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1586250878] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:53,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:53,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-01 06:39:53,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727749693] [2021-05-01 06:39:53,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-01 06:39:53,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:53,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-01 06:39:53,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-01 06:39:53,421 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:53,799 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2021-05-01 06:39:53,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-01 06:39:53,800 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2021-05-01 06:39:53,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:53,800 INFO L225 Difference]: With dead ends: 75 [2021-05-01 06:39:53,801 INFO L226 Difference]: Without dead ends: 52 [2021-05-01 06:39:53,801 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 267.7ms TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2021-05-01 06:39:53,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-05-01 06:39:53,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-05-01 06:39:53,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 42 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:53,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2021-05-01 06:39:53,809 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 42 [2021-05-01 06:39:53,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:53,809 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2021-05-01 06:39:53,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:53,809 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2021-05-01 06:39:53,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-01 06:39:53,810 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:53,810 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:53,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-01 06:39:53,810 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:53,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:53,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1282117784, now seen corresponding path program 6 times [2021-05-01 06:39:53,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:53,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556602103] [2021-05-01 06:39:53,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:53,814 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:53,814 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:53,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:53,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:53,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:53,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:53,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:53,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:53,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:53,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 06:39:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:53,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:53,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:53,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:53,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:53,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:53,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:53,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:53,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:53,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:53,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:53,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:53,909 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:53,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556602103] [2021-05-01 06:39:53,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1556602103] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:53,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:53,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-01 06:39:53,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960840473] [2021-05-01 06:39:53,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-01 06:39:53,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:53,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-01 06:39:53,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-05-01 06:39:53,911 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:54,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:54,294 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2021-05-01 06:39:54,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-01 06:39:54,295 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2021-05-01 06:39:54,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:54,295 INFO L225 Difference]: With dead ends: 79 [2021-05-01 06:39:54,295 INFO L226 Difference]: Without dead ends: 60 [2021-05-01 06:39:54,296 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 282.1ms TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-05-01 06:39:54,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-01 06:39:54,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2021-05-01 06:39:54,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:54,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2021-05-01 06:39:54,302 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 45 [2021-05-01 06:39:54,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:54,303 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2021-05-01 06:39:54,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:54,303 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2021-05-01 06:39:54,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-01 06:39:54,303 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:54,303 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:54,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-01 06:39:54,304 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:54,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:54,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1463860828, now seen corresponding path program 7 times [2021-05-01 06:39:54,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:54,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413646142] [2021-05-01 06:39:54,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:54,307 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:54,308 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:54,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:54,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:54,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:54,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:54,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 06:39:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:54,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:54,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:54,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:54,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:54,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:54,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:54,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:54,423 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:54,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413646142] [2021-05-01 06:39:54,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [413646142] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:54,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:54,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-01 06:39:54,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739605638] [2021-05-01 06:39:54,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-01 06:39:54,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:54,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-01 06:39:54,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-05-01 06:39:54,424 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:54,870 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2021-05-01 06:39:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-01 06:39:54,870 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2021-05-01 06:39:54,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:54,871 INFO L225 Difference]: With dead ends: 82 [2021-05-01 06:39:54,871 INFO L226 Difference]: Without dead ends: 63 [2021-05-01 06:39:54,871 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 340.9ms TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2021-05-01 06:39:54,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-01 06:39:54,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2021-05-01 06:39:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.25) internal successors, (60), 48 states have internal predecessors, (60), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2021-05-01 06:39:54,878 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 48 [2021-05-01 06:39:54,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:54,878 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2021-05-01 06:39:54,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:54,878 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2021-05-01 06:39:54,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-01 06:39:54,879 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:54,879 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:54,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-01 06:39:54,879 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:54,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:54,879 INFO L82 PathProgramCache]: Analyzing trace with hash 670604008, now seen corresponding path program 8 times [2021-05-01 06:39:54,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:54,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000886451] [2021-05-01 06:39:54,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:54,882 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:54,883 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:54,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:54,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:54,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:54,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:54,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 06:39:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:54,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:54,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:54,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:54,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:54,975 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:54,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000886451] [2021-05-01 06:39:54,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2000886451] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:54,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:54,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-01 06:39:54,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449620116] [2021-05-01 06:39:54,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-01 06:39:54,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:54,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-01 06:39:54,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-01 06:39:54,977 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:55,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:55,233 INFO L93 Difference]: Finished difference Result 80 states and 96 transitions. [2021-05-01 06:39:55,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-01 06:39:55,233 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2021-05-01 06:39:55,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:55,234 INFO L225 Difference]: With dead ends: 80 [2021-05-01 06:39:55,234 INFO L226 Difference]: Without dead ends: 67 [2021-05-01 06:39:55,234 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 179.6ms TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-05-01 06:39:55,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-01 06:39:55,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2021-05-01 06:39:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 54 states have internal predecessors, (68), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2021-05-01 06:39:55,242 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 51 [2021-05-01 06:39:55,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:55,242 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2021-05-01 06:39:55,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:55,242 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2021-05-01 06:39:55,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-01 06:39:55,243 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:55,243 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:55,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-01 06:39:55,243 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:55,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:55,243 INFO L82 PathProgramCache]: Analyzing trace with hash -862659328, now seen corresponding path program 9 times [2021-05-01 06:39:55,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:55,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477797893] [2021-05-01 06:39:55,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:55,254 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:55,255 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:55,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:55,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:55,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 06:39:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:55,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:55,357 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:55,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477797893] [2021-05-01 06:39:55,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1477797893] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:55,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:55,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-01 06:39:55,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115800038] [2021-05-01 06:39:55,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-01 06:39:55,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:55,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-01 06:39:55,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-01 06:39:55,359 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:55,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:55,742 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2021-05-01 06:39:55,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-01 06:39:55,742 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2021-05-01 06:39:55,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:55,743 INFO L225 Difference]: With dead ends: 89 [2021-05-01 06:39:55,743 INFO L226 Difference]: Without dead ends: 70 [2021-05-01 06:39:55,744 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 294.3ms TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-05-01 06:39:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-05-01 06:39:55,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2021-05-01 06:39:55,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 55 states have internal predecessors, (69), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:55,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2021-05-01 06:39:55,751 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 55 [2021-05-01 06:39:55,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:55,751 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2021-05-01 06:39:55,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:55,752 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2021-05-01 06:39:55,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-01 06:39:55,752 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:55,752 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:55,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-01 06:39:55,752 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:55,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:55,753 INFO L82 PathProgramCache]: Analyzing trace with hash -804107836, now seen corresponding path program 10 times [2021-05-01 06:39:55,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:55,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337861484] [2021-05-01 06:39:55,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:55,759 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:55,760 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:55,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:55,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:55,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 06:39:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:55,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:55,854 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:55,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337861484] [2021-05-01 06:39:55,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [337861484] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:55,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:55,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-01 06:39:55,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573892507] [2021-05-01 06:39:55,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-01 06:39:55,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:55,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-01 06:39:55,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-05-01 06:39:55,856 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:56,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:56,311 INFO L93 Difference]: Finished difference Result 92 states and 113 transitions. [2021-05-01 06:39:56,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-01 06:39:56,311 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2021-05-01 06:39:56,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:56,312 INFO L225 Difference]: With dead ends: 92 [2021-05-01 06:39:56,312 INFO L226 Difference]: Without dead ends: 73 [2021-05-01 06:39:56,313 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 358.5ms TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2021-05-01 06:39:56,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-05-01 06:39:56,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2021-05-01 06:39:56,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 58 states have internal predecessors, (73), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2021-05-01 06:39:56,326 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 58 [2021-05-01 06:39:56,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:56,326 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2021-05-01 06:39:56,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:56,327 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2021-05-01 06:39:56,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-01 06:39:56,327 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:56,327 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:56,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-01 06:39:56,327 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:56,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:56,328 INFO L82 PathProgramCache]: Analyzing trace with hash -253331840, now seen corresponding path program 11 times [2021-05-01 06:39:56,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:56,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932366148] [2021-05-01 06:39:56,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:56,331 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:56,332 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:56,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:56,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:56,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:56,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:56,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 06:39:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:56,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:56,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:56,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:56,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:56,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:56,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:56,410 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:56,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932366148] [2021-05-01 06:39:56,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1932366148] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:56,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:56,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-01 06:39:56,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304349470] [2021-05-01 06:39:56,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-01 06:39:56,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:56,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-01 06:39:56,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-05-01 06:39:56,411 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:56,675 INFO L93 Difference]: Finished difference Result 90 states and 109 transitions. [2021-05-01 06:39:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-01 06:39:56,675 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2021-05-01 06:39:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:56,676 INFO L225 Difference]: With dead ends: 90 [2021-05-01 06:39:56,676 INFO L226 Difference]: Without dead ends: 77 [2021-05-01 06:39:56,676 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 194.6ms TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-05-01 06:39:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-01 06:39:56,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 72. [2021-05-01 06:39:56,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:56,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2021-05-01 06:39:56,685 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 61 [2021-05-01 06:39:56,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:56,685 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2021-05-01 06:39:56,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:56,685 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2021-05-01 06:39:56,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-01 06:39:56,686 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:56,686 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:56,686 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-01 06:39:56,686 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:56,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:56,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1836788888, now seen corresponding path program 12 times [2021-05-01 06:39:56,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:56,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115208487] [2021-05-01 06:39:56,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:56,689 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:56,690 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:56,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:56,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:56,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:56,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:56,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 06:39:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:56,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:56,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:56,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:56,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:56,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:56,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:56,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:56,772 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:56,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115208487] [2021-05-01 06:39:56,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2115208487] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:56,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:56,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-01 06:39:56,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867646756] [2021-05-01 06:39:56,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-01 06:39:56,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:56,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-01 06:39:56,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-01 06:39:56,773 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand has 11 states, 10 states have (on average 3.9) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:57,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:57,222 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2021-05-01 06:39:57,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-01 06:39:57,223 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.9) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 65 [2021-05-01 06:39:57,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:57,223 INFO L225 Difference]: With dead ends: 99 [2021-05-01 06:39:57,223 INFO L226 Difference]: Without dead ends: 80 [2021-05-01 06:39:57,224 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 327.2ms TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-05-01 06:39:57,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-01 06:39:57,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2021-05-01 06:39:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 65 states have internal predecessors, (82), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:57,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2021-05-01 06:39:57,236 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 65 [2021-05-01 06:39:57,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:57,236 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2021-05-01 06:39:57,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.9) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:57,236 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2021-05-01 06:39:57,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-01 06:39:57,237 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:57,237 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:57,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-01 06:39:57,237 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:57,238 INFO L82 PathProgramCache]: Analyzing trace with hash -509955284, now seen corresponding path program 13 times [2021-05-01 06:39:57,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:57,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770887781] [2021-05-01 06:39:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:57,242 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:57,243 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:57,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:57,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:57,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:57,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:57,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 06:39:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:57,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:57,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:57,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:57,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:57,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:57,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:57,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:57,337 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:57,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770887781] [2021-05-01 06:39:57,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1770887781] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:57,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:57,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-01 06:39:57,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078498324] [2021-05-01 06:39:57,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-01 06:39:57,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:57,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-01 06:39:57,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-05-01 06:39:57,338 INFO L87 Difference]: Start difference. First operand 73 states and 89 transitions. Second operand has 11 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:57,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:57,684 INFO L93 Difference]: Finished difference Result 97 states and 118 transitions. [2021-05-01 06:39:57,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-01 06:39:57,685 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 68 [2021-05-01 06:39:57,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:57,685 INFO L225 Difference]: With dead ends: 97 [2021-05-01 06:39:57,685 INFO L226 Difference]: Without dead ends: 84 [2021-05-01 06:39:57,686 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 246.4ms TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2021-05-01 06:39:57,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-05-01 06:39:57,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2021-05-01 06:39:57,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 71 states have (on average 1.267605633802817) internal successors, (90), 71 states have internal predecessors, (90), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:57,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2021-05-01 06:39:57,696 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 68 [2021-05-01 06:39:57,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:57,696 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2021-05-01 06:39:57,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:57,697 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2021-05-01 06:39:57,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-01 06:39:57,697 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:57,697 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:57,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-01 06:39:57,697 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:57,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:57,697 INFO L82 PathProgramCache]: Analyzing trace with hash 992555844, now seen corresponding path program 14 times [2021-05-01 06:39:57,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:57,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278737991] [2021-05-01 06:39:57,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:57,700 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:57,701 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:57,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:57,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:57,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:57,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:57,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:57,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:57,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:57,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 06:39:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:57,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:57,750 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:57,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278737991] [2021-05-01 06:39:57,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1278737991] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:57,750 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:57,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-01 06:39:57,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820629472] [2021-05-01 06:39:57,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-01 06:39:57,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:57,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-01 06:39:57,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-01 06:39:57,751 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:57,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:57,862 INFO L93 Difference]: Finished difference Result 150 states and 186 transitions. [2021-05-01 06:39:57,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-01 06:39:57,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 72 [2021-05-01 06:39:57,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:57,863 INFO L225 Difference]: With dead ends: 150 [2021-05-01 06:39:57,863 INFO L226 Difference]: Without dead ends: 82 [2021-05-01 06:39:57,864 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 40.7ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-05-01 06:39:57,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-01 06:39:57,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2021-05-01 06:39:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 73 states have internal predecessors, (92), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:57,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 99 transitions. [2021-05-01 06:39:57,874 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 99 transitions. Word has length 72 [2021-05-01 06:39:57,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:57,874 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 99 transitions. [2021-05-01 06:39:57,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:57,874 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 99 transitions. [2021-05-01 06:39:57,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-01 06:39:57,875 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:57,875 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:57,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-01 06:39:57,875 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:57,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:57,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1493400922, now seen corresponding path program 15 times [2021-05-01 06:39:57,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:57,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728108345] [2021-05-01 06:39:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:57,878 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:57,879 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:57,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:57,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:57,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:57,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:57,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:57,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:57,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:57,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:57,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-01 06:39:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:57,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:57,941 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:57,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728108345] [2021-05-01 06:39:57,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1728108345] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:57,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:57,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-01 06:39:57,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955474849] [2021-05-01 06:39:57,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-01 06:39:57,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:57,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-01 06:39:57,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-05-01 06:39:57,943 INFO L87 Difference]: Start difference. First operand 81 states and 99 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:58,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:58,046 INFO L93 Difference]: Finished difference Result 152 states and 188 transitions. [2021-05-01 06:39:58,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-01 06:39:58,046 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2021-05-01 06:39:58,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:58,047 INFO L225 Difference]: With dead ends: 152 [2021-05-01 06:39:58,047 INFO L226 Difference]: Without dead ends: 84 [2021-05-01 06:39:58,047 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 46.1ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-05-01 06:39:58,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-05-01 06:39:58,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2021-05-01 06:39:58,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 75 states have internal predecessors, (94), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:58,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2021-05-01 06:39:58,058 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 74 [2021-05-01 06:39:58,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:58,058 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2021-05-01 06:39:58,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:58,058 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2021-05-01 06:39:58,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-05-01 06:39:58,058 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:58,058 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:58,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-01 06:39:58,059 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:58,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:58,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1798930824, now seen corresponding path program 16 times [2021-05-01 06:39:58,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:58,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686355045] [2021-05-01 06:39:58,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:58,062 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:58,063 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:58,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:58,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:58,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:58,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:58,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:58,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:58,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:58,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:58,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:58,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-01 06:39:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:58,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:58,128 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:58,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686355045] [2021-05-01 06:39:58,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [686355045] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:58,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:58,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-01 06:39:58,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286238402] [2021-05-01 06:39:58,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-01 06:39:58,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:58,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-01 06:39:58,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-05-01 06:39:58,129 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:58,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:58,287 INFO L93 Difference]: Finished difference Result 169 states and 209 transitions. [2021-05-01 06:39:58,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-01 06:39:58,288 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 76 [2021-05-01 06:39:58,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:58,288 INFO L225 Difference]: With dead ends: 169 [2021-05-01 06:39:58,288 INFO L226 Difference]: Without dead ends: 101 [2021-05-01 06:39:58,289 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 55.5ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-05-01 06:39:58,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-01 06:39:58,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 85. [2021-05-01 06:39:58,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 77 states have (on average 1.2467532467532467) internal successors, (96), 77 states have internal predecessors, (96), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:39:58,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 103 transitions. [2021-05-01 06:39:58,299 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 103 transitions. Word has length 76 [2021-05-01 06:39:58,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:58,299 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 103 transitions. [2021-05-01 06:39:58,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:39:58,299 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 103 transitions. [2021-05-01 06:39:58,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-01 06:39:58,300 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:58,300 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:58,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-01 06:39:58,300 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:58,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:58,300 INFO L82 PathProgramCache]: Analyzing trace with hash 338841578, now seen corresponding path program 17 times [2021-05-01 06:39:58,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:58,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072721160] [2021-05-01 06:39:58,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:58,303 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:58,304 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:58,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:39:58,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:39:58,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:39:58,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:39:58,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:39:58,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:39:58,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:39:58,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:39:58,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:39:58,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:39:58,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:39:58,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:39:58,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:58,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:58,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:39:58,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:39:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:58,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:39:58,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:39:58,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:39:58,521 INFO L142 QuantifierPusher]: treesize reduction 19, result has 67.2 percent of original size [2021-05-01 06:39:58,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:39:58,544 INFO L142 QuantifierPusher]: treesize reduction 23, result has 66.7 percent of original size [2021-05-01 06:39:58,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:39:58,568 INFO L142 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-05-01 06:39:58,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:39:58,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:39:58,600 INFO L142 QuantifierPusher]: treesize reduction 4, result has 93.8 percent of original size [2021-05-01 06:39:58,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:39:58,630 INFO L142 QuantifierPusher]: treesize reduction 19, result has 73.2 percent of original size [2021-05-01 06:39:58,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:39:58,670 INFO L142 QuantifierPusher]: treesize reduction 19, result has 75.0 percent of original size [2021-05-01 06:39:58,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:39:58,711 INFO L142 QuantifierPusher]: treesize reduction 19, result has 72.9 percent of original size [2021-05-01 06:39:58,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:39:58,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:39:58,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:39:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:58,782 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:58,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072721160] [2021-05-01 06:39:58,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2072721160] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:58,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:58,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 06:39:58,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140301283] [2021-05-01 06:39:58,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-01 06:39:58,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:58,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-01 06:39:58,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-05-01 06:39:58,784 INFO L87 Difference]: Start difference. First operand 85 states and 103 transitions. Second operand has 19 states, 18 states have (on average 2.0) internal successors, (36), 16 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:40:00,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:00,002 INFO L93 Difference]: Finished difference Result 148 states and 182 transitions. [2021-05-01 06:40:00,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-01 06:40:00,003 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 16 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 78 [2021-05-01 06:40:00,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:00,003 INFO L225 Difference]: With dead ends: 148 [2021-05-01 06:40:00,003 INFO L226 Difference]: Without dead ends: 93 [2021-05-01 06:40:00,004 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1166.1ms TimeCoverageRelationStatistics Valid=173, Invalid=883, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 06:40:00,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-05-01 06:40:00,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2021-05-01 06:40:00,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 83 states have internal predecessors, (103), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2021-05-01 06:40:00,026 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 78 [2021-05-01 06:40:00,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:00,026 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2021-05-01 06:40:00,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 16 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:40:00,026 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2021-05-01 06:40:00,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-01 06:40:00,027 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:00,027 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 9, 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] [2021-05-01 06:40:00,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-01 06:40:00,027 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:00,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:00,027 INFO L82 PathProgramCache]: Analyzing trace with hash -2016963672, now seen corresponding path program 1 times [2021-05-01 06:40:00,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:00,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940412419] [2021-05-01 06:40:00,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:00,030 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:00,031 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:00,101 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-05-01 06:40:00,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:40:00,107 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-05-01 06:40:00,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:40:00,108 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:40:00,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:40:00,115 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:40:00,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:00,119 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:40:00,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:40:00,120 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:40:00,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:00,123 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:40:00,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:40:00,124 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:40:00,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:00,127 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:40:00,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:40:00,128 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:40:00,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:00,131 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:40:00,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:40:00,135 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:40:00,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:00,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:00,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:00,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:40:00,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:40:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:00,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:00,224 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-05-01 06:40:00,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:40:00,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:00,248 INFO L142 QuantifierPusher]: treesize reduction 10, result has 85.7 percent of original size [2021-05-01 06:40:00,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 06:40:00,271 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.0 percent of original size [2021-05-01 06:40:00,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:00,292 INFO L142 QuantifierPusher]: treesize reduction 18, result has 70.5 percent of original size [2021-05-01 06:40:00,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:40:00,317 INFO L142 QuantifierPusher]: treesize reduction 28, result has 70.8 percent of original size [2021-05-01 06:40:00,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:40:00,349 INFO L142 QuantifierPusher]: treesize reduction 24, result has 68.8 percent of original size [2021-05-01 06:40:00,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:00,373 INFO L142 QuantifierPusher]: treesize reduction 24, result has 60.7 percent of original size [2021-05-01 06:40:00,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:40:00,406 INFO L142 QuantifierPusher]: treesize reduction 12, result has 84.8 percent of original size [2021-05-01 06:40:00,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 06:40:00,444 INFO L142 QuantifierPusher]: treesize reduction 28, result has 67.8 percent of original size [2021-05-01 06:40:00,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:40:00,471 INFO L142 QuantifierPusher]: treesize reduction 28, result has 67.8 percent of original size [2021-05-01 06:40:00,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:40:00,508 INFO L142 QuantifierPusher]: treesize reduction 28, result has 67.8 percent of original size [2021-05-01 06:40:00,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:40:00,549 INFO L142 QuantifierPusher]: treesize reduction 12, result has 74.5 percent of original size [2021-05-01 06:40:00,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:00,573 INFO L142 QuantifierPusher]: treesize reduction 12, result has 74.5 percent of original size [2021-05-01 06:40:00,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:00,597 INFO L142 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-05-01 06:40:00,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:40:00,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:00,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:00,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:40:00,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:00,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:00,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:00,742 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:00,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940412419] [2021-05-01 06:40:00,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [940412419] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:00,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:00,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-01 06:40:00,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793768302] [2021-05-01 06:40:00,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-01 06:40:00,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:00,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-01 06:40:00,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2021-05-01 06:40:00,744 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 24 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:40:02,978 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 93 [2021-05-01 06:40:03,582 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2021-05-01 06:40:03,814 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2021-05-01 06:40:04,225 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2021-05-01 06:40:05,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:05,246 INFO L93 Difference]: Finished difference Result 388 states and 513 transitions. [2021-05-01 06:40:05,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-01 06:40:05,246 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 24 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 78 [2021-05-01 06:40:05,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:05,248 INFO L225 Difference]: With dead ends: 388 [2021-05-01 06:40:05,248 INFO L226 Difference]: Without dead ends: 342 [2021-05-01 06:40:05,250 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 10 SyntacticMatches, 5 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1833 ImplicationChecksByTransitivity, 4019.8ms TimeCoverageRelationStatistics Valid=1048, Invalid=5924, Unknown=0, NotChecked=0, Total=6972 [2021-05-01 06:40:05,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-05-01 06:40:05,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 230. [2021-05-01 06:40:05,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 222 states have (on average 1.3693693693693694) internal successors, (304), 222 states have internal predecessors, (304), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:05,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 311 transitions. [2021-05-01 06:40:05,299 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 311 transitions. Word has length 78 [2021-05-01 06:40:05,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:05,299 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 311 transitions. [2021-05-01 06:40:05,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 24 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:40:05,300 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 311 transitions. [2021-05-01 06:40:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-01 06:40:05,300 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:05,300 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 8, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:40:05,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-01 06:40:05,301 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:05,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:05,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1248644326, now seen corresponding path program 2 times [2021-05-01 06:40:05,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:05,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810428914] [2021-05-01 06:40:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:05,304 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:05,305 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:05,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:05,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:05,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:40:05,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:40:05,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:40:05,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:40:05,389 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 06:40:05,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:40:05,399 INFO L142 QuantifierPusher]: treesize reduction 38, result has 44.9 percent of original size [2021-05-01 06:40:05,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:05,415 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-05-01 06:40:05,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:40:05,424 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-05-01 06:40:05,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:40:05,432 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-05-01 06:40:05,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:05,447 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-05-01 06:40:05,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:05,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:05,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:05,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:05,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:05,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:05,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:40:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:05,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:05,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:40:05,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:40:05,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:40:05,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:40:05,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:40:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:05,543 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:05,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810428914] [2021-05-01 06:40:05,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [810428914] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:05,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:05,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-01 06:40:05,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452620788] [2021-05-01 06:40:05,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-01 06:40:05,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:05,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-01 06:40:05,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-05-01 06:40:05,545 INFO L87 Difference]: Start difference. First operand 230 states and 311 transitions. Second operand has 18 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:40:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:06,146 INFO L93 Difference]: Finished difference Result 253 states and 337 transitions. [2021-05-01 06:40:06,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-01 06:40:06,148 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 78 [2021-05-01 06:40:06,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:06,149 INFO L225 Difference]: With dead ends: 253 [2021-05-01 06:40:06,149 INFO L226 Difference]: Without dead ends: 251 [2021-05-01 06:40:06,150 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 442.5ms TimeCoverageRelationStatistics Valid=281, Invalid=1201, Unknown=0, NotChecked=0, Total=1482 [2021-05-01 06:40:06,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-05-01 06:40:06,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 236. [2021-05-01 06:40:06,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 226 states have (on average 1.3628318584070795) internal successors, (308), 227 states have internal predecessors, (308), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 06:40:06,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 317 transitions. [2021-05-01 06:40:06,204 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 317 transitions. Word has length 78 [2021-05-01 06:40:06,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:06,204 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 317 transitions. [2021-05-01 06:40:06,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:40:06,204 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 317 transitions. [2021-05-01 06:40:06,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-01 06:40:06,205 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:06,205 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 8, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:40:06,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-01 06:40:06,205 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:06,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:06,205 INFO L82 PathProgramCache]: Analyzing trace with hash 479012826, now seen corresponding path program 1 times [2021-05-01 06:40:06,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:06,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322243928] [2021-05-01 06:40:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:06,208 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:06,209 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:06,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:06,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:06,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:06,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:06,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:06,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:06,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:06,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:40:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:06,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:06,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:06,331 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-05-01 06:40:06,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:40:06,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:06,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:40:06,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:06,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:40:06,357 INFO L142 QuantifierPusher]: treesize reduction 18, result has 43.8 percent of original size [2021-05-01 06:40:06,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:40:06,369 INFO L142 QuantifierPusher]: treesize reduction 22, result has 48.8 percent of original size [2021-05-01 06:40:06,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:06,384 INFO L142 QuantifierPusher]: treesize reduction 55, result has 36.8 percent of original size [2021-05-01 06:40:06,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:06,399 INFO L142 QuantifierPusher]: treesize reduction 47, result has 33.8 percent of original size [2021-05-01 06:40:06,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:06,414 INFO L142 QuantifierPusher]: treesize reduction 24, result has 61.3 percent of original size [2021-05-01 06:40:06,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:40:06,437 INFO L142 QuantifierPusher]: treesize reduction 63, result has 33.7 percent of original size [2021-05-01 06:40:06,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:06,465 INFO L142 QuantifierPusher]: treesize reduction 63, result has 33.7 percent of original size [2021-05-01 06:40:06,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:06,493 INFO L142 QuantifierPusher]: treesize reduction 63, result has 33.7 percent of original size [2021-05-01 06:40:06,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:06,521 INFO L142 QuantifierPusher]: treesize reduction 54, result has 8.5 percent of original size [2021-05-01 06:40:06,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:06,538 INFO L142 QuantifierPusher]: treesize reduction 67, result has 6.9 percent of original size [2021-05-01 06:40:06,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:06,553 INFO L142 QuantifierPusher]: treesize reduction 100, result has 35.1 percent of original size [2021-05-01 06:40:06,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:40:06,588 INFO L142 QuantifierPusher]: treesize reduction 99, result has 45.6 percent of original size [2021-05-01 06:40:06,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-01 06:40:06,636 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.8 percent of original size [2021-05-01 06:40:06,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:40:06,675 INFO L142 QuantifierPusher]: treesize reduction 63, result has 43.8 percent of original size [2021-05-01 06:40:06,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:40:06,713 INFO L142 QuantifierPusher]: treesize reduction 63, result has 41.7 percent of original size [2021-05-01 06:40:06,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:40:06,750 INFO L142 QuantifierPusher]: treesize reduction 63, result has 40.6 percent of original size [2021-05-01 06:40:06,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:40:06,787 INFO L142 QuantifierPusher]: treesize reduction 31, result has 46.6 percent of original size [2021-05-01 06:40:06,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:06,808 INFO L142 QuantifierPusher]: treesize reduction 6, result has 92.3 percent of original size [2021-05-01 06:40:06,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:40:06,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:06,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:06,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:06,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:40:06,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:06,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:06,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:06,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:06,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:06,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:40:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:06,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:06,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:06,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:06,926 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:06,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322243928] [2021-05-01 06:40:06,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1322243928] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:06,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:06,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-01 06:40:06,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067248400] [2021-05-01 06:40:06,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-01 06:40:06,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:06,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-01 06:40:06,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2021-05-01 06:40:06,928 INFO L87 Difference]: Start difference. First operand 236 states and 317 transitions. Second operand has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 28 states have internal predecessors, (58), 3 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:07,979 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2021-05-01 06:40:12,601 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2021-05-01 06:40:13,567 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2021-05-01 06:40:16,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:16,108 INFO L93 Difference]: Finished difference Result 965 states and 1315 transitions. [2021-05-01 06:40:16,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-01 06:40:16,109 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 28 states have internal predecessors, (58), 3 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 86 [2021-05-01 06:40:16,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:16,111 INFO L225 Difference]: With dead ends: 965 [2021-05-01 06:40:16,111 INFO L226 Difference]: Without dead ends: 842 [2021-05-01 06:40:16,114 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5175 ImplicationChecksByTransitivity, 8112.4ms TimeCoverageRelationStatistics Valid=2687, Invalid=13825, Unknown=0, NotChecked=0, Total=16512 [2021-05-01 06:40:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-05-01 06:40:16,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 460. [2021-05-01 06:40:16,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 450 states have (on average 1.4133333333333333) internal successors, (636), 451 states have internal predecessors, (636), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 06:40:16,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 645 transitions. [2021-05-01 06:40:16,247 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 645 transitions. Word has length 86 [2021-05-01 06:40:16,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:16,247 INFO L480 AbstractCegarLoop]: Abstraction has 460 states and 645 transitions. [2021-05-01 06:40:16,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 28 states have internal predecessors, (58), 3 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:16,248 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 645 transitions. [2021-05-01 06:40:16,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-01 06:40:16,248 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:16,249 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 7, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:40:16,249 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-01 06:40:16,249 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:16,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:16,249 INFO L82 PathProgramCache]: Analyzing trace with hash 84646040, now seen corresponding path program 2 times [2021-05-01 06:40:16,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:16,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573569910] [2021-05-01 06:40:16,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:16,253 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:16,254 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:16,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:16,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:16,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:40:16,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:40:16,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:40:16,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:40:16,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:40:16,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:40:16,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:40:16,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:40:16,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:40:16,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:40:16,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:16,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:16,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:16,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:40:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:16,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:16,414 INFO L142 QuantifierPusher]: treesize reduction 22, result has 31.3 percent of original size [2021-05-01 06:40:16,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:16,424 INFO L142 QuantifierPusher]: treesize reduction 22, result has 52.2 percent of original size [2021-05-01 06:40:16,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:16,443 INFO L142 QuantifierPusher]: treesize reduction 26, result has 54.4 percent of original size [2021-05-01 06:40:16,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:16,464 INFO L142 QuantifierPusher]: treesize reduction 21, result has 62.5 percent of original size [2021-05-01 06:40:16,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:16,488 INFO L142 QuantifierPusher]: treesize reduction 22, result has 71.1 percent of original size [2021-05-01 06:40:16,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:40:16,525 INFO L142 QuantifierPusher]: treesize reduction 21, result has 79.4 percent of original size [2021-05-01 06:40:16,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 06:40:16,559 INFO L142 QuantifierPusher]: treesize reduction 4, result has 90.2 percent of original size [2021-05-01 06:40:16,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:40:16,578 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-05-01 06:40:16,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:16,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:16,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:16,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:40:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:16,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:16,649 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:16,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573569910] [2021-05-01 06:40:16,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [573569910] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:16,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:16,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-01 06:40:16,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528465845] [2021-05-01 06:40:16,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-01 06:40:16,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:16,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-01 06:40:16,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-05-01 06:40:16,650 INFO L87 Difference]: Start difference. First operand 460 states and 645 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:17,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:17,404 INFO L93 Difference]: Finished difference Result 807 states and 1149 transitions. [2021-05-01 06:40:17,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-01 06:40:17,405 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 86 [2021-05-01 06:40:17,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:17,406 INFO L225 Difference]: With dead ends: 807 [2021-05-01 06:40:17,407 INFO L226 Difference]: Without dead ends: 424 [2021-05-01 06:40:17,407 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 645.7ms TimeCoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2021-05-01 06:40:17,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-05-01 06:40:17,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 423. [2021-05-01 06:40:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 413 states have (on average 1.430992736077482) internal successors, (591), 414 states have internal predecessors, (591), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 06:40:17,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 600 transitions. [2021-05-01 06:40:17,528 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 600 transitions. Word has length 86 [2021-05-01 06:40:17,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:17,528 INFO L480 AbstractCegarLoop]: Abstraction has 423 states and 600 transitions. [2021-05-01 06:40:17,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:17,528 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 600 transitions. [2021-05-01 06:40:17,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-01 06:40:17,529 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:17,529 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 9, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:40:17,529 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-01 06:40:17,529 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:17,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:17,530 INFO L82 PathProgramCache]: Analyzing trace with hash -810662372, now seen corresponding path program 3 times [2021-05-01 06:40:17,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:17,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692604047] [2021-05-01 06:40:17,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:17,533 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:17,533 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:17,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:40:17,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:40:17,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:17,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:17,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:17,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:17,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:17,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:17,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:17,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:17,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:17,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:17,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:17,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:17,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:40:17,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:40:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:17,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:17,684 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-05-01 06:40:17,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:40:17,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:17,706 INFO L142 QuantifierPusher]: treesize reduction 4, result has 93.8 percent of original size [2021-05-01 06:40:17,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 06:40:17,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:17,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:17,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:17,766 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-05-01 06:40:17,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:17,783 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.9 percent of original size [2021-05-01 06:40:17,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:40:17,802 INFO L142 QuantifierPusher]: treesize reduction 22, result has 74.1 percent of original size [2021-05-01 06:40:17,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:40:17,834 INFO L142 QuantifierPusher]: treesize reduction 40, result has 57.4 percent of original size [2021-05-01 06:40:17,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:40:17,858 INFO L142 QuantifierPusher]: treesize reduction 40, result has 48.7 percent of original size [2021-05-01 06:40:17,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:40:17,882 INFO L142 QuantifierPusher]: treesize reduction 24, result has 73.6 percent of original size [2021-05-01 06:40:17,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 06:40:17,923 INFO L142 QuantifierPusher]: treesize reduction 40, result has 59.6 percent of original size [2021-05-01 06:40:17,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:40:17,951 INFO L142 QuantifierPusher]: treesize reduction 40, result has 59.6 percent of original size [2021-05-01 06:40:17,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:40:17,982 INFO L142 QuantifierPusher]: treesize reduction 24, result has 59.3 percent of original size [2021-05-01 06:40:17,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:18,005 INFO L142 QuantifierPusher]: treesize reduction 24, result has 59.3 percent of original size [2021-05-01 06:40:18,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:18,030 INFO L142 QuantifierPusher]: treesize reduction 24, result has 59.3 percent of original size [2021-05-01 06:40:18,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:18,057 INFO L142 QuantifierPusher]: treesize reduction 12, result has 76.9 percent of original size [2021-05-01 06:40:18,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:18,093 INFO L142 QuantifierPusher]: treesize reduction 4, result has 94.5 percent of original size [2021-05-01 06:40:18,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:40:18,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:18,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:40:18,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:18,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:18,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:18,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:18,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:40:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:18,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:18,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:18,185 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:18,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692604047] [2021-05-01 06:40:18,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1692604047] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:18,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:18,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-01 06:40:18,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115898166] [2021-05-01 06:40:18,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-01 06:40:18,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:18,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-01 06:40:18,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2021-05-01 06:40:18,189 INFO L87 Difference]: Start difference. First operand 423 states and 600 transitions. Second operand has 26 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 24 states have internal predecessors, (51), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:19,652 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2021-05-01 06:40:20,513 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2021-05-01 06:40:22,060 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2021-05-01 06:40:22,195 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2021-05-01 06:40:23,634 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 82 [2021-05-01 06:40:23,942 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2021-05-01 06:40:24,127 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 75 [2021-05-01 06:40:24,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:24,546 INFO L93 Difference]: Finished difference Result 1400 states and 1971 transitions. [2021-05-01 06:40:24,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-01 06:40:24,547 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 24 states have internal predecessors, (51), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 86 [2021-05-01 06:40:24,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:24,550 INFO L225 Difference]: With dead ends: 1400 [2021-05-01 06:40:24,550 INFO L226 Difference]: Without dead ends: 1078 [2021-05-01 06:40:24,552 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2664 ImplicationChecksByTransitivity, 5654.8ms TimeCoverageRelationStatistics Valid=1497, Invalid=7433, Unknown=0, NotChecked=0, Total=8930 [2021-05-01 06:40:24,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-05-01 06:40:24,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 781. [2021-05-01 06:40:24,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 771 states have (on average 1.4280155642023347) internal successors, (1101), 772 states have internal predecessors, (1101), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 06:40:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1110 transitions. [2021-05-01 06:40:24,806 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1110 transitions. Word has length 86 [2021-05-01 06:40:24,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:24,806 INFO L480 AbstractCegarLoop]: Abstraction has 781 states and 1110 transitions. [2021-05-01 06:40:24,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 24 states have internal predecessors, (51), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:24,806 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1110 transitions. [2021-05-01 06:40:24,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-01 06:40:24,807 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:24,807 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 8, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:40:24,807 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-01 06:40:24,807 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:24,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:24,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1708055650, now seen corresponding path program 4 times [2021-05-01 06:40:24,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:24,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768656184] [2021-05-01 06:40:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:24,811 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:24,812 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:24,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:24,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:24,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:40:24,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:40:24,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:40:24,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:40:24,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:40:24,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:40:24,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:40:24,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:40:24,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:40:24,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:40:24,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:24,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:24,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:24,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:40:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:24,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:24,951 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-05-01 06:40:24,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:40:24,959 INFO L142 QuantifierPusher]: treesize reduction 26, result has 42.2 percent of original size [2021-05-01 06:40:24,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:24,966 INFO L142 QuantifierPusher]: treesize reduction 30, result has 46.4 percent of original size [2021-05-01 06:40:24,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:24,983 INFO L142 QuantifierPusher]: treesize reduction 54, result has 42.6 percent of original size [2021-05-01 06:40:24,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:25,000 INFO L142 QuantifierPusher]: treesize reduction 54, result has 44.3 percent of original size [2021-05-01 06:40:25,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:40:25,020 INFO L142 QuantifierPusher]: treesize reduction 54, result has 42.6 percent of original size [2021-05-01 06:40:25,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:25,041 INFO L142 QuantifierPusher]: treesize reduction 71, result has 31.7 percent of original size [2021-05-01 06:40:25,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:25,060 INFO L142 QuantifierPusher]: treesize reduction 71, result has 31.7 percent of original size [2021-05-01 06:40:25,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:25,088 INFO L142 QuantifierPusher]: treesize reduction 30, result has 73.7 percent of original size [2021-05-01 06:40:25,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:40:25,121 INFO L142 QuantifierPusher]: treesize reduction 30, result has 73.7 percent of original size [2021-05-01 06:40:25,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:40:25,151 INFO L142 QuantifierPusher]: treesize reduction 30, result has 73.7 percent of original size [2021-05-01 06:40:25,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:40:25,180 INFO L142 QuantifierPusher]: treesize reduction 24, result has 57.9 percent of original size [2021-05-01 06:40:25,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:25,202 INFO L142 QuantifierPusher]: treesize reduction 17, result has 65.3 percent of original size [2021-05-01 06:40:25,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:25,223 INFO L142 QuantifierPusher]: treesize reduction 4, result has 93.1 percent of original size [2021-05-01 06:40:25,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:40:25,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:25,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:40:25,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:25,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:25,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:25,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:25,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:25,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:25,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:25,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:25,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:40:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:25,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:25,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:25,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:25,334 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:25,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768656184] [2021-05-01 06:40:25,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [768656184] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:25,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:25,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-05-01 06:40:25,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181373990] [2021-05-01 06:40:25,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-01 06:40:25,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:25,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-01 06:40:25,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2021-05-01 06:40:25,335 INFO L87 Difference]: Start difference. First operand 781 states and 1110 transitions. Second operand has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 21 states have internal predecessors, (51), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:28,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:28,963 INFO L93 Difference]: Finished difference Result 2158 states and 3052 transitions. [2021-05-01 06:40:28,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-01 06:40:28,963 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 21 states have internal predecessors, (51), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 86 [2021-05-01 06:40:28,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:28,967 INFO L225 Difference]: With dead ends: 2158 [2021-05-01 06:40:28,967 INFO L226 Difference]: Without dead ends: 1528 [2021-05-01 06:40:28,969 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 13 SyntacticMatches, 6 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1443 ImplicationChecksByTransitivity, 2879.6ms TimeCoverageRelationStatistics Valid=984, Invalid=4128, Unknown=0, NotChecked=0, Total=5112 [2021-05-01 06:40:28,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-05-01 06:40:29,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1070. [2021-05-01 06:40:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1060 states have (on average 1.4235849056603773) internal successors, (1509), 1061 states have internal predecessors, (1509), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 06:40:29,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1518 transitions. [2021-05-01 06:40:29,351 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1518 transitions. Word has length 86 [2021-05-01 06:40:29,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:29,351 INFO L480 AbstractCegarLoop]: Abstraction has 1070 states and 1518 transitions. [2021-05-01 06:40:29,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 21 states have internal predecessors, (51), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:29,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1518 transitions. [2021-05-01 06:40:29,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-01 06:40:29,353 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:29,353 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 7, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:40:29,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-01 06:40:29,353 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:29,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:29,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1723574368, now seen corresponding path program 5 times [2021-05-01 06:40:29,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:29,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851470849] [2021-05-01 06:40:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:29,357 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:29,358 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:29,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:29,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:40:29,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:29,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:40:29,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:29,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:29,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:29,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:29,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:29,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:29,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:29,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:29,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:29,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:29,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:29,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:29,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:29,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:29,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:29,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:29,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:29,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:29,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:29,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:29,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:29,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:29,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:29,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:29,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:40:29,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:40:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:29,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:29,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:29,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:29,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:40:29,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:29,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:40:29,542 INFO L142 QuantifierPusher]: treesize reduction 23, result has 32.4 percent of original size [2021-05-01 06:40:29,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:40:29,554 INFO L142 QuantifierPusher]: treesize reduction 53, result has 8.6 percent of original size [2021-05-01 06:40:29,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:29,564 INFO L142 QuantifierPusher]: treesize reduction 46, result has 27.0 percent of original size [2021-05-01 06:40:29,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:29,581 INFO L142 QuantifierPusher]: treesize reduction 46, result has 37.0 percent of original size [2021-05-01 06:40:29,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:29,608 INFO L142 QuantifierPusher]: treesize reduction 60, result has 7.7 percent of original size [2021-05-01 06:40:29,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:29,620 INFO L142 QuantifierPusher]: treesize reduction 60, result has 7.7 percent of original size [2021-05-01 06:40:29,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:29,632 INFO L142 QuantifierPusher]: treesize reduction 70, result has 39.1 percent of original size [2021-05-01 06:40:29,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:40:29,670 INFO L142 QuantifierPusher]: treesize reduction 68, result has 39.8 percent of original size [2021-05-01 06:40:29,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:40:29,700 INFO L142 QuantifierPusher]: treesize reduction 50, result has 54.5 percent of original size [2021-05-01 06:40:29,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 06:40:29,747 INFO L142 QuantifierPusher]: treesize reduction 50, result has 54.5 percent of original size [2021-05-01 06:40:29,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 06:40:29,793 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.1 percent of original size [2021-05-01 06:40:29,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:29,823 INFO L142 QuantifierPusher]: treesize reduction 30, result has 14.3 percent of original size [2021-05-01 06:40:29,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:29,838 INFO L142 QuantifierPusher]: treesize reduction 43, result has 10.4 percent of original size [2021-05-01 06:40:29,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:29,855 INFO L142 QuantifierPusher]: treesize reduction 27, result has 65.8 percent of original size [2021-05-01 06:40:29,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:40:29,901 INFO L142 QuantifierPusher]: treesize reduction 23, result has 67.6 percent of original size [2021-05-01 06:40:29,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:40:29,937 INFO L142 QuantifierPusher]: treesize reduction 24, result has 65.7 percent of original size [2021-05-01 06:40:29,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:40:29,971 INFO L142 QuantifierPusher]: treesize reduction 24, result has 65.7 percent of original size [2021-05-01 06:40:29,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:40:30,008 INFO L142 QuantifierPusher]: treesize reduction 13, result has 85.1 percent of original size [2021-05-01 06:40:30,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 06:40:30,061 INFO L142 QuantifierPusher]: treesize reduction 13, result has 85.1 percent of original size [2021-05-01 06:40:30,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 06:40:30,114 INFO L142 QuantifierPusher]: treesize reduction 6, result has 92.0 percent of original size [2021-05-01 06:40:30,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:40:30,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:30,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:30,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:30,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:40:30,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:30,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:30,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:30,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:40:30,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:30,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:30,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:30,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:30,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:30,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:30,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:40:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:30,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:30,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:30,295 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:30,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851470849] [2021-05-01 06:40:30,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1851470849] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:30,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:30,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-01 06:40:30,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021157939] [2021-05-01 06:40:30,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-01 06:40:30,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:30,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-01 06:40:30,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=987, Unknown=0, NotChecked=0, Total=1122 [2021-05-01 06:40:30,297 INFO L87 Difference]: Start difference. First operand 1070 states and 1518 transitions. Second operand has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 32 states have internal predecessors, (67), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:31,622 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-05-01 06:40:32,351 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-01 06:40:33,351 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-05-01 06:40:36,297 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-05-01 06:40:38,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:38,857 INFO L93 Difference]: Finished difference Result 1730 states and 2416 transitions. [2021-05-01 06:40:38,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-01 06:40:38,857 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 32 states have internal predecessors, (67), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 86 [2021-05-01 06:40:38,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:38,861 INFO L225 Difference]: With dead ends: 1730 [2021-05-01 06:40:38,861 INFO L226 Difference]: Without dead ends: 1685 [2021-05-01 06:40:38,864 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4558 ImplicationChecksByTransitivity, 7668.0ms TimeCoverageRelationStatistics Valid=2071, Invalid=12935, Unknown=0, NotChecked=0, Total=15006 [2021-05-01 06:40:38,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2021-05-01 06:40:39,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 967. [2021-05-01 06:40:39,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 957 states have (on average 1.3584117032392895) internal successors, (1300), 958 states have internal predecessors, (1300), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 06:40:39,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1309 transitions. [2021-05-01 06:40:39,238 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1309 transitions. Word has length 86 [2021-05-01 06:40:39,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:39,239 INFO L480 AbstractCegarLoop]: Abstraction has 967 states and 1309 transitions. [2021-05-01 06:40:39,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 32 states have internal predecessors, (67), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:39,239 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1309 transitions. [2021-05-01 06:40:39,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-01 06:40:39,240 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:39,240 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:40:39,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-01 06:40:39,240 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:39,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:39,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1661534754, now seen corresponding path program 6 times [2021-05-01 06:40:39,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:39,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166628103] [2021-05-01 06:40:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:39,244 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:39,244 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:39,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:40:39,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:40:39,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:39,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:39,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:39,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:39,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:39,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:39,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:39,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:39,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:39,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:39,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:39,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:39,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:40:39,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:40:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:39,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:39,403 INFO L142 QuantifierPusher]: treesize reduction 18, result has 43.8 percent of original size [2021-05-01 06:40:39,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:40:39,415 INFO L142 QuantifierPusher]: treesize reduction 26, result has 61.2 percent of original size [2021-05-01 06:40:39,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:40:39,438 INFO L142 QuantifierPusher]: treesize reduction 31, result has 69.0 percent of original size [2021-05-01 06:40:39,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:40:39,470 INFO L142 QuantifierPusher]: treesize reduction 47, result has 52.5 percent of original size [2021-05-01 06:40:39,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:40:39,488 INFO L142 QuantifierPusher]: treesize reduction 47, result has 43.4 percent of original size [2021-05-01 06:40:39,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:39,506 INFO L142 QuantifierPusher]: treesize reduction 47, result has 41.3 percent of original size [2021-05-01 06:40:39,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:39,524 INFO L142 QuantifierPusher]: treesize reduction 47, result has 41.3 percent of original size [2021-05-01 06:40:39,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:39,542 INFO L142 QuantifierPusher]: treesize reduction 70, result has 32.7 percent of original size [2021-05-01 06:40:39,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:40:39,564 INFO L142 QuantifierPusher]: treesize reduction 69, result has 36.7 percent of original size [2021-05-01 06:40:39,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:39,592 INFO L142 QuantifierPusher]: treesize reduction 56, result has 59.4 percent of original size [2021-05-01 06:40:39,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 06:40:39,645 INFO L142 QuantifierPusher]: treesize reduction 50, result has 64.5 percent of original size [2021-05-01 06:40:39,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-05-01 06:40:39,708 INFO L142 QuantifierPusher]: treesize reduction 62, result has 56.0 percent of original size [2021-05-01 06:40:39,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 06:40:39,758 INFO L142 QuantifierPusher]: treesize reduction 61, result has 47.9 percent of original size [2021-05-01 06:40:39,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:40:39,794 INFO L142 QuantifierPusher]: treesize reduction 53, result has 50.9 percent of original size [2021-05-01 06:40:39,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:40:39,830 INFO L142 QuantifierPusher]: treesize reduction 37, result has 73.8 percent of original size [2021-05-01 06:40:39,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 06:40:39,890 INFO L142 QuantifierPusher]: treesize reduction 35, result has 74.8 percent of original size [2021-05-01 06:40:39,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 06:40:39,949 INFO L142 QuantifierPusher]: treesize reduction 31, result has 71.0 percent of original size [2021-05-01 06:40:39,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 06:40:40,001 INFO L142 QuantifierPusher]: treesize reduction 16, result has 83.5 percent of original size [2021-05-01 06:40:40,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 06:40:40,063 INFO L142 QuantifierPusher]: treesize reduction 14, result has 85.3 percent of original size [2021-05-01 06:40:40,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 06:40:40,126 INFO L142 QuantifierPusher]: treesize reduction 6, result has 92.0 percent of original size [2021-05-01 06:40:40,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:40:40,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:40,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:40,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:40,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:40,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:40,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:40:40,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:40,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:40:40,315 INFO L142 QuantifierPusher]: treesize reduction 4, result has 94.0 percent of original size [2021-05-01 06:40:40,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:40:40,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:40,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:40,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:40,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:40:40,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:40,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:40,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:40,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:40,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:40,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:40,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:40:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:40,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:40,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:40,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:40,484 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:40,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166628103] [2021-05-01 06:40:40,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [166628103] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:40,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:40,485 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-05-01 06:40:40,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675523803] [2021-05-01 06:40:40,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-01 06:40:40,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:40,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-01 06:40:40,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1057, Unknown=0, NotChecked=0, Total=1190 [2021-05-01 06:40:40,505 INFO L87 Difference]: Start difference. First operand 967 states and 1309 transitions. Second operand has 35 states, 35 states have (on average 1.8) internal successors, (63), 33 states have internal predecessors, (63), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:42,297 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 88 [2021-05-01 06:40:42,655 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 108 [2021-05-01 06:40:45,960 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2021-05-01 06:40:46,361 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 88 [2021-05-01 06:40:46,519 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2021-05-01 06:40:47,329 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2021-05-01 06:40:48,437 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2021-05-01 06:40:48,853 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2021-05-01 06:40:50,131 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2021-05-01 06:40:50,315 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 84 [2021-05-01 06:40:50,627 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2021-05-01 06:40:52,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:52,357 INFO L93 Difference]: Finished difference Result 2040 states and 2738 transitions. [2021-05-01 06:40:52,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-05-01 06:40:52,358 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 33 states have internal predecessors, (63), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 86 [2021-05-01 06:40:52,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:52,362 INFO L225 Difference]: With dead ends: 2040 [2021-05-01 06:40:52,362 INFO L226 Difference]: Without dead ends: 1950 [2021-05-01 06:40:52,364 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6281 ImplicationChecksByTransitivity, 10531.0ms TimeCoverageRelationStatistics Valid=2473, Invalid=17267, Unknown=0, NotChecked=0, Total=19740 [2021-05-01 06:40:52,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2021-05-01 06:40:52,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1447. [2021-05-01 06:40:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1447 states, 1437 states have (on average 1.3674321503131524) internal successors, (1965), 1438 states have internal predecessors, (1965), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 06:40:52,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 1974 transitions. [2021-05-01 06:40:52,977 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 1974 transitions. Word has length 86 [2021-05-01 06:40:52,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:52,978 INFO L480 AbstractCegarLoop]: Abstraction has 1447 states and 1974 transitions. [2021-05-01 06:40:52,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 33 states have internal predecessors, (63), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:52,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 1974 transitions. [2021-05-01 06:40:52,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-01 06:40:52,980 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:52,980 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:40:52,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-01 06:40:52,980 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:52,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:52,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1795960926, now seen corresponding path program 7 times [2021-05-01 06:40:52,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:52,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564724979] [2021-05-01 06:40:52,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:52,984 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:52,984 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:53,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:40:53,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:40:53,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:40:53,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:40:53,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:40:53,093 INFO L142 QuantifierPusher]: treesize reduction 38, result has 67.8 percent of original size [2021-05-01 06:40:53,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-05-01 06:40:53,138 INFO L142 QuantifierPusher]: treesize reduction 38, result has 72.1 percent of original size [2021-05-01 06:40:53,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-05-01 06:40:53,179 INFO L142 QuantifierPusher]: treesize reduction 9, result has 76.9 percent of original size [2021-05-01 06:40:53,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:40:53,196 INFO L142 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-05-01 06:40:53,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:40:53,212 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-05-01 06:40:53,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:40:53,224 INFO L142 QuantifierPusher]: treesize reduction 9, result has 60.9 percent of original size [2021-05-01 06:40:53,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:40:53,238 INFO L142 QuantifierPusher]: treesize reduction 25, result has 55.4 percent of original size [2021-05-01 06:40:53,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:53,264 INFO L142 QuantifierPusher]: treesize reduction 15, result has 57.1 percent of original size [2021-05-01 06:40:53,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:40:53,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:53,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:53,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:53,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:53,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:40:53,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:40:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:53,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:53,394 INFO L142 QuantifierPusher]: treesize reduction 6, result has 57.1 percent of original size [2021-05-01 06:40:53,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:40:53,411 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-05-01 06:40:53,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:40:53,430 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-05-01 06:40:53,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:40:53,431 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-05-01 06:40:53,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:40:53,432 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-05-01 06:40:53,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:40:53,433 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-05-01 06:40:53,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:40:53,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:40:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:53,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:53,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:53,437 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:53,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564724979] [2021-05-01 06:40:53,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1564724979] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:53,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:53,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-01 06:40:53,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890446286] [2021-05-01 06:40:53,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-01 06:40:53,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:53,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-01 06:40:53,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-05-01 06:40:53,438 INFO L87 Difference]: Start difference. First operand 1447 states and 1974 transitions. Second operand has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:54,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:54,987 INFO L93 Difference]: Finished difference Result 1472 states and 2002 transitions. [2021-05-01 06:40:54,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-01 06:40:54,988 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 86 [2021-05-01 06:40:54,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:54,991 INFO L225 Difference]: With dead ends: 1472 [2021-05-01 06:40:54,991 INFO L226 Difference]: Without dead ends: 1470 [2021-05-01 06:40:54,992 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 833.0ms TimeCoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2021-05-01 06:40:54,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-05-01 06:40:55,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1455. [2021-05-01 06:40:55,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1443 states have (on average 1.365904365904366) internal successors, (1971), 1444 states have internal predecessors, (1971), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-01 06:40:55,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1982 transitions. [2021-05-01 06:40:55,625 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1982 transitions. Word has length 86 [2021-05-01 06:40:55,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:55,625 INFO L480 AbstractCegarLoop]: Abstraction has 1455 states and 1982 transitions. [2021-05-01 06:40:55,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1982 transitions. [2021-05-01 06:40:55,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-01 06:40:55,627 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:55,627 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:40:55,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-01 06:40:55,627 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:55,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:55,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1530113686, now seen corresponding path program 8 times [2021-05-01 06:40:55,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:55,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545240974] [2021-05-01 06:40:55,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:55,631 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:55,632 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:55,665 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-05-01 06:40:55,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:55,674 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-05-01 06:40:55,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:55,675 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.2 percent of original size [2021-05-01 06:40:55,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:40:55,685 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-05-01 06:40:55,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:55,689 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.2 percent of original size [2021-05-01 06:40:55,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:40:55,690 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-05-01 06:40:55,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:55,694 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.2 percent of original size [2021-05-01 06:40:55,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:40:55,695 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-05-01 06:40:55,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:55,699 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.2 percent of original size [2021-05-01 06:40:55,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:40:55,700 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-05-01 06:40:55,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:55,705 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.2 percent of original size [2021-05-01 06:40:55,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:40:55,705 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-05-01 06:40:55,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:55,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:55,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:55,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:55,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:55,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:55,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:40:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:55,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:55,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:55,785 INFO L142 QuantifierPusher]: treesize reduction 22, result has 31.3 percent of original size [2021-05-01 06:40:55,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:55,797 INFO L142 QuantifierPusher]: treesize reduction 22, result has 52.2 percent of original size [2021-05-01 06:40:55,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:55,815 INFO L142 QuantifierPusher]: treesize reduction 26, result has 54.4 percent of original size [2021-05-01 06:40:55,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:55,839 INFO L142 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-05-01 06:40:55,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:55,855 INFO L142 QuantifierPusher]: treesize reduction 4, result has 88.2 percent of original size [2021-05-01 06:40:55,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:40:55,873 INFO L142 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-05-01 06:40:55,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:55,877 INFO L142 QuantifierPusher]: treesize reduction 21, result has 62.5 percent of original size [2021-05-01 06:40:55,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:55,910 INFO L142 QuantifierPusher]: treesize reduction 17, result has 74.6 percent of original size [2021-05-01 06:40:55,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:40:55,952 INFO L142 QuantifierPusher]: treesize reduction 25, result has 76.9 percent of original size [2021-05-01 06:40:55,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-01 06:40:55,999 INFO L142 QuantifierPusher]: treesize reduction 4, result has 88.9 percent of original size [2021-05-01 06:40:56,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:56,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:56,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:56,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:56,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:40:56,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:40:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:56,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:56,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:56,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-01 06:40:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:56,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:56,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:56,060 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:56,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545240974] [2021-05-01 06:40:56,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1545240974] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:56,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:56,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 06:40:56,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243977633] [2021-05-01 06:40:56,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-01 06:40:56,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:56,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-01 06:40:56,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-05-01 06:40:56,061 INFO L87 Difference]: Start difference. First operand 1455 states and 1982 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 16 states have internal predecessors, (42), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:57,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:57,613 INFO L93 Difference]: Finished difference Result 2668 states and 3646 transitions. [2021-05-01 06:40:57,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-01 06:40:57,614 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 16 states have internal predecessors, (42), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 94 [2021-05-01 06:40:57,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:57,616 INFO L225 Difference]: With dead ends: 2668 [2021-05-01 06:40:57,616 INFO L226 Difference]: Without dead ends: 1434 [2021-05-01 06:40:57,626 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 983.1ms TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2021-05-01 06:40:57,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2021-05-01 06:40:58,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1434. [2021-05-01 06:40:58,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1422 states have (on average 1.3677918424753868) internal successors, (1945), 1423 states have internal predecessors, (1945), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-01 06:40:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1956 transitions. [2021-05-01 06:40:58,211 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1956 transitions. Word has length 94 [2021-05-01 06:40:58,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:58,211 INFO L480 AbstractCegarLoop]: Abstraction has 1434 states and 1956 transitions. [2021-05-01 06:40:58,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 16 states have internal predecessors, (42), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:40:58,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1956 transitions. [2021-05-01 06:40:58,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-01 06:40:58,213 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:58,214 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:40:58,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-01 06:40:58,214 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:58,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:58,214 INFO L82 PathProgramCache]: Analyzing trace with hash -325083950, now seen corresponding path program 9 times [2021-05-01 06:40:58,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:58,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681642749] [2021-05-01 06:40:58,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:58,219 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:58,220 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:58,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:58,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:58,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:58,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:58,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:58,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:40:58,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:58,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:58,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:58,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:40:58,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:58,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:58,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:58,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:40:58,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:58,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:58,369 INFO L142 QuantifierPusher]: treesize reduction 23, result has 78.3 percent of original size [2021-05-01 06:40:58,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-01 06:40:58,402 INFO L142 QuantifierPusher]: treesize reduction 23, result has 75.5 percent of original size [2021-05-01 06:40:58,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 06:40:58,415 INFO L142 QuantifierPusher]: treesize reduction 41, result has 61.3 percent of original size [2021-05-01 06:40:58,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:40:58,446 INFO L142 QuantifierPusher]: treesize reduction 33, result has 69.2 percent of original size [2021-05-01 06:40:58,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 06:40:58,488 INFO L142 QuantifierPusher]: treesize reduction 31, result has 42.6 percent of original size [2021-05-01 06:40:58,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:40:58,503 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-05-01 06:40:58,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:58,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:58,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:58,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:58,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:58,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:58,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:40:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:58,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:58,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:58,573 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-05-01 06:40:58,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:40:58,589 INFO L142 QuantifierPusher]: treesize reduction 18, result has 51.4 percent of original size [2021-05-01 06:40:58,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:58,605 INFO L142 QuantifierPusher]: treesize reduction 22, result has 54.2 percent of original size [2021-05-01 06:40:58,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:58,631 INFO L142 QuantifierPusher]: treesize reduction 30, result has 50.8 percent of original size [2021-05-01 06:40:58,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:58,653 INFO L142 QuantifierPusher]: treesize reduction 30, result has 53.1 percent of original size [2021-05-01 06:40:58,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:40:58,701 INFO L142 QuantifierPusher]: treesize reduction 30, result has 50.8 percent of original size [2021-05-01 06:40:58,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:58,724 INFO L142 QuantifierPusher]: treesize reduction 59, result has 40.4 percent of original size [2021-05-01 06:40:58,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:58,752 INFO L142 QuantifierPusher]: treesize reduction 59, result has 42.2 percent of original size [2021-05-01 06:40:58,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:40:58,784 INFO L142 QuantifierPusher]: treesize reduction 59, result has 40.4 percent of original size [2021-05-01 06:40:58,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:58,815 INFO L142 QuantifierPusher]: treesize reduction 59, result has 35.9 percent of original size [2021-05-01 06:40:58,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:58,845 INFO L142 QuantifierPusher]: treesize reduction 18, result has 82.4 percent of original size [2021-05-01 06:40:58,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:40:58,888 INFO L142 QuantifierPusher]: treesize reduction 18, result has 82.4 percent of original size [2021-05-01 06:40:58,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:40:58,928 INFO L142 QuantifierPusher]: treesize reduction 18, result has 82.4 percent of original size [2021-05-01 06:40:58,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:40:58,967 INFO L142 QuantifierPusher]: treesize reduction 12, result has 73.3 percent of original size [2021-05-01 06:40:58,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:58,999 INFO L142 QuantifierPusher]: treesize reduction 12, result has 72.7 percent of original size [2021-05-01 06:40:58,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:59,029 INFO L142 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-05-01 06:40:59,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:59,062 INFO L142 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size [2021-05-01 06:40:59,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:59,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:59,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:40:59,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:59,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:40:59,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:59,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:59,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:59,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:59,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:59,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:59,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:40:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:59,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:59,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:59,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-01 06:40:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:59,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:59,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:59,212 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:59,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681642749] [2021-05-01 06:40:59,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [681642749] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:59,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:59,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-05-01 06:40:59,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331673141] [2021-05-01 06:40:59,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-01 06:40:59,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:59,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-01 06:40:59,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2021-05-01 06:40:59,214 INFO L87 Difference]: Start difference. First operand 1434 states and 1956 transitions. Second operand has 32 states, 32 states have (on average 1.84375) internal successors, (59), 30 states have internal predecessors, (59), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:41:04,285 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2021-05-01 06:41:05,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:05,832 INFO L93 Difference]: Finished difference Result 1922 states and 2542 transitions. [2021-05-01 06:41:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-01 06:41:05,833 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.84375) internal successors, (59), 30 states have internal predecessors, (59), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 94 [2021-05-01 06:41:05,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:05,836 INFO L225 Difference]: With dead ends: 1922 [2021-05-01 06:41:05,836 INFO L226 Difference]: Without dead ends: 1689 [2021-05-01 06:41:05,838 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2912 ImplicationChecksByTransitivity, 5586.2ms TimeCoverageRelationStatistics Valid=1429, Invalid=8671, Unknown=0, NotChecked=0, Total=10100 [2021-05-01 06:41:05,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2021-05-01 06:41:06,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1303. [2021-05-01 06:41:06,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 1291 states have (on average 1.372579395817196) internal successors, (1772), 1292 states have internal predecessors, (1772), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-01 06:41:06,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1783 transitions. [2021-05-01 06:41:06,413 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1783 transitions. Word has length 94 [2021-05-01 06:41:06,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:06,413 INFO L480 AbstractCegarLoop]: Abstraction has 1303 states and 1783 transitions. [2021-05-01 06:41:06,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.84375) internal successors, (59), 30 states have internal predecessors, (59), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:41:06,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1783 transitions. [2021-05-01 06:41:06,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-01 06:41:06,415 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:06,415 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:41:06,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-01 06:41:06,415 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:06,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:06,415 INFO L82 PathProgramCache]: Analyzing trace with hash 550935056, now seen corresponding path program 10 times [2021-05-01 06:41:06,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:06,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275250699] [2021-05-01 06:41:06,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:06,418 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:06,419 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:06,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:06,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:41:06,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:06,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:41:06,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:06,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:41:06,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:06,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:41:06,502 INFO L142 QuantifierPusher]: treesize reduction 49, result has 57.0 percent of original size [2021-05-01 06:41:06,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:41:06,532 INFO L142 QuantifierPusher]: treesize reduction 51, result has 64.1 percent of original size [2021-05-01 06:41:06,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-05-01 06:41:06,570 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.9 percent of original size [2021-05-01 06:41:06,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:41:06,602 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.8 percent of original size [2021-05-01 06:41:06,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:41:06,614 INFO L142 QuantifierPusher]: treesize reduction 16, result has 70.9 percent of original size [2021-05-01 06:41:06,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:41:06,636 INFO L142 QuantifierPusher]: treesize reduction 16, result has 59.0 percent of original size [2021-05-01 06:41:06,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:41:06,651 INFO L142 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-05-01 06:41:06,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:41:06,652 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-05-01 06:41:06,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:41:06,664 INFO L142 QuantifierPusher]: treesize reduction 9, result has 60.9 percent of original size [2021-05-01 06:41:06,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:41:06,678 INFO L142 QuantifierPusher]: treesize reduction 10, result has 67.7 percent of original size [2021-05-01 06:41:06,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:41:06,695 INFO L142 QuantifierPusher]: treesize reduction 25, result has 55.4 percent of original size [2021-05-01 06:41:06,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:41:06,722 INFO L142 QuantifierPusher]: treesize reduction 15, result has 57.1 percent of original size [2021-05-01 06:41:06,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:41:06,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:06,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:06,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:06,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:06,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:06,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:06,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:06,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:06,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:41:06,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:41:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:06,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:06,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:06,843 INFO L142 QuantifierPusher]: treesize reduction 6, result has 57.1 percent of original size [2021-05-01 06:41:06,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:41:06,861 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-05-01 06:41:06,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:41:06,883 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-05-01 06:41:06,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:41:06,884 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-05-01 06:41:06,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:41:06,885 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-05-01 06:41:06,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:41:06,886 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-05-01 06:41:06,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:41:06,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:41:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:06,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:06,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:06,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-01 06:41:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:06,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:06,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:06,892 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:06,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275250699] [2021-05-01 06:41:06,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1275250699] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:06,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:06,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-01 06:41:06,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480572268] [2021-05-01 06:41:06,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-01 06:41:06,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:06,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-01 06:41:06,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-05-01 06:41:06,894 INFO L87 Difference]: Start difference. First operand 1303 states and 1783 transitions. Second operand has 21 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 06:41:08,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:08,487 INFO L93 Difference]: Finished difference Result 1324 states and 1806 transitions. [2021-05-01 06:41:08,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-01 06:41:08,488 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 94 [2021-05-01 06:41:08,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:08,490 INFO L225 Difference]: With dead ends: 1324 [2021-05-01 06:41:08,490 INFO L226 Difference]: Without dead ends: 1322 [2021-05-01 06:41:08,490 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 924.2ms TimeCoverageRelationStatistics Valid=220, Invalid=1340, Unknown=0, NotChecked=0, Total=1560 [2021-05-01 06:41:08,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2021-05-01 06:41:09,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1311. [2021-05-01 06:41:09,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 1297 states have (on average 1.3708558211256747) internal successors, (1778), 1298 states have internal predecessors, (1778), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-01 06:41:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1791 transitions. [2021-05-01 06:41:09,063 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1791 transitions. Word has length 94 [2021-05-01 06:41:09,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:09,063 INFO L480 AbstractCegarLoop]: Abstraction has 1311 states and 1791 transitions. [2021-05-01 06:41:09,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 06:41:09,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1791 transitions. [2021-05-01 06:41:09,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-05-01 06:41:09,066 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:09,066 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:41:09,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-01 06:41:09,066 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:09,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:09,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1709954300, now seen corresponding path program 11 times [2021-05-01 06:41:09,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:09,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615827705] [2021-05-01 06:41:09,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:09,070 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:09,071 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:09,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:41:09,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:41:09,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:41:09,141 INFO L142 QuantifierPusher]: treesize reduction 18, result has 80.6 percent of original size [2021-05-01 06:41:09,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 06:41:09,176 INFO L142 QuantifierPusher]: treesize reduction 18, result has 82.7 percent of original size [2021-05-01 06:41:09,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 06:41:09,214 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.8 percent of original size [2021-05-01 06:41:09,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:41:09,253 INFO L142 QuantifierPusher]: treesize reduction 10, result has 79.2 percent of original size [2021-05-01 06:41:09,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:41:09,265 INFO L142 QuantifierPusher]: treesize reduction 57, result has 57.8 percent of original size [2021-05-01 06:41:09,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-05-01 06:41:09,304 INFO L142 QuantifierPusher]: treesize reduction 57, result has 55.5 percent of original size [2021-05-01 06:41:09,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 06:41:09,321 INFO L142 QuantifierPusher]: treesize reduction 38, result has 56.3 percent of original size [2021-05-01 06:41:09,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:41:09,361 INFO L142 QuantifierPusher]: treesize reduction 39, result has 58.1 percent of original size [2021-05-01 06:41:09,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:41:09,401 INFO L142 QuantifierPusher]: treesize reduction 47, result has 24.2 percent of original size [2021-05-01 06:41:09,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:41:09,403 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-05-01 06:41:09,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:41:09,417 INFO L142 QuantifierPusher]: treesize reduction 9, result has 60.9 percent of original size [2021-05-01 06:41:09,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:41:09,432 INFO L142 QuantifierPusher]: treesize reduction 19, result has 50.0 percent of original size [2021-05-01 06:41:09,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:41:09,451 INFO L142 QuantifierPusher]: treesize reduction 19, result has 50.0 percent of original size [2021-05-01 06:41:09,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:41:09,472 INFO L142 QuantifierPusher]: treesize reduction 44, result has 51.6 percent of original size [2021-05-01 06:41:09,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:41:09,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:09,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:09,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:09,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:09,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:09,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:41:09,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:41:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:09,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:09,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:41:09,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:41:09,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:41:09,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:41:09,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:41:09,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:41:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:09,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:09,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-01 06:41:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:09,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:09,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-01 06:41:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:09,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:09,622 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:09,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615827705] [2021-05-01 06:41:09,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [615827705] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:09,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:09,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-01 06:41:09,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508446943] [2021-05-01 06:41:09,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-01 06:41:09,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:09,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-01 06:41:09,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-05-01 06:41:09,623 INFO L87 Difference]: Start difference. First operand 1311 states and 1791 transitions. Second operand has 21 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-01 06:41:11,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:11,270 INFO L93 Difference]: Finished difference Result 1328 states and 1809 transitions. [2021-05-01 06:41:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-01 06:41:11,270 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 102 [2021-05-01 06:41:11,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:11,273 INFO L225 Difference]: With dead ends: 1328 [2021-05-01 06:41:11,273 INFO L226 Difference]: Without dead ends: 1326 [2021-05-01 06:41:11,274 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1064.0ms TimeCoverageRelationStatistics Valid=257, Invalid=1549, Unknown=0, NotChecked=0, Total=1806 [2021-05-01 06:41:11,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2021-05-01 06:41:11,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1319. [2021-05-01 06:41:11,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1303 states have (on average 1.3691481197237145) internal successors, (1784), 1304 states have internal predecessors, (1784), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-01 06:41:11,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1799 transitions. [2021-05-01 06:41:11,823 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1799 transitions. Word has length 102 [2021-05-01 06:41:11,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:11,824 INFO L480 AbstractCegarLoop]: Abstraction has 1319 states and 1799 transitions. [2021-05-01 06:41:11,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-01 06:41:11,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1799 transitions. [2021-05-01 06:41:11,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-01 06:41:11,826 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:11,826 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:41:11,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-01 06:41:11,826 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:11,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:11,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1442547704, now seen corresponding path program 12 times [2021-05-01 06:41:11,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:11,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329345866] [2021-05-01 06:41:11,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:11,840 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:11,841 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:11,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:11,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:11,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:41:11,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:41:11,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:41:11,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:41:11,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:41:11,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:41:11,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:41:11,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:41:11,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:41:11,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:41:11,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:11,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:11,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:11,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:41:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:11,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:11,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:12,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:41:12,015 INFO L142 QuantifierPusher]: treesize reduction 26, result has 54.4 percent of original size [2021-05-01 06:41:12,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:41:12,038 INFO L142 QuantifierPusher]: treesize reduction 26, result has 67.5 percent of original size [2021-05-01 06:41:12,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:41:12,071 INFO L142 QuantifierPusher]: treesize reduction 26, result has 66.2 percent of original size [2021-05-01 06:41:12,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:41:12,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:41:12,122 INFO L142 QuantifierPusher]: treesize reduction 17, result has 73.4 percent of original size [2021-05-01 06:41:12,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:41:12,158 INFO L142 QuantifierPusher]: treesize reduction 17, result has 75.7 percent of original size [2021-05-01 06:41:12,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:41:12,208 INFO L142 QuantifierPusher]: treesize reduction 17, result has 73.8 percent of original size [2021-05-01 06:41:12,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:41:12,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:12,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:41:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:41:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:12,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:12,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-01 06:41:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:12,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:12,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-01 06:41:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:12,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:12,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-01 06:41:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:12,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:12,299 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:12,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329345866] [2021-05-01 06:41:12,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1329345866] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:12,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:12,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 06:41:12,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822766006] [2021-05-01 06:41:12,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-01 06:41:12,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:12,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-01 06:41:12,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-05-01 06:41:12,300 INFO L87 Difference]: Start difference. First operand 1319 states and 1799 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 16 states have internal predecessors, (42), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:41:13,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:13,859 INFO L93 Difference]: Finished difference Result 2426 states and 3319 transitions. [2021-05-01 06:41:13,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-01 06:41:13,860 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 16 states have internal predecessors, (42), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 110 [2021-05-01 06:41:13,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:13,863 INFO L225 Difference]: With dead ends: 2426 [2021-05-01 06:41:13,863 INFO L226 Difference]: Without dead ends: 1308 [2021-05-01 06:41:13,864 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1050.2ms TimeCoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2021-05-01 06:41:13,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2021-05-01 06:41:14,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1304. [2021-05-01 06:41:14,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1288 states have (on average 1.3711180124223603) internal successors, (1766), 1289 states have internal predecessors, (1766), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-01 06:41:14,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1781 transitions. [2021-05-01 06:41:14,415 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1781 transitions. Word has length 110 [2021-05-01 06:41:14,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:14,416 INFO L480 AbstractCegarLoop]: Abstraction has 1304 states and 1781 transitions. [2021-05-01 06:41:14,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 16 states have internal predecessors, (42), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:41:14,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1781 transitions. [2021-05-01 06:41:14,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-01 06:41:14,417 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:14,417 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:41:14,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-01 06:41:14,418 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:14,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:14,418 INFO L82 PathProgramCache]: Analyzing trace with hash 302630006, now seen corresponding path program 13 times [2021-05-01 06:41:14,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:14,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227985593] [2021-05-01 06:41:14,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:14,421 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:14,422 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:14,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:14,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:14,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:14,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:14,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:41:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:14,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:14,526 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-05-01 06:41:14,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:41:14,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:41:14,547 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-05-01 06:41:14,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:41:14,568 INFO L142 QuantifierPusher]: treesize reduction 50, result has 45.1 percent of original size [2021-05-01 06:41:14,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:41:14,593 INFO L142 QuantifierPusher]: treesize reduction 50, result has 51.0 percent of original size [2021-05-01 06:41:14,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:41:14,623 INFO L142 QuantifierPusher]: treesize reduction 50, result has 45.1 percent of original size [2021-05-01 06:41:14,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:41:14,625 INFO L142 QuantifierPusher]: treesize reduction 63, result has 36.4 percent of original size [2021-05-01 06:41:14,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:41:14,650 INFO L142 QuantifierPusher]: treesize reduction 63, result has 42.7 percent of original size [2021-05-01 06:41:14,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:41:14,682 INFO L142 QuantifierPusher]: treesize reduction 63, result has 36.4 percent of original size [2021-05-01 06:41:14,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:41:14,683 INFO L142 QuantifierPusher]: treesize reduction 29, result has 40.8 percent of original size [2021-05-01 06:41:14,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:41:14,701 INFO L142 QuantifierPusher]: treesize reduction 29, result has 46.3 percent of original size [2021-05-01 06:41:14,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:41:14,723 INFO L142 QuantifierPusher]: treesize reduction 13, result has 79.7 percent of original size [2021-05-01 06:41:14,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:41:14,763 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-05-01 06:41:14,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:41:14,812 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-05-01 06:41:14,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:41:14,836 INFO L142 QuantifierPusher]: treesize reduction 8, result has 87.3 percent of original size [2021-05-01 06:41:14,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:41:14,881 INFO L142 QuantifierPusher]: treesize reduction 8, result has 88.1 percent of original size [2021-05-01 06:41:14,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:41:14,930 INFO L142 QuantifierPusher]: treesize reduction 12, result has 87.6 percent of original size [2021-05-01 06:41:14,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-05-01 06:41:14,990 INFO L142 QuantifierPusher]: treesize reduction 45, result has 53.6 percent of original size [2021-05-01 06:41:14,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:41:15,039 INFO L142 QuantifierPusher]: treesize reduction 45, result has 55.0 percent of original size [2021-05-01 06:41:15,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:41:15,086 INFO L142 QuantifierPusher]: treesize reduction 45, result has 53.6 percent of original size [2021-05-01 06:41:15,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:41:15,135 INFO L142 QuantifierPusher]: treesize reduction 21, result has 70.0 percent of original size [2021-05-01 06:41:15,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:41:15,185 INFO L142 QuantifierPusher]: treesize reduction 6, result has 92.0 percent of original size [2021-05-01 06:41:15,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:41:15,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:15,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:41:15,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:15,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:41:15,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:15,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:41:15,328 INFO L142 QuantifierPusher]: treesize reduction 4, result has 94.0 percent of original size [2021-05-01 06:41:15,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:41:15,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:15,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:41:15,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:15,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:41:15,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:15,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:15,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:15,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:15,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:15,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:15,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:41:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:15,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:15,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:15,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-01 06:41:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:15,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:15,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:15,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-01 06:41:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:15,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:15,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:15,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-01 06:41:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:15,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:15,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:15,469 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:15,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227985593] [2021-05-01 06:41:15,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1227985593] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:15,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:15,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-05-01 06:41:15,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775038236] [2021-05-01 06:41:15,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-01 06:41:15,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:15,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-01 06:41:15,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 06:41:15,470 INFO L87 Difference]: Start difference. First operand 1304 states and 1781 transitions. Second operand has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 31 states have internal predecessors, (63), 3 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:41:21,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:21,153 INFO L93 Difference]: Finished difference Result 2662 states and 3620 transitions. [2021-05-01 06:41:21,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-01 06:41:21,154 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 31 states have internal predecessors, (63), 3 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 110 [2021-05-01 06:41:21,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:21,158 INFO L225 Difference]: With dead ends: 2662 [2021-05-01 06:41:21,158 INFO L226 Difference]: Without dead ends: 2516 [2021-05-01 06:41:21,159 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2451 ImplicationChecksByTransitivity, 4444.6ms TimeCoverageRelationStatistics Valid=1141, Invalid=7415, Unknown=0, NotChecked=0, Total=8556 [2021-05-01 06:41:21,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2021-05-01 06:41:21,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 1660. [2021-05-01 06:41:21,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1660 states, 1644 states have (on average 1.3509732360097324) internal successors, (2221), 1645 states have internal predecessors, (2221), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-01 06:41:21,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2236 transitions. [2021-05-01 06:41:21,905 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2236 transitions. Word has length 110 [2021-05-01 06:41:21,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:21,905 INFO L480 AbstractCegarLoop]: Abstraction has 1660 states and 2236 transitions. [2021-05-01 06:41:21,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 31 states have internal predecessors, (63), 3 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:41:21,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2236 transitions. [2021-05-01 06:41:21,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-01 06:41:21,907 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:21,907 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:41:21,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-01 06:41:21,907 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:21,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:21,907 INFO L82 PathProgramCache]: Analyzing trace with hash 2044627514, now seen corresponding path program 14 times [2021-05-01 06:41:21,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:21,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105856880] [2021-05-01 06:41:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:21,911 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:21,912 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:21,952 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-05-01 06:41:21,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:41:21,960 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-05-01 06:41:21,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:41:21,961 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.2 percent of original size [2021-05-01 06:41:21,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:41:21,972 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-05-01 06:41:21,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:41:21,976 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.2 percent of original size [2021-05-01 06:41:21,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:41:21,977 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-05-01 06:41:21,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:41:21,981 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.2 percent of original size [2021-05-01 06:41:21,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:41:21,982 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-05-01 06:41:21,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:41:21,986 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.2 percent of original size [2021-05-01 06:41:21,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:41:21,987 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-05-01 06:41:21,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:41:21,996 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.2 percent of original size [2021-05-01 06:41:21,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:41:21,997 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-05-01 06:41:21,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:41:22,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:22,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:22,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:22,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:22,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:41:22,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:41:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:22,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:22,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:22,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:22,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:41:22,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:22,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:22,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:22,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:41:22,141 INFO L142 QuantifierPusher]: treesize reduction 80, result has 41.2 percent of original size [2021-05-01 06:41:22,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:41:22,178 INFO L142 QuantifierPusher]: treesize reduction 80, result has 45.6 percent of original size [2021-05-01 06:41:22,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 06:41:22,222 INFO L142 QuantifierPusher]: treesize reduction 80, result has 41.2 percent of original size [2021-05-01 06:41:22,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:41:22,224 INFO L142 QuantifierPusher]: treesize reduction 74, result has 58.4 percent of original size [2021-05-01 06:41:22,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 06:41:22,282 INFO L142 QuantifierPusher]: treesize reduction 81, result has 60.5 percent of original size [2021-05-01 06:41:22,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-05-01 06:41:22,344 INFO L142 QuantifierPusher]: treesize reduction 35, result has 77.7 percent of original size [2021-05-01 06:41:22,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-05-01 06:41:22,384 INFO L142 QuantifierPusher]: treesize reduction 35, result has 77.7 percent of original size [2021-05-01 06:41:22,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-05-01 06:41:22,459 INFO L142 QuantifierPusher]: treesize reduction 35, result has 77.7 percent of original size [2021-05-01 06:41:22,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-05-01 06:41:22,503 INFO L142 QuantifierPusher]: treesize reduction 29, result has 69.1 percent of original size [2021-05-01 06:41:22,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:41:22,536 INFO L142 QuantifierPusher]: treesize reduction 29, result has 69.1 percent of original size [2021-05-01 06:41:22,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:41:22,574 INFO L142 QuantifierPusher]: treesize reduction 17, result has 80.5 percent of original size [2021-05-01 06:41:22,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-05-01 06:41:22,629 INFO L142 QuantifierPusher]: treesize reduction 26, result has 76.1 percent of original size [2021-05-01 06:41:22,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-01 06:41:22,701 INFO L142 QuantifierPusher]: treesize reduction 23, result has 81.6 percent of original size [2021-05-01 06:41:22,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-05-01 06:41:22,769 INFO L142 QuantifierPusher]: treesize reduction 11, result has 86.9 percent of original size [2021-05-01 06:41:22,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:41:22,828 INFO L142 QuantifierPusher]: treesize reduction 11, result has 87.4 percent of original size [2021-05-01 06:41:22,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 06:41:22,889 INFO L142 QuantifierPusher]: treesize reduction 42, result has 68.7 percent of original size [2021-05-01 06:41:22,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-05-01 06:41:22,936 INFO L142 QuantifierPusher]: treesize reduction 4, result has 93.8 percent of original size [2021-05-01 06:41:22,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:41:22,980 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.2 percent of original size [2021-05-01 06:41:22,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:41:23,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:23,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:41:23,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:41:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:23,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:23,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:23,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-01 06:41:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:23,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:23,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:23,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-01 06:41:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:23,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:23,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:23,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-01 06:41:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:23,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:23,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:23,028 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:23,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105856880] [2021-05-01 06:41:23,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [105856880] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:23,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:23,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-01 06:41:23,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068377568] [2021-05-01 06:41:23,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-01 06:41:23,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:23,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-01 06:41:23,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2021-05-01 06:41:23,029 INFO L87 Difference]: Start difference. First operand 1660 states and 2236 transitions. Second operand has 27 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 25 states have internal predecessors, (51), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:41:24,302 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 72 [2021-05-01 06:41:25,014 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2021-05-01 06:41:25,174 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2021-05-01 06:41:25,477 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 91 [2021-05-01 06:41:25,636 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2021-05-01 06:41:26,307 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2021-05-01 06:41:26,484 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 86 [2021-05-01 06:41:28,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:28,120 INFO L93 Difference]: Finished difference Result 3374 states and 4545 transitions. [2021-05-01 06:41:28,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-01 06:41:28,121 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 25 states have internal predecessors, (51), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 110 [2021-05-01 06:41:28,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:28,125 INFO L225 Difference]: With dead ends: 3374 [2021-05-01 06:41:28,125 INFO L226 Difference]: Without dead ends: 2007 [2021-05-01 06:41:28,127 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 3710.7ms TimeCoverageRelationStatistics Valid=439, Invalid=2531, Unknown=0, NotChecked=0, Total=2970 [2021-05-01 06:41:28,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2021-05-01 06:41:28,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1798. [2021-05-01 06:41:28,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1782 states have (on average 1.3468013468013469) internal successors, (2400), 1783 states have internal predecessors, (2400), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-01 06:41:28,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2415 transitions. [2021-05-01 06:41:28,927 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2415 transitions. Word has length 110 [2021-05-01 06:41:28,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:28,927 INFO L480 AbstractCegarLoop]: Abstraction has 1798 states and 2415 transitions. [2021-05-01 06:41:28,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 25 states have internal predecessors, (51), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:41:28,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2415 transitions. [2021-05-01 06:41:28,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-01 06:41:28,929 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:28,929 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:41:28,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-01 06:41:28,929 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:28,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:28,930 INFO L82 PathProgramCache]: Analyzing trace with hash -2083879500, now seen corresponding path program 15 times [2021-05-01 06:41:28,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:28,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768486612] [2021-05-01 06:41:28,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:28,934 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:28,935 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:28,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:28,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:28,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:28,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:28,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:28,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:41:28,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:28,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:41:28,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:28,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:41:28,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:28,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:41:28,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:28,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:41:28,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:28,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:41:28,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:28,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:41:28,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:28,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:41:28,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:28,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:41:28,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:28,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:41:29,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:29,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:29,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:29,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:41:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:29,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:29,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:41:29,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:29,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:41:29,156 INFO L142 QuantifierPusher]: treesize reduction 66, result has 49.2 percent of original size [2021-05-01 06:41:29,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 06:41:29,193 INFO L142 QuantifierPusher]: treesize reduction 86, result has 46.6 percent of original size [2021-05-01 06:41:29,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 06:41:29,233 INFO L142 QuantifierPusher]: treesize reduction 90, result has 41.6 percent of original size [2021-05-01 06:41:29,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 06:41:29,235 INFO L142 QuantifierPusher]: treesize reduction 60, result has 66.1 percent of original size [2021-05-01 06:41:29,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 06:41:29,279 INFO L142 QuantifierPusher]: treesize reduction 62, result has 67.4 percent of original size [2021-05-01 06:41:29,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-05-01 06:41:29,331 INFO L142 QuantifierPusher]: treesize reduction 60, result has 66.1 percent of original size [2021-05-01 06:41:29,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 06:41:29,334 INFO L142 QuantifierPusher]: treesize reduction 52, result has 68.1 percent of original size [2021-05-01 06:41:29,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 06:41:29,379 INFO L142 QuantifierPusher]: treesize reduction 52, result has 68.1 percent of original size [2021-05-01 06:41:29,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 06:41:29,425 INFO L142 QuantifierPusher]: treesize reduction 52, result has 68.1 percent of original size [2021-05-01 06:41:29,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 06:41:29,470 INFO L142 QuantifierPusher]: treesize reduction 46, result has 54.0 percent of original size [2021-05-01 06:41:29,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:41:29,501 INFO L142 QuantifierPusher]: treesize reduction 46, result has 54.0 percent of original size [2021-05-01 06:41:29,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:41:29,533 INFO L142 QuantifierPusher]: treesize reduction 102, result has 41.4 percent of original size [2021-05-01 06:41:29,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:41:29,577 INFO L142 QuantifierPusher]: treesize reduction 101, result has 50.0 percent of original size [2021-05-01 06:41:29,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 06:41:29,629 INFO L142 QuantifierPusher]: treesize reduction 95, result has 43.5 percent of original size [2021-05-01 06:41:29,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:41:29,684 INFO L142 QuantifierPusher]: treesize reduction 95, result has 44.1 percent of original size [2021-05-01 06:41:29,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 06:41:29,741 INFO L142 QuantifierPusher]: treesize reduction 95, result has 43.5 percent of original size [2021-05-01 06:41:29,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:41:29,798 INFO L142 QuantifierPusher]: treesize reduction 73, result has 46.3 percent of original size [2021-05-01 06:41:29,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:41:29,852 INFO L142 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-05-01 06:41:29,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:41:29,885 INFO L142 QuantifierPusher]: treesize reduction 6, result has 93.9 percent of original size [2021-05-01 06:41:29,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-05-01 06:41:29,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 06:41:29,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:41:29,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:41:30,034 INFO L142 QuantifierPusher]: treesize reduction 5, result has 91.4 percent of original size [2021-05-01 06:41:30,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:41:30,077 INFO L142 QuantifierPusher]: treesize reduction 69, result has 36.1 percent of original size [2021-05-01 06:41:30,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:41:30,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:30,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:30,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:30,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:30,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:41:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:30,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:30,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:30,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-01 06:41:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:30,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:30,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:30,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-01 06:41:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:30,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:30,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:30,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-01 06:41:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:30,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:30,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:30,122 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:30,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768486612] [2021-05-01 06:41:30,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1768486612] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:30,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:30,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-05-01 06:41:30,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261338469] [2021-05-01 06:41:30,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-01 06:41:30,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:30,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-01 06:41:30,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2021-05-01 06:41:30,123 INFO L87 Difference]: Start difference. First operand 1798 states and 2415 transitions. Second operand has 32 states, 32 states have (on average 1.84375) internal successors, (59), 30 states have internal predecessors, (59), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:41:30,933 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2021-05-01 06:41:31,638 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 96 [2021-05-01 06:41:31,932 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2021-05-01 06:41:32,066 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2021-05-01 06:41:33,470 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2021-05-01 06:41:33,619 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2021-05-01 06:41:33,783 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2021-05-01 06:41:34,335 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2021-05-01 06:41:34,624 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2021-05-01 06:41:35,620 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2021-05-01 06:41:36,916 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2021-05-01 06:41:37,497 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2021-05-01 06:41:37,941 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 82 [2021-05-01 06:41:38,425 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2021-05-01 06:41:39,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:39,353 INFO L93 Difference]: Finished difference Result 2382 states and 3136 transitions. [2021-05-01 06:41:39,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-01 06:41:39,354 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.84375) internal successors, (59), 30 states have internal predecessors, (59), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 110 [2021-05-01 06:41:39,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:39,358 INFO L225 Difference]: With dead ends: 2382 [2021-05-01 06:41:39,358 INFO L226 Difference]: Without dead ends: 2153 [2021-05-01 06:41:39,365 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2270 ImplicationChecksByTransitivity, 7473.9ms TimeCoverageRelationStatistics Valid=1406, Invalid=7336, Unknown=0, NotChecked=0, Total=8742 [2021-05-01 06:41:39,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2021-05-01 06:41:40,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 1914. [2021-05-01 06:41:40,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1898 states have (on average 1.3461538461538463) internal successors, (2555), 1899 states have internal predecessors, (2555), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-01 06:41:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2570 transitions. [2021-05-01 06:41:40,280 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2570 transitions. Word has length 110 [2021-05-01 06:41:40,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:40,280 INFO L480 AbstractCegarLoop]: Abstraction has 1914 states and 2570 transitions. [2021-05-01 06:41:40,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.84375) internal successors, (59), 30 states have internal predecessors, (59), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:41:40,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2570 transitions. [2021-05-01 06:41:40,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-01 06:41:40,282 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:40,282 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:41:40,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-01 06:41:40,282 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:40,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:40,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1400975308, now seen corresponding path program 16 times [2021-05-01 06:41:40,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:40,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539705984] [2021-05-01 06:41:40,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:40,287 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:40,288 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:40,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:40,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:40,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:40,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:40,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:40,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:40,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:40,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:41:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:40,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:40,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:40,384 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-05-01 06:41:40,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:41:40,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:40,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:41:40,402 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-05-01 06:41:40,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:41:40,421 INFO L142 QuantifierPusher]: treesize reduction 58, result has 41.4 percent of original size [2021-05-01 06:41:40,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:41:40,444 INFO L142 QuantifierPusher]: treesize reduction 58, result has 47.3 percent of original size [2021-05-01 06:41:40,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:41:40,472 INFO L142 QuantifierPusher]: treesize reduction 58, result has 41.4 percent of original size [2021-05-01 06:41:40,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:41:40,473 INFO L142 QuantifierPusher]: treesize reduction 30, result has 40.0 percent of original size [2021-05-01 06:41:40,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:41:40,488 INFO L142 QuantifierPusher]: treesize reduction 30, result has 40.0 percent of original size [2021-05-01 06:41:40,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:41:40,504 INFO L142 QuantifierPusher]: treesize reduction 30, result has 45.5 percent of original size [2021-05-01 06:41:40,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:41:40,523 INFO L142 QuantifierPusher]: treesize reduction 70, result has 30.7 percent of original size [2021-05-01 06:41:40,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:41:40,553 INFO L142 QuantifierPusher]: treesize reduction 43, result has 32.8 percent of original size [2021-05-01 06:41:40,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:41:40,576 INFO L142 QuantifierPusher]: treesize reduction 42, result has 33.3 percent of original size [2021-05-01 06:41:40,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:41:40,598 INFO L142 QuantifierPusher]: treesize reduction 43, result has 53.8 percent of original size [2021-05-01 06:41:40,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:41:40,640 INFO L142 QuantifierPusher]: treesize reduction 43, result has 55.7 percent of original size [2021-05-01 06:41:40,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:41:40,682 INFO L142 QuantifierPusher]: treesize reduction 43, result has 54.7 percent of original size [2021-05-01 06:41:40,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:41:40,726 INFO L142 QuantifierPusher]: treesize reduction 46, result has 51.6 percent of original size [2021-05-01 06:41:40,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:41:40,770 INFO L142 QuantifierPusher]: treesize reduction 45, result has 52.1 percent of original size [2021-05-01 06:41:40,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:41:40,816 INFO L142 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-05-01 06:41:40,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:41:40,871 INFO L142 QuantifierPusher]: treesize reduction 24, result has 59.3 percent of original size [2021-05-01 06:41:40,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:41:40,907 INFO L142 QuantifierPusher]: treesize reduction 24, result has 58.6 percent of original size [2021-05-01 06:41:40,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:41:40,934 INFO L142 QuantifierPusher]: treesize reduction 16, result has 82.4 percent of original size [2021-05-01 06:41:40,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 06:41:40,992 INFO L142 QuantifierPusher]: treesize reduction 16, result has 88.1 percent of original size [2021-05-01 06:41:40,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-05-01 06:41:41,063 INFO L142 QuantifierPusher]: treesize reduction 49, result has 60.5 percent of original size [2021-05-01 06:41:41,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 06:41:41,115 INFO L142 QuantifierPusher]: treesize reduction 42, result has 63.8 percent of original size [2021-05-01 06:41:41,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 06:41:41,174 INFO L142 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-05-01 06:41:41,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:41:41,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:41,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:41:41,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:41,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:41:41,259 INFO L142 QuantifierPusher]: treesize reduction 6, result has 45.5 percent of original size [2021-05-01 06:41:41,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:41,272 INFO L142 QuantifierPusher]: treesize reduction 6, result has 45.5 percent of original size [2021-05-01 06:41:41,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:41,285 INFO L142 QuantifierPusher]: treesize reduction 6, result has 45.5 percent of original size [2021-05-01 06:41:41,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:41,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:41,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:41,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:41,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:41,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:41,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:41,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:41,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:41,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:41:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:41,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:41,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:41,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-01 06:41:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:41,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:41,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:41,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-01 06:41:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:41,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:41,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:41,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-01 06:41:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:41,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:41,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:41,354 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:41,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539705984] [2021-05-01 06:41:41,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [539705984] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:41,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:41,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-05-01 06:41:41,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396086842] [2021-05-01 06:41:41,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-01 06:41:41,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:41,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-01 06:41:41,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2021-05-01 06:41:41,355 INFO L87 Difference]: Start difference. First operand 1914 states and 2570 transitions. Second operand has 32 states, 32 states have (on average 2.09375) internal successors, (67), 30 states have internal predecessors, (67), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 06:41:48,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:48,405 INFO L93 Difference]: Finished difference Result 3701 states and 4973 transitions. [2021-05-01 06:41:48,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-01 06:41:48,406 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 30 states have internal predecessors, (67), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 110 [2021-05-01 06:41:48,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:48,412 INFO L225 Difference]: With dead ends: 3701 [2021-05-01 06:41:48,412 INFO L226 Difference]: Without dead ends: 3609 [2021-05-01 06:41:48,413 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2773 ImplicationChecksByTransitivity, 4932.5ms TimeCoverageRelationStatistics Valid=1520, Invalid=7792, Unknown=0, NotChecked=0, Total=9312 [2021-05-01 06:41:48,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3609 states. [2021-05-01 06:41:49,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3609 to 2173. [2021-05-01 06:41:49,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2173 states, 2157 states have (on average 1.344923504867872) internal successors, (2901), 2158 states have internal predecessors, (2901), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-01 06:41:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 2916 transitions. [2021-05-01 06:41:49,485 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 2916 transitions. Word has length 110 [2021-05-01 06:41:49,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:49,485 INFO L480 AbstractCegarLoop]: Abstraction has 2173 states and 2916 transitions. [2021-05-01 06:41:49,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 30 states have internal predecessors, (67), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 06:41:49,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 2916 transitions. [2021-05-01 06:41:49,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-01 06:41:49,488 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:49,488 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:41:49,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-01 06:41:49,488 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:49,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:49,488 INFO L82 PathProgramCache]: Analyzing trace with hash -140058058, now seen corresponding path program 17 times [2021-05-01 06:41:49,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:49,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910024900] [2021-05-01 06:41:49,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:49,493 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:49,494 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:49,525 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-05-01 06:41:49,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:41:49,533 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-05-01 06:41:49,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:41:49,534 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:41:49,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:41:49,548 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:41:49,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:49,554 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:41:49,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:41:49,555 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:41:49,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:49,560 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:41:49,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:41:49,561 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:41:49,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:49,566 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:41:49,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:41:49,567 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:41:49,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:49,571 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:41:49,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:41:49,572 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:41:49,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:49,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:49,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:49,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:49,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:49,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:41:49,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:41:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:49,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:49,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:49,662 INFO L142 QuantifierPusher]: treesize reduction 24, result has 63.1 percent of original size [2021-05-01 06:41:49,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:41:49,702 INFO L142 QuantifierPusher]: treesize reduction 19, result has 76.3 percent of original size [2021-05-01 06:41:49,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:41:49,739 INFO L142 QuantifierPusher]: treesize reduction 27, result has 73.5 percent of original size [2021-05-01 06:41:49,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 06:41:49,781 INFO L142 QuantifierPusher]: treesize reduction 64, result has 52.2 percent of original size [2021-05-01 06:41:49,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-05-01 06:41:49,829 INFO L142 QuantifierPusher]: treesize reduction 64, result has 62.6 percent of original size [2021-05-01 06:41:49,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-05-01 06:41:49,903 INFO L142 QuantifierPusher]: treesize reduction 64, result has 59.0 percent of original size [2021-05-01 06:41:49,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-05-01 06:41:49,962 INFO L142 QuantifierPusher]: treesize reduction 47, result has 61.8 percent of original size [2021-05-01 06:41:49,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 06:41:50,014 INFO L142 QuantifierPusher]: treesize reduction 108, result has 44.6 percent of original size [2021-05-01 06:41:50,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:41:50,071 INFO L142 QuantifierPusher]: treesize reduction 108, result has 45.5 percent of original size [2021-05-01 06:41:50,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-05-01 06:41:50,134 INFO L142 QuantifierPusher]: treesize reduction 108, result has 44.6 percent of original size [2021-05-01 06:41:50,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:41:50,197 INFO L142 QuantifierPusher]: treesize reduction 67, result has 56.5 percent of original size [2021-05-01 06:41:50,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:41:50,250 INFO L142 QuantifierPusher]: treesize reduction 67, result has 56.5 percent of original size [2021-05-01 06:41:50,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:41:50,296 INFO L142 QuantifierPusher]: treesize reduction 36, result has 56.6 percent of original size [2021-05-01 06:41:50,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:41:50,328 INFO L142 QuantifierPusher]: treesize reduction 36, result has 56.1 percent of original size [2021-05-01 06:41:50,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:41:50,360 INFO L142 QuantifierPusher]: treesize reduction 12, result has 81.3 percent of original size [2021-05-01 06:41:50,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:41:50,404 INFO L142 QuantifierPusher]: treesize reduction 12, result has 82.4 percent of original size [2021-05-01 06:41:50,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:41:50,452 INFO L142 QuantifierPusher]: treesize reduction 9, result has 90.2 percent of original size [2021-05-01 06:41:50,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-01 06:41:50,522 INFO L142 QuantifierPusher]: treesize reduction 5, result has 91.5 percent of original size [2021-05-01 06:41:50,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:41:50,569 INFO L142 QuantifierPusher]: treesize reduction 5, result has 92.1 percent of original size [2021-05-01 06:41:50,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-05-01 06:41:50,623 INFO L142 QuantifierPusher]: treesize reduction 5, result has 91.5 percent of original size [2021-05-01 06:41:50,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:41:50,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:50,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:41:50,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:50,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:41:50,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:50,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:41:50,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:41:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:50,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:50,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:50,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-01 06:41:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:50,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:50,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:50,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-01 06:41:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:50,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:50,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:50,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-01 06:41:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:50,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:50,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:50,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:50,720 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:50,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910024900] [2021-05-01 06:41:50,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1910024900] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:50,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:50,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-05-01 06:41:50,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977979388] [2021-05-01 06:41:50,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-01 06:41:50,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:50,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-01 06:41:50,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2021-05-01 06:41:50,721 INFO L87 Difference]: Start difference. First operand 2173 states and 2916 transitions. Second operand has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 27 states have internal predecessors, (52), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:41:51,764 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2021-05-01 06:41:51,928 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2021-05-01 06:41:52,333 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 73 [2021-05-01 06:41:52,502 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2021-05-01 06:41:52,786 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 103 [2021-05-01 06:41:53,174 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 111 [2021-05-01 06:41:53,503 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 111 [2021-05-01 06:41:53,693 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103 [2021-05-01 06:41:53,822 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2021-05-01 06:41:54,050 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2021-05-01 06:41:54,632 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 103 [2021-05-01 06:41:54,940 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2021-05-01 06:41:55,095 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2021-05-01 06:41:55,302 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2021-05-01 06:41:55,540 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2021-05-01 06:41:55,785 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2021-05-01 06:41:55,955 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-05-01 06:41:56,453 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2021-05-01 06:41:56,816 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 97 [2021-05-01 06:41:57,543 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2021-05-01 06:41:57,708 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 88 [2021-05-01 06:41:57,883 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2021-05-01 06:41:58,039 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 75 [2021-05-01 06:41:58,576 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2021-05-01 06:41:59,119 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2021-05-01 06:41:59,327 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2021-05-01 06:41:59,556 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 110 [2021-05-01 06:41:59,892 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 78 [2021-05-01 06:42:00,436 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2021-05-01 06:42:00,752 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 72 [2021-05-01 06:42:00,960 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 94 [2021-05-01 06:42:02,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:02,300 INFO L93 Difference]: Finished difference Result 3193 states and 4200 transitions. [2021-05-01 06:42:02,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-01 06:42:02,300 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 27 states have internal predecessors, (52), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 110 [2021-05-01 06:42:02,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:02,306 INFO L225 Difference]: With dead ends: 3193 [2021-05-01 06:42:02,306 INFO L226 Difference]: Without dead ends: 2766 [2021-05-01 06:42:02,307 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2505 ImplicationChecksByTransitivity, 9560.8ms TimeCoverageRelationStatistics Valid=1596, Invalid=7334, Unknown=0, NotChecked=0, Total=8930 [2021-05-01 06:42:02,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2021-05-01 06:42:03,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2411. [2021-05-01 06:42:03,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 2395 states have (on average 1.3453027139874738) internal successors, (3222), 2396 states have internal predecessors, (3222), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-01 06:42:03,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 3237 transitions. [2021-05-01 06:42:03,587 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 3237 transitions. Word has length 110 [2021-05-01 06:42:03,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:03,587 INFO L480 AbstractCegarLoop]: Abstraction has 2411 states and 3237 transitions. [2021-05-01 06:42:03,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 27 states have internal predecessors, (52), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:42:03,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 3237 transitions. [2021-05-01 06:42:03,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-01 06:42:03,590 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:03,590 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:42:03,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-01 06:42:03,590 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:03,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:03,590 INFO L82 PathProgramCache]: Analyzing trace with hash 994934070, now seen corresponding path program 18 times [2021-05-01 06:42:03,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:03,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295768467] [2021-05-01 06:42:03,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:03,594 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:03,598 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:03,645 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-05-01 06:42:03,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:42:03,653 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-05-01 06:42:03,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:42:03,654 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:42:03,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:42:03,665 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:42:03,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:42:03,670 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:42:03,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:42:03,671 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:42:03,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:42:03,676 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:42:03,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:42:03,677 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:42:03,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:42:03,682 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:42:03,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:42:03,683 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:42:03,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:42:03,688 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:42:03,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:42:03,689 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:42:03,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:42:03,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:03,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:03,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:03,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:03,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:42:03,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:42:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:03,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:03,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:42:03,765 INFO L142 QuantifierPusher]: treesize reduction 20, result has 58.3 percent of original size [2021-05-01 06:42:03,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:42:03,797 INFO L142 QuantifierPusher]: treesize reduction 19, result has 72.5 percent of original size [2021-05-01 06:42:03,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:42:03,829 INFO L142 QuantifierPusher]: treesize reduction 27, result has 75.2 percent of original size [2021-05-01 06:42:03,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 06:42:03,867 INFO L142 QuantifierPusher]: treesize reduction 4, result has 88.2 percent of original size [2021-05-01 06:42:03,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:42:03,887 INFO L142 QuantifierPusher]: treesize reduction 4, result has 87.9 percent of original size [2021-05-01 06:42:03,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:42:03,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:03,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:42:03,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:42:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:03,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:03,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:03,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-01 06:42:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:03,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:03,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:03,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-01 06:42:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:03,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:03,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:03,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-01 06:42:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:03,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:03,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:03,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:03,934 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:03,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295768467] [2021-05-01 06:42:03,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1295768467] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:03,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:03,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-01 06:42:03,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540140279] [2021-05-01 06:42:03,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-01 06:42:03,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:03,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-01 06:42:03,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-05-01 06:42:03,935 INFO L87 Difference]: Start difference. First operand 2411 states and 3237 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:42:05,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:05,602 INFO L93 Difference]: Finished difference Result 4077 states and 5492 transitions. [2021-05-01 06:42:05,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-01 06:42:05,603 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 110 [2021-05-01 06:42:05,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:05,606 INFO L225 Difference]: With dead ends: 4077 [2021-05-01 06:42:05,606 INFO L226 Difference]: Without dead ends: 2251 [2021-05-01 06:42:05,609 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 548.5ms TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-05-01 06:42:05,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2021-05-01 06:42:06,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 2251. [2021-05-01 06:42:06,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2235 states have (on average 1.3498881431767338) internal successors, (3017), 2236 states have internal predecessors, (3017), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-01 06:42:06,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3032 transitions. [2021-05-01 06:42:06,772 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3032 transitions. Word has length 110 [2021-05-01 06:42:06,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:06,772 INFO L480 AbstractCegarLoop]: Abstraction has 2251 states and 3032 transitions. [2021-05-01 06:42:06,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:42:06,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3032 transitions. [2021-05-01 06:42:06,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-01 06:42:06,774 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:06,774 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:42:06,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-01 06:42:06,775 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:06,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:06,775 INFO L82 PathProgramCache]: Analyzing trace with hash 165615032, now seen corresponding path program 19 times [2021-05-01 06:42:06,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:06,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668904521] [2021-05-01 06:42:06,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:06,778 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:06,779 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:06,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:06,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:06,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:06,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:06,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:06,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:06,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:06,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:42:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:06,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:06,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:06,863 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-05-01 06:42:06,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:42:06,873 INFO L142 QuantifierPusher]: treesize reduction 36, result has 44.6 percent of original size [2021-05-01 06:42:06,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:42:06,887 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.8 percent of original size [2021-05-01 06:42:06,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:42:06,895 INFO L142 QuantifierPusher]: treesize reduction 22, result has 48.8 percent of original size [2021-05-01 06:42:06,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:42:06,910 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.7 percent of original size [2021-05-01 06:42:06,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:42:06,929 INFO L142 QuantifierPusher]: treesize reduction 22, result has 74.1 percent of original size [2021-05-01 06:42:06,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:42:06,961 INFO L142 QuantifierPusher]: treesize reduction 40, result has 57.4 percent of original size [2021-05-01 06:42:06,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:42:06,984 INFO L142 QuantifierPusher]: treesize reduction 40, result has 48.7 percent of original size [2021-05-01 06:42:06,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:42:07,009 INFO L142 QuantifierPusher]: treesize reduction 24, result has 73.6 percent of original size [2021-05-01 06:42:07,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 06:42:07,053 INFO L142 QuantifierPusher]: treesize reduction 40, result has 59.6 percent of original size [2021-05-01 06:42:07,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:42:07,084 INFO L142 QuantifierPusher]: treesize reduction 40, result has 59.6 percent of original size [2021-05-01 06:42:07,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:42:07,117 INFO L142 QuantifierPusher]: treesize reduction 40, result has 59.6 percent of original size [2021-05-01 06:42:07,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:42:07,150 INFO L142 QuantifierPusher]: treesize reduction 24, result has 59.3 percent of original size [2021-05-01 06:42:07,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:42:07,179 INFO L142 QuantifierPusher]: treesize reduction 24, result has 59.3 percent of original size [2021-05-01 06:42:07,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:42:07,208 INFO L142 QuantifierPusher]: treesize reduction 12, result has 76.9 percent of original size [2021-05-01 06:42:07,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:42:07,249 INFO L142 QuantifierPusher]: treesize reduction 4, result has 94.5 percent of original size [2021-05-01 06:42:07,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:42:07,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:07,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:42:07,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:07,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:42:07,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:07,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:42:07,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:07,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:07,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:07,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:07,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:42:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:07,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:07,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:07,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-01 06:42:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:07,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:07,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:07,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-01 06:42:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:07,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:07,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:07,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-01 06:42:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:07,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:07,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:07,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:07,415 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:07,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668904521] [2021-05-01 06:42:07,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [668904521] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:07,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:07,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-01 06:42:07,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416646108] [2021-05-01 06:42:07,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-01 06:42:07,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:07,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-01 06:42:07,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-05-01 06:42:07,416 INFO L87 Difference]: Start difference. First operand 2251 states and 3032 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 22 states have internal predecessors, (51), 3 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:42:08,911 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2021-05-01 06:42:09,121 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2021-05-01 06:42:09,316 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-05-01 06:42:09,687 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2021-05-01 06:42:11,937 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2021-05-01 06:42:13,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:13,438 INFO L93 Difference]: Finished difference Result 3389 states and 4466 transitions. [2021-05-01 06:42:13,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-01 06:42:13,438 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 22 states have internal predecessors, (51), 3 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 110 [2021-05-01 06:42:13,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:13,442 INFO L225 Difference]: With dead ends: 3389 [2021-05-01 06:42:13,442 INFO L226 Difference]: Without dead ends: 2087 [2021-05-01 06:42:13,444 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1646 ImplicationChecksByTransitivity, 4519.8ms TimeCoverageRelationStatistics Valid=1205, Invalid=4801, Unknown=0, NotChecked=0, Total=6006 [2021-05-01 06:42:13,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2021-05-01 06:42:14,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 1495. [2021-05-01 06:42:14,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1479 states have (on average 1.330628803245436) internal successors, (1968), 1480 states have internal predecessors, (1968), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-01 06:42:14,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 1983 transitions. [2021-05-01 06:42:14,294 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 1983 transitions. Word has length 110 [2021-05-01 06:42:14,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:14,294 INFO L480 AbstractCegarLoop]: Abstraction has 1495 states and 1983 transitions. [2021-05-01 06:42:14,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 22 states have internal predecessors, (51), 3 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:42:14,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 1983 transitions. [2021-05-01 06:42:14,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-01 06:42:14,296 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:14,296 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:42:14,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-01 06:42:14,296 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:14,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:14,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1537990282, now seen corresponding path program 20 times [2021-05-01 06:42:14,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:14,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978743655] [2021-05-01 06:42:14,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:14,300 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:14,301 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:14,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:14,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:42:14,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:14,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:42:14,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:14,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:42:14,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:14,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:42:14,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:14,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:42:14,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:14,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:42:14,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:14,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:42:14,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:14,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:42:14,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:14,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:42:14,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:14,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:42:14,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:14,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:42:14,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:14,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:42:14,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:14,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:14,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:14,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:14,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:42:14,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:42:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:14,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:14,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:42:14,474 INFO L142 QuantifierPusher]: treesize reduction 22, result has 47.6 percent of original size [2021-05-01 06:42:14,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:42:14,492 INFO L142 QuantifierPusher]: treesize reduction 36, result has 64.0 percent of original size [2021-05-01 06:42:14,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 06:42:14,534 INFO L142 QuantifierPusher]: treesize reduction 36, result has 62.9 percent of original size [2021-05-01 06:42:14,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:42:14,574 INFO L142 QuantifierPusher]: treesize reduction 18, result has 73.1 percent of original size [2021-05-01 06:42:14,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:42:14,609 INFO L142 QuantifierPusher]: treesize reduction 18, result has 74.3 percent of original size [2021-05-01 06:42:14,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:42:14,651 INFO L142 QuantifierPusher]: treesize reduction 22, result has 78.2 percent of original size [2021-05-01 06:42:14,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 06:42:14,698 INFO L142 QuantifierPusher]: treesize reduction 18, result has 77.8 percent of original size [2021-05-01 06:42:14,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:42:14,729 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.3 percent of original size [2021-05-01 06:42:14,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:42:14,762 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.0 percent of original size [2021-05-01 06:42:14,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:42:14,806 INFO L142 QuantifierPusher]: treesize reduction 67, result has 60.1 percent of original size [2021-05-01 06:42:14,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 06:42:14,891 INFO L142 QuantifierPusher]: treesize reduction 81, result has 60.7 percent of original size [2021-05-01 06:42:14,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-05-01 06:42:14,995 INFO L142 QuantifierPusher]: treesize reduction 81, result has 60.1 percent of original size [2021-05-01 06:42:14,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-05-01 06:42:15,092 INFO L142 QuantifierPusher]: treesize reduction 6, result has 94.2 percent of original size [2021-05-01 06:42:15,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-05-01 06:42:15,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:42:15,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:42:15,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:42:15,260 INFO L142 QuantifierPusher]: treesize reduction 4, result has 94.3 percent of original size [2021-05-01 06:42:15,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:42:15,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:42:15,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:42:15,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:42:15,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:42:15,479 INFO L142 QuantifierPusher]: treesize reduction 4, result has 91.8 percent of original size [2021-05-01 06:42:15,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:42:15,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:42:15,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:42:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:15,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:15,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-01 06:42:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:15,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:15,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-01 06:42:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:15,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:15,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-01 06:42:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:15,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:15,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:15,538 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:15,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978743655] [2021-05-01 06:42:15,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1978743655] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:15,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:15,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-05-01 06:42:15,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490434975] [2021-05-01 06:42:15,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-01 06:42:15,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:15,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-01 06:42:15,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2021-05-01 06:42:15,539 INFO L87 Difference]: Start difference. First operand 1495 states and 1983 transitions. Second operand has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 27 states have internal predecessors, (52), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:42:17,220 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-01 06:42:17,793 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-05-01 06:42:20,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:20,857 INFO L93 Difference]: Finished difference Result 2439 states and 3239 transitions. [2021-05-01 06:42:20,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-01 06:42:20,857 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 27 states have internal predecessors, (52), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 110 [2021-05-01 06:42:20,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:20,861 INFO L225 Difference]: With dead ends: 2439 [2021-05-01 06:42:20,861 INFO L226 Difference]: Without dead ends: 1585 [2021-05-01 06:42:20,862 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 3904.3ms TimeCoverageRelationStatistics Valid=487, Invalid=3545, Unknown=0, NotChecked=0, Total=4032 [2021-05-01 06:42:20,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-05-01 06:42:21,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1502. [2021-05-01 06:42:21,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1486 states have (on average 1.3310901749663526) internal successors, (1978), 1487 states have internal predecessors, (1978), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-01 06:42:21,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 1993 transitions. [2021-05-01 06:42:21,702 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 1993 transitions. Word has length 110 [2021-05-01 06:42:21,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:21,702 INFO L480 AbstractCegarLoop]: Abstraction has 1502 states and 1993 transitions. [2021-05-01 06:42:21,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 27 states have internal predecessors, (52), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:42:21,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 1993 transitions. [2021-05-01 06:42:21,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-01 06:42:21,704 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:21,704 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:42:21,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-01 06:42:21,704 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:21,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:21,704 INFO L82 PathProgramCache]: Analyzing trace with hash 857919096, now seen corresponding path program 21 times [2021-05-01 06:42:21,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:21,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448289588] [2021-05-01 06:42:21,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:21,708 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:21,709 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:21,742 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-05-01 06:42:21,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:42:21,751 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-05-01 06:42:21,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:42:21,752 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:42:21,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:42:21,764 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:42:21,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:42:21,769 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:42:21,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:42:21,770 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:42:21,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:42:21,776 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:42:21,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:42:21,777 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:42:21,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:42:21,782 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:42:21,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:42:21,784 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:42:21,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:42:21,789 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-05-01 06:42:21,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:42:21,790 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-05-01 06:42:21,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:42:21,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:21,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:21,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:21,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:21,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:42:21,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:42:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:21,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:21,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:42:21,863 INFO L142 QuantifierPusher]: treesize reduction 26, result has 40.9 percent of original size [2021-05-01 06:42:21,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:42:21,882 INFO L142 QuantifierPusher]: treesize reduction 36, result has 66.7 percent of original size [2021-05-01 06:42:21,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:42:21,928 INFO L142 QuantifierPusher]: treesize reduction 22, result has 73.5 percent of original size [2021-05-01 06:42:21,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:42:21,962 INFO L142 QuantifierPusher]: treesize reduction 41, result has 66.1 percent of original size [2021-05-01 06:42:21,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-05-01 06:42:22,004 INFO L142 QuantifierPusher]: treesize reduction 19, result has 75.0 percent of original size [2021-05-01 06:42:22,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:42:22,053 INFO L142 QuantifierPusher]: treesize reduction 27, result has 76.5 percent of original size [2021-05-01 06:42:22,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-05-01 06:42:22,107 INFO L142 QuantifierPusher]: treesize reduction 14, result has 71.4 percent of original size [2021-05-01 06:42:22,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:42:22,134 INFO L142 QuantifierPusher]: treesize reduction 5, result has 90.9 percent of original size [2021-05-01 06:42:22,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:42:22,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:22,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:42:22,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:22,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:42:22,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:42:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:22,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:22,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:22,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-01 06:42:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:22,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:22,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:22,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-01 06:42:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:22,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:22,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:22,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-01 06:42:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:22,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:22,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:22,236 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:22,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448289588] [2021-05-01 06:42:22,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [448289588] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:22,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:22,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-01 06:42:22,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973725273] [2021-05-01 06:42:22,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-01 06:42:22,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:22,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-01 06:42:22,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-05-01 06:42:22,237 INFO L87 Difference]: Start difference. First operand 1502 states and 1993 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:42:23,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:23,808 INFO L93 Difference]: Finished difference Result 2703 states and 3601 transitions. [2021-05-01 06:42:23,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-01 06:42:23,809 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 110 [2021-05-01 06:42:23,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:23,811 INFO L225 Difference]: With dead ends: 2703 [2021-05-01 06:42:23,811 INFO L226 Difference]: Without dead ends: 1443 [2021-05-01 06:42:23,813 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 973.5ms TimeCoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2021-05-01 06:42:23,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-05-01 06:42:24,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2021-05-01 06:42:24,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1427 states have (on average 1.3356692361597757) internal successors, (1906), 1428 states have internal predecessors, (1906), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-01 06:42:24,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1921 transitions. [2021-05-01 06:42:24,626 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1921 transitions. Word has length 110 [2021-05-01 06:42:24,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:24,626 INFO L480 AbstractCegarLoop]: Abstraction has 1443 states and 1921 transitions. [2021-05-01 06:42:24,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:42:24,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1921 transitions. [2021-05-01 06:42:24,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-01 06:42:24,628 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:24,628 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:42:24,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-01 06:42:24,628 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:24,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:24,628 INFO L82 PathProgramCache]: Analyzing trace with hash -650457288, now seen corresponding path program 22 times [2021-05-01 06:42:24,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:24,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885281354] [2021-05-01 06:42:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:24,644 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:24,644 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:24,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:24,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:42:24,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:24,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:42:24,689 INFO L142 QuantifierPusher]: treesize reduction 50, result has 64.3 percent of original size [2021-05-01 06:42:24,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-05-01 06:42:24,731 INFO L142 QuantifierPusher]: treesize reduction 50, result has 69.1 percent of original size [2021-05-01 06:42:24,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-05-01 06:42:24,780 INFO L142 QuantifierPusher]: treesize reduction 10, result has 86.8 percent of original size [2021-05-01 06:42:24,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:42:24,815 INFO L142 QuantifierPusher]: treesize reduction 10, result has 85.5 percent of original size [2021-05-01 06:42:24,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:42:24,825 INFO L142 QuantifierPusher]: treesize reduction 10, result has 86.8 percent of original size [2021-05-01 06:42:24,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:42:24,861 INFO L142 QuantifierPusher]: treesize reduction 10, result has 85.5 percent of original size [2021-05-01 06:42:24,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:42:24,874 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.4 percent of original size [2021-05-01 06:42:24,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:42:24,912 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.5 percent of original size [2021-05-01 06:42:24,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:42:24,925 INFO L142 QuantifierPusher]: treesize reduction 23, result has 64.6 percent of original size [2021-05-01 06:42:24,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 06:42:24,952 INFO L142 QuantifierPusher]: treesize reduction 24, result has 51.0 percent of original size [2021-05-01 06:42:24,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:42:24,971 INFO L142 QuantifierPusher]: treesize reduction 9, result has 73.5 percent of original size [2021-05-01 06:42:24,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:42:24,972 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-05-01 06:42:24,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:42:24,985 INFO L142 QuantifierPusher]: treesize reduction 9, result has 60.9 percent of original size [2021-05-01 06:42:24,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:42:25,001 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:42:25,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:42:25,017 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:42:25,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:42:25,036 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:42:25,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:42:25,055 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-05-01 06:42:25,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:42:25,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:25,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:25,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:25,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:25,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:25,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:25,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:25,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:25,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:25,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:25,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:42:25,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:42:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:25,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:25,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:25,256 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size [2021-05-01 06:42:25,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:42:25,297 INFO L142 QuantifierPusher]: treesize reduction 36, result has 51.4 percent of original size [2021-05-01 06:42:25,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:42:25,347 INFO L142 QuantifierPusher]: treesize reduction 4, result has 87.1 percent of original size [2021-05-01 06:42:25,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:42:25,371 INFO L142 QuantifierPusher]: treesize reduction 4, result has 87.1 percent of original size [2021-05-01 06:42:25,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:42:25,411 INFO L142 QuantifierPusher]: treesize reduction 22, result has 57.7 percent of original size [2021-05-01 06:42:25,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:42:25,454 INFO L142 QuantifierPusher]: treesize reduction 18, result has 71.4 percent of original size [2021-05-01 06:42:25,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:42:25,506 INFO L142 QuantifierPusher]: treesize reduction 22, result has 76.6 percent of original size [2021-05-01 06:42:25,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:42:25,563 INFO L142 QuantifierPusher]: treesize reduction 35, result has 64.3 percent of original size [2021-05-01 06:42:25,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:42:25,618 INFO L142 QuantifierPusher]: treesize reduction 35, result has 57.3 percent of original size [2021-05-01 06:42:25,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:42:25,674 INFO L142 QuantifierPusher]: treesize reduction 33, result has 76.4 percent of original size [2021-05-01 06:42:25,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-05-01 06:42:25,781 INFO L142 QuantifierPusher]: treesize reduction 33, result has 76.4 percent of original size [2021-05-01 06:42:25,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-05-01 06:42:25,887 INFO L142 QuantifierPusher]: treesize reduction 33, result has 76.4 percent of original size [2021-05-01 06:42:25,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-05-01 06:42:26,009 INFO L142 QuantifierPusher]: treesize reduction 12, result has 78.9 percent of original size [2021-05-01 06:42:26,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:42:26,064 INFO L142 QuantifierPusher]: treesize reduction 12, result has 78.9 percent of original size [2021-05-01 06:42:26,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:42:26,121 INFO L142 QuantifierPusher]: treesize reduction 12, result has 78.9 percent of original size [2021-05-01 06:42:26,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:42:26,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:26,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:42:26,249 INFO L142 QuantifierPusher]: treesize reduction 4, result has 94.4 percent of original size [2021-05-01 06:42:26,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 06:42:26,339 INFO L142 QuantifierPusher]: treesize reduction 18, result has 80.4 percent of original size [2021-05-01 06:42:26,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 06:42:26,416 INFO L142 QuantifierPusher]: treesize reduction 18, result has 71.4 percent of original size [2021-05-01 06:42:26,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:42:26,473 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.0 percent of original size [2021-05-01 06:42:26,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:42:26,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:26,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:42:26,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:42:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:26,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:26,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:26,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-01 06:42:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:26,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:26,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:26,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-01 06:42:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:26,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:26,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:26,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-01 06:42:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:26,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:26,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:26,537 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:26,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885281354] [2021-05-01 06:42:26,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1885281354] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:26,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:26,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2021-05-01 06:42:26,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608743389] [2021-05-01 06:42:26,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-01 06:42:26,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:26,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-01 06:42:26,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1504, Unknown=0, NotChecked=0, Total=1640 [2021-05-01 06:42:26,538 INFO L87 Difference]: Start difference. First operand 1443 states and 1921 transitions. Second operand has 41 states, 40 states have (on average 1.75) internal successors, (70), 37 states have internal predecessors, (70), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-01 06:42:27,854 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2021-05-01 06:42:28,245 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-05-01 06:42:28,387 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2021-05-01 06:42:28,549 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2021-05-01 06:42:28,802 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 76 [2021-05-01 06:42:28,970 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2021-05-01 06:42:29,183 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2021-05-01 06:42:29,347 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-01 06:42:29,545 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2021-05-01 06:42:29,975 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 99 [2021-05-01 06:42:30,167 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2021-05-01 06:42:30,454 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 96 [2021-05-01 06:42:30,649 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2021-05-01 06:42:30,897 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 96 [2021-05-01 06:42:31,065 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2021-05-01 06:42:31,351 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 99 [2021-05-01 06:42:31,648 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 98 [2021-05-01 06:42:31,921 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 96 [2021-05-01 06:42:32,261 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 97 [2021-05-01 06:42:32,518 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 98 [2021-05-01 06:42:32,867 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 101 [2021-05-01 06:42:33,171 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 101 [2021-05-01 06:42:33,480 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 94 [2021-05-01 06:42:33,715 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2021-05-01 06:42:34,007 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 91 [2021-05-01 06:42:34,233 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-01 06:42:34,856 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 88 [2021-05-01 06:42:35,083 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-01 06:42:35,526 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 97 [2021-05-01 06:42:35,941 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 96 [2021-05-01 06:42:36,405 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 89 [2021-05-01 06:42:37,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:37,327 INFO L93 Difference]: Finished difference Result 3035 states and 4053 transitions. [2021-05-01 06:42:37,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-01 06:42:37,328 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.75) internal successors, (70), 37 states have internal predecessors, (70), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 110 [2021-05-01 06:42:37,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:37,332 INFO L225 Difference]: With dead ends: 3035 [2021-05-01 06:42:37,332 INFO L226 Difference]: Without dead ends: 1896 [2021-05-01 06:42:37,333 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2123 ImplicationChecksByTransitivity, 9887.3ms TimeCoverageRelationStatistics Valid=974, Invalid=7582, Unknown=0, NotChecked=0, Total=8556 [2021-05-01 06:42:37,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2021-05-01 06:42:38,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1630. [2021-05-01 06:42:38,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1614 states have (on average 1.3370508054522925) internal successors, (2158), 1615 states have internal predecessors, (2158), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-01 06:42:38,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2173 transitions. [2021-05-01 06:42:38,282 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2173 transitions. Word has length 110 [2021-05-01 06:42:38,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:38,282 INFO L480 AbstractCegarLoop]: Abstraction has 1630 states and 2173 transitions. [2021-05-01 06:42:38,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 40 states have (on average 1.75) internal successors, (70), 37 states have internal predecessors, (70), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-01 06:42:38,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2173 transitions. [2021-05-01 06:42:38,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-01 06:42:38,284 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:38,284 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:42:38,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-01 06:42:38,284 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:38,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:38,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1866611014, now seen corresponding path program 23 times [2021-05-01 06:42:38,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:38,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045574483] [2021-05-01 06:42:38,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:38,291 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:38,292 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:38,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:38,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:42:38,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:38,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:42:38,338 INFO L142 QuantifierPusher]: treesize reduction 59, result has 59.9 percent of original size [2021-05-01 06:42:38,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-05-01 06:42:38,379 INFO L142 QuantifierPusher]: treesize reduction 52, result has 67.1 percent of original size [2021-05-01 06:42:38,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-05-01 06:42:38,434 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.1 percent of original size [2021-05-01 06:42:38,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:42:38,475 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.1 percent of original size [2021-05-01 06:42:38,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:42:38,486 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.1 percent of original size [2021-05-01 06:42:38,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:42:38,532 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.1 percent of original size [2021-05-01 06:42:38,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:42:38,546 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.1 percent of original size [2021-05-01 06:42:38,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:42:38,589 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.1 percent of original size [2021-05-01 06:42:38,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:42:38,604 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.2 percent of original size [2021-05-01 06:42:38,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:42:38,624 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-05-01 06:42:38,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:42:38,645 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-05-01 06:42:38,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:42:38,659 INFO L142 QuantifierPusher]: treesize reduction 9, result has 60.9 percent of original size [2021-05-01 06:42:38,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:42:38,678 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:42:38,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:42:38,696 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:42:38,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:42:38,716 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:42:38,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:42:38,737 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-05-01 06:42:38,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:42:38,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:38,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:38,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:38,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:38,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:38,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:38,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:38,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:38,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:38,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:38,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:42:38,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:42:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:38,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:38,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:38,901 INFO L142 QuantifierPusher]: treesize reduction 11, result has 42.1 percent of original size [2021-05-01 06:42:38,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:42:38,928 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-05-01 06:42:38,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:42:38,959 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-05-01 06:42:38,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:42:38,960 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-05-01 06:42:38,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:42:38,961 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-05-01 06:42:38,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:42:38,962 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-05-01 06:42:38,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:42:38,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:42:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:38,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:38,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:38,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-01 06:42:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:38,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:38,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:38,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-01 06:42:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:38,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:38,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:38,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-01 06:42:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:38,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:38,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:38,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:38,975 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:38,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045574483] [2021-05-01 06:42:38,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2045574483] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:38,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:38,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-05-01 06:42:38,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606729961] [2021-05-01 06:42:38,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-01 06:42:38,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:38,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-01 06:42:38,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2021-05-01 06:42:38,976 INFO L87 Difference]: Start difference. First operand 1630 states and 2173 transitions. Second operand has 23 states, 22 states have (on average 2.409090909090909) internal successors, (53), 20 states have internal predecessors, (53), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-01 06:42:41,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:41,282 INFO L93 Difference]: Finished difference Result 1642 states and 2185 transitions. [2021-05-01 06:42:41,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-01 06:42:41,283 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.409090909090909) internal successors, (53), 20 states have internal predecessors, (53), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 110 [2021-05-01 06:42:41,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:41,286 INFO L225 Difference]: With dead ends: 1642 [2021-05-01 06:42:41,286 INFO L226 Difference]: Without dead ends: 1640 [2021-05-01 06:42:41,286 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1323.0ms TimeCoverageRelationStatistics Valid=299, Invalid=1593, Unknown=0, NotChecked=0, Total=1892 [2021-05-01 06:42:41,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2021-05-01 06:42:42,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1638. [2021-05-01 06:42:42,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1620 states have (on average 1.3358024691358024) internal successors, (2164), 1621 states have internal predecessors, (2164), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-01 06:42:42,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2181 transitions. [2021-05-01 06:42:42,214 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2181 transitions. Word has length 110 [2021-05-01 06:42:42,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:42,214 INFO L480 AbstractCegarLoop]: Abstraction has 1638 states and 2181 transitions. [2021-05-01 06:42:42,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 2.409090909090909) internal successors, (53), 20 states have internal predecessors, (53), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-01 06:42:42,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2181 transitions. [2021-05-01 06:42:42,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-05-01 06:42:42,216 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:42,216 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:42:42,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-01 06:42:42,217 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:42,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:42,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1803619758, now seen corresponding path program 24 times [2021-05-01 06:42:42,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:42,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202756975] [2021-05-01 06:42:42,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:42,221 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:42,222 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:42,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:42,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:42,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:42,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:42,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:42,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:42,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:42,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:42,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:42,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:42,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:42,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:42,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:42,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:42,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:42,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:42,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:42,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:42,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:42,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 06:42:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:42,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:42,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:42,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-01 06:42:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:42,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:42,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:42,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-01 06:42:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:42,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:42,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:42,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-01 06:42:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:42,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:42,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:42,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-01 06:42:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:42,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:42,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:42,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-01 06:42:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:42,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:42,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:42,341 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:42,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202756975] [2021-05-01 06:42:42,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1202756975] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:42,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:42,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-01 06:42:42,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47755963] [2021-05-01 06:42:42,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-01 06:42:42,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:42,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-01 06:42:42,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-05-01 06:42:42,342 INFO L87 Difference]: Start difference. First operand 1638 states and 2181 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 7 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-05-01 06:42:43,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:43,472 INFO L93 Difference]: Finished difference Result 1641 states and 2184 transitions. [2021-05-01 06:42:43,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-01 06:42:43,473 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 7 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 118 [2021-05-01 06:42:43,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:43,473 INFO L225 Difference]: With dead ends: 1641 [2021-05-01 06:42:43,473 INFO L226 Difference]: Without dead ends: 0 [2021-05-01 06:42:43,475 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-05-01 06:42:43,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-01 06:42:43,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-01 06:42:43,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-01 06:42:43,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-01 06:42:43,476 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 118 [2021-05-01 06:42:43,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:43,476 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-01 06:42:43,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 7 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-05-01 06:42:43,476 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-01 06:42:43,476 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-01 06:42:43,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-01 06:42:43,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-01 06:47:39,443 WARN L205 SmtUtils]: Spent 4.93 m on a formula simplification. DAG size of input: 6112 DAG size of output: 5348 [2021-05-01 06:52:20,175 WARN L205 SmtUtils]: Spent 4.68 m on a formula simplification. DAG size of input: 5854 DAG size of output: 4865 [2021-05-01 06:53:08,240 WARN L205 SmtUtils]: Spent 47.88 s on a formula simplification. DAG size of input: 2284 DAG size of output: 1990