/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:29:12,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:29:12,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:29:12,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 05:29:12,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:29:12,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:29:12,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:29:12,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:29:12,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:29:12,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:29:12,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:29:12,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:29:12,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:29:12,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:29:12,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:29:12,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:29:12,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:29:12,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:29:12,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:29:12,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:29:12,443 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:29:12,456 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:29:12,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:29:12,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:29:12,458 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:29:12,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:29:12,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:29:12,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:29:12,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:29:12,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:29:12,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:29:12,460 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:29:12,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:29:12,460 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:29:12,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:29:12,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:29:12,461 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:29:12,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:29:12,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:29:12,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:29:12,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:29:12,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:29:12,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:29:12,463 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:29:12,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:29:12,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:29:12,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:29:12,882 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:29:12,883 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:29:12,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-11-07 05:29:12,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7589d930/3d373d4df62c46208bb82fbd6376fc55/FLAGe532d4baf [2020-11-07 05:29:13,745 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:29:13,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-11-07 05:29:13,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7589d930/3d373d4df62c46208bb82fbd6376fc55/FLAGe532d4baf [2020-11-07 05:29:13,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7589d930/3d373d4df62c46208bb82fbd6376fc55 [2020-11-07 05:29:13,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:29:13,993 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:29:13,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:29:13,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:29:13,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:29:14,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:29:13" (1/1) ... [2020-11-07 05:29:14,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@216b903f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:29:14, skipping insertion in model container [2020-11-07 05:29:14,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:29:13" (1/1) ... [2020-11-07 05:29:14,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:29:14,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:29:14,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:29:14,509 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:29:14,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:29:14,708 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:29:14,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:29:14 WrapperNode [2020-11-07 05:29:14,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:29:14,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:29:14,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:29:14,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:29:14,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:29:14" (1/1) ... [2020-11-07 05:29:14,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:29:14" (1/1) ... [2020-11-07 05:29:14,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:29:14" (1/1) ... [2020-11-07 05:29:14,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:29:14" (1/1) ... [2020-11-07 05:29:14,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:29:14" (1/1) ... [2020-11-07 05:29:14,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:29:14" (1/1) ... [2020-11-07 05:29:14,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:29:14" (1/1) ... [2020-11-07 05:29:14,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:29:14,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:29:14,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:29:14,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:29:14,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:29:14" (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 [2020-11-07 05:29:14,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:29:14,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:29:14,954 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:29:14,954 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-11-07 05:29:14,955 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:29:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-11-07 05:29:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:29:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:29:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:29:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:29:14,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:29:14,956 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 05:29:14,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:29:14,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:29:14,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:29:14,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:29:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:29:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:29:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:29:16,978 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:29:16,979 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 05:29:16,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:29:16 BoogieIcfgContainer [2020-11-07 05:29:16,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:29:16,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:29:16,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:29:16,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:29:16,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:29:13" (1/3) ... [2020-11-07 05:29:16,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653a0bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:29:16, skipping insertion in model container [2020-11-07 05:29:16,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:29:14" (2/3) ... [2020-11-07 05:29:16,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653a0bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:29:16, skipping insertion in model container [2020-11-07 05:29:16,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:29:16" (3/3) ... [2020-11-07 05:29:16,991 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2020-11-07 05:29:17,007 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:29:17,012 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:29:17,025 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:29:17,051 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:29:17,051 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:29:17,065 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:29:17,065 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:29:17,066 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:29:17,066 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:29:17,066 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:29:17,066 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:29:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states. [2020-11-07 05:29:17,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-11-07 05:29:17,121 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:29:17,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:29:17,125 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:29:17,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:29:17,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1825493562, now seen corresponding path program 1 times [2020-11-07 05:29:17,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:29:17,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608492346] [2020-11-07 05:29:17,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:29:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:17,880 WARN L194 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:29:17,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:29:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:29:18,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608492346] [2020-11-07 05:29:18,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:29:18,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 05:29:18,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604426218] [2020-11-07 05:29:18,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 05:29:18,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:29:18,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 05:29:18,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:29:18,086 INFO L87 Difference]: Start difference. First operand 537 states. Second operand 5 states. [2020-11-07 05:29:18,459 WARN L194 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:29:19,578 WARN L194 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:29:23,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:29:23,317 INFO L93 Difference]: Finished difference Result 1373 states and 1909 transitions. [2020-11-07 05:29:23,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 05:29:23,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-11-07 05:29:23,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:29:23,347 INFO L225 Difference]: With dead ends: 1373 [2020-11-07 05:29:23,347 INFO L226 Difference]: Without dead ends: 790 [2020-11-07 05:29:23,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:29:23,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2020-11-07 05:29:23,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 755. [2020-11-07 05:29:23,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2020-11-07 05:29:23,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 923 transitions. [2020-11-07 05:29:23,634 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 923 transitions. Word has length 169 [2020-11-07 05:29:23,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:29:23,636 INFO L481 AbstractCegarLoop]: Abstraction has 755 states and 923 transitions. [2020-11-07 05:29:23,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 05:29:23,636 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 923 transitions. [2020-11-07 05:29:23,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-11-07 05:29:23,645 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:29:23,645 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:29:23,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:29:23,646 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:29:23,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:29:23,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1323499324, now seen corresponding path program 1 times [2020-11-07 05:29:23,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:29:23,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812502752] [2020-11-07 05:29:23,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:29:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:24,171 WARN L194 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:29:24,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:29:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:24,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:29:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:24,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:29:24,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812502752] [2020-11-07 05:29:24,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:29:24,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:29:24,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784112997] [2020-11-07 05:29:24,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:29:24,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:29:24,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:29:24,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:29:24,580 INFO L87 Difference]: Start difference. First operand 755 states and 923 transitions. Second operand 11 states. [2020-11-07 05:29:24,924 WARN L194 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:29:25,384 WARN L194 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:29:25,668 WARN L194 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:29:25,927 WARN L194 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:29:26,482 WARN L194 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 05:29:26,850 WARN L194 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:29:32,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:29:32,726 INFO L93 Difference]: Finished difference Result 2962 states and 3993 transitions. [2020-11-07 05:29:32,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:29:32,728 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 190 [2020-11-07 05:29:32,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:29:32,757 INFO L225 Difference]: With dead ends: 2962 [2020-11-07 05:29:32,758 INFO L226 Difference]: Without dead ends: 1972 [2020-11-07 05:29:32,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:29:32,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2020-11-07 05:29:33,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1477. [2020-11-07 05:29:33,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1477 states. [2020-11-07 05:29:33,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 1797 transitions. [2020-11-07 05:29:33,198 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 1797 transitions. Word has length 190 [2020-11-07 05:29:33,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:29:33,199 INFO L481 AbstractCegarLoop]: Abstraction has 1477 states and 1797 transitions. [2020-11-07 05:29:33,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:29:33,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 1797 transitions. [2020-11-07 05:29:33,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-11-07 05:29:33,214 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:29:33,216 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:29:33,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:29:33,216 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:29:33,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:29:33,219 INFO L82 PathProgramCache]: Analyzing trace with hash -962767157, now seen corresponding path program 1 times [2020-11-07 05:29:33,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:29:33,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345762271] [2020-11-07 05:29:33,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:29:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:33,497 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:29:33,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:29:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:33,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:29:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:33,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:29:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:33,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-11-07 05:29:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 71 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-07 05:29:33,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345762271] [2020-11-07 05:29:33,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:29:33,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:29:33,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386309982] [2020-11-07 05:29:33,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:29:33,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:29:33,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:29:33,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:29:33,699 INFO L87 Difference]: Start difference. First operand 1477 states and 1797 transitions. Second operand 7 states. [2020-11-07 05:29:34,081 WARN L194 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:29:34,808 WARN L194 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:29:38,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:29:38,029 INFO L93 Difference]: Finished difference Result 3708 states and 4612 transitions. [2020-11-07 05:29:38,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 05:29:38,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-11-07 05:29:38,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:29:38,055 INFO L225 Difference]: With dead ends: 3708 [2020-11-07 05:29:38,055 INFO L226 Difference]: Without dead ends: 2263 [2020-11-07 05:29:38,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:29:38,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2020-11-07 05:29:38,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 1929. [2020-11-07 05:29:38,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1929 states. [2020-11-07 05:29:38,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 2301 transitions. [2020-11-07 05:29:38,530 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 2301 transitions. Word has length 245 [2020-11-07 05:29:38,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:29:38,530 INFO L481 AbstractCegarLoop]: Abstraction has 1929 states and 2301 transitions. [2020-11-07 05:29:38,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:29:38,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 2301 transitions. [2020-11-07 05:29:38,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-11-07 05:29:38,541 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:29:38,542 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:29:38,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:29:38,542 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:29:38,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:29:38,543 INFO L82 PathProgramCache]: Analyzing trace with hash 65535787, now seen corresponding path program 1 times [2020-11-07 05:29:38,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:29:38,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589184108] [2020-11-07 05:29:38,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:29:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:38,808 WARN L194 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:29:38,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:29:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:38,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:29:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:38,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:29:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:38,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-11-07 05:29:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 82 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-07 05:29:38,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589184108] [2020-11-07 05:29:38,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:29:38,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:29:38,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315605997] [2020-11-07 05:29:38,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:29:38,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:29:38,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:29:38,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:29:38,992 INFO L87 Difference]: Start difference. First operand 1929 states and 2301 transitions. Second operand 7 states. [2020-11-07 05:29:39,291 WARN L194 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:29:40,684 WARN L194 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:29:43,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:29:43,097 INFO L93 Difference]: Finished difference Result 4251 states and 5319 transitions. [2020-11-07 05:29:43,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 05:29:43,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-11-07 05:29:43,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:29:43,129 INFO L225 Difference]: With dead ends: 4251 [2020-11-07 05:29:43,130 INFO L226 Difference]: Without dead ends: 2495 [2020-11-07 05:29:43,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:29:43,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2020-11-07 05:29:43,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2264. [2020-11-07 05:29:43,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2264 states. [2020-11-07 05:29:43,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 2719 transitions. [2020-11-07 05:29:43,707 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 2719 transitions. Word has length 256 [2020-11-07 05:29:43,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:29:43,707 INFO L481 AbstractCegarLoop]: Abstraction has 2264 states and 2719 transitions. [2020-11-07 05:29:43,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:29:43,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 2719 transitions. [2020-11-07 05:29:43,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-11-07 05:29:43,720 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:29:43,720 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:29:43,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:29:43,721 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:29:43,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:29:43,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1687106550, now seen corresponding path program 1 times [2020-11-07 05:29:43,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:29:43,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483219905] [2020-11-07 05:29:43,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:29:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:43,998 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:29:43,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:29:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:44,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:29:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:44,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:29:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:44,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-11-07 05:29:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:44,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-11-07 05:29:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 124 proven. 28 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-11-07 05:29:44,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483219905] [2020-11-07 05:29:44,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:29:44,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:29:44,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674090521] [2020-11-07 05:29:44,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:29:44,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:29:44,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:29:44,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:29:44,268 INFO L87 Difference]: Start difference. First operand 2264 states and 2719 transitions. Second operand 10 states. [2020-11-07 05:29:44,562 WARN L194 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:29:44,961 WARN L194 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-11-07 05:29:45,362 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:29:45,815 WARN L194 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:29:46,491 WARN L194 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:29:46,753 WARN L194 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:29:47,184 WARN L194 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-11-07 05:29:48,794 WARN L194 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:29:49,320 WARN L194 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:29:50,066 WARN L194 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:29:50,570 WARN L194 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:29:55,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:29:55,559 INFO L93 Difference]: Finished difference Result 7420 states and 9263 transitions. [2020-11-07 05:29:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-07 05:29:55,568 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 281 [2020-11-07 05:29:55,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:29:55,608 INFO L225 Difference]: With dead ends: 7420 [2020-11-07 05:29:55,608 INFO L226 Difference]: Without dead ends: 5329 [2020-11-07 05:29:55,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2020-11-07 05:29:55,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5329 states. [2020-11-07 05:29:56,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5329 to 4567. [2020-11-07 05:29:56,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4567 states. [2020-11-07 05:29:56,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4567 states to 4567 states and 5396 transitions. [2020-11-07 05:29:56,677 INFO L78 Accepts]: Start accepts. Automaton has 4567 states and 5396 transitions. Word has length 281 [2020-11-07 05:29:56,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:29:56,677 INFO L481 AbstractCegarLoop]: Abstraction has 4567 states and 5396 transitions. [2020-11-07 05:29:56,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:29:56,678 INFO L276 IsEmpty]: Start isEmpty. Operand 4567 states and 5396 transitions. [2020-11-07 05:29:56,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-11-07 05:29:56,698 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:29:56,699 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:29:56,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 05:29:56,699 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:29:56,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:29:56,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1436516528, now seen corresponding path program 1 times [2020-11-07 05:29:56,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:29:56,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341828824] [2020-11-07 05:29:56,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:29:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:56,946 WARN L194 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:29:56,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:29:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:56,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:29:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:56,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:29:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:57,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-11-07 05:29:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:57,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 05:29:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 131 proven. 18 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-11-07 05:29:57,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341828824] [2020-11-07 05:29:57,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:29:57,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:29:57,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470276583] [2020-11-07 05:29:57,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:29:57,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:29:57,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:29:57,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:29:57,181 INFO L87 Difference]: Start difference. First operand 4567 states and 5396 transitions. Second operand 8 states. [2020-11-07 05:29:57,463 WARN L194 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:29:57,894 WARN L194 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:29:58,889 WARN L194 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:30:00,448 WARN L194 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:30:04,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:30:04,562 INFO L93 Difference]: Finished difference Result 10656 states and 12685 transitions. [2020-11-07 05:30:04,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 05:30:04,563 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 284 [2020-11-07 05:30:04,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:30:04,598 INFO L225 Difference]: With dead ends: 10656 [2020-11-07 05:30:04,598 INFO L226 Difference]: Without dead ends: 5408 [2020-11-07 05:30:04,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-07 05:30:04,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5408 states. [2020-11-07 05:30:05,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5408 to 4136. [2020-11-07 05:30:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4136 states. [2020-11-07 05:30:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 4675 transitions. [2020-11-07 05:30:05,668 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 4675 transitions. Word has length 284 [2020-11-07 05:30:05,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:30:05,668 INFO L481 AbstractCegarLoop]: Abstraction has 4136 states and 4675 transitions. [2020-11-07 05:30:05,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:30:05,669 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 4675 transitions. [2020-11-07 05:30:05,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-11-07 05:30:05,684 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:30:05,684 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:30:05,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 05:30:05,685 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:30:05,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:30:05,685 INFO L82 PathProgramCache]: Analyzing trace with hash 396043215, now seen corresponding path program 1 times [2020-11-07 05:30:05,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:30:05,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774945609] [2020-11-07 05:30:05,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:30:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:05,915 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:30:05,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:30:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:05,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:30:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:05,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:30:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:06,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-11-07 05:30:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:06,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-07 05:30:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:06,149 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 120 proven. 40 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-11-07 05:30:06,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774945609] [2020-11-07 05:30:06,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:30:06,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:30:06,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968922514] [2020-11-07 05:30:06,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:30:06,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:30:06,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:30:06,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:30:06,152 INFO L87 Difference]: Start difference. First operand 4136 states and 4675 transitions. Second operand 8 states. [2020-11-07 05:30:06,440 WARN L194 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:30:07,255 WARN L194 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:30:07,693 WARN L194 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:30:08,925 WARN L194 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:30:12,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:30:12,135 INFO L93 Difference]: Finished difference Result 8508 states and 9627 transitions. [2020-11-07 05:30:12,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 05:30:12,141 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 295 [2020-11-07 05:30:12,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:30:12,169 INFO L225 Difference]: With dead ends: 8508 [2020-11-07 05:30:12,170 INFO L226 Difference]: Without dead ends: 4545 [2020-11-07 05:30:12,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:30:12,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2020-11-07 05:30:13,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 4466. [2020-11-07 05:30:13,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4466 states. [2020-11-07 05:30:13,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 5016 transitions. [2020-11-07 05:30:13,113 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 5016 transitions. Word has length 295 [2020-11-07 05:30:13,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:30:13,114 INFO L481 AbstractCegarLoop]: Abstraction has 4466 states and 5016 transitions. [2020-11-07 05:30:13,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:30:13,114 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 5016 transitions. [2020-11-07 05:30:13,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-11-07 05:30:13,127 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:30:13,127 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:30:13,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 05:30:13,128 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:30:13,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:30:13,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1465037508, now seen corresponding path program 1 times [2020-11-07 05:30:13,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:30:13,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605076494] [2020-11-07 05:30:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:30:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:13,649 WARN L194 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:30:13,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:30:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:13,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:30:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:13,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:30:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:13,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 05:30:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 124 proven. 33 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-11-07 05:30:14,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605076494] [2020-11-07 05:30:14,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:30:14,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-11-07 05:30:14,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412151986] [2020-11-07 05:30:14,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-07 05:30:14,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:30:14,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-07 05:30:14,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-11-07 05:30:14,380 INFO L87 Difference]: Start difference. First operand 4466 states and 5016 transitions. Second operand 15 states. [2020-11-07 05:30:14,872 WARN L194 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-11-07 05:30:15,563 WARN L194 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2020-11-07 05:30:17,030 WARN L194 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-11-07 05:30:18,554 WARN L194 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-11-07 05:30:19,178 WARN L194 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:30:20,119 WARN L194 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 05:30:20,798 WARN L194 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 100 [2020-11-07 05:30:22,029 WARN L194 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 05:30:22,514 WARN L194 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:30:23,341 WARN L194 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-11-07 05:30:23,862 WARN L194 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-11-07 05:30:25,060 WARN L194 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 05:30:25,653 WARN L194 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2020-11-07 05:30:27,486 WARN L194 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 05:30:29,677 WARN L194 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-11-07 05:30:31,524 WARN L194 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-11-07 05:30:32,196 WARN L194 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2020-11-07 05:30:35,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:30:35,555 INFO L93 Difference]: Finished difference Result 11295 states and 12936 transitions. [2020-11-07 05:30:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-11-07 05:30:35,557 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 311 [2020-11-07 05:30:35,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:30:35,592 INFO L225 Difference]: With dead ends: 11295 [2020-11-07 05:30:35,592 INFO L226 Difference]: Without dead ends: 6527 [2020-11-07 05:30:35,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=830, Invalid=2476, Unknown=0, NotChecked=0, Total=3306 [2020-11-07 05:30:35,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6527 states. [2020-11-07 05:30:37,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6527 to 6444. [2020-11-07 05:30:37,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6444 states. [2020-11-07 05:30:37,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6444 states to 6444 states and 7086 transitions. [2020-11-07 05:30:37,082 INFO L78 Accepts]: Start accepts. Automaton has 6444 states and 7086 transitions. Word has length 311 [2020-11-07 05:30:37,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:30:37,083 INFO L481 AbstractCegarLoop]: Abstraction has 6444 states and 7086 transitions. [2020-11-07 05:30:37,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-07 05:30:37,083 INFO L276 IsEmpty]: Start isEmpty. Operand 6444 states and 7086 transitions. [2020-11-07 05:30:37,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-11-07 05:30:37,099 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:30:37,099 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:30:37,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 05:30:37,100 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:30:37,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:30:37,100 INFO L82 PathProgramCache]: Analyzing trace with hash -2078835029, now seen corresponding path program 1 times [2020-11-07 05:30:37,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:30:37,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594012278] [2020-11-07 05:30:37,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:30:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:37,356 WARN L194 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:30:37,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:30:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:37,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:30:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:37,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 05:30:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:37,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 05:30:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:37,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-11-07 05:30:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:37,617 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 178 proven. 28 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-11-07 05:30:37,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594012278] [2020-11-07 05:30:37,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:30:37,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:30:37,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973074307] [2020-11-07 05:30:37,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:30:37,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:30:37,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:30:37,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:30:37,621 INFO L87 Difference]: Start difference. First operand 6444 states and 7086 transitions. Second operand 10 states. [2020-11-07 05:30:37,867 WARN L194 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:30:38,143 WARN L194 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:30:39,175 WARN L194 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:30:39,958 WARN L194 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-11-07 05:30:40,319 WARN L194 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:30:40,565 WARN L194 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:30:42,297 WARN L194 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:30:43,387 WARN L194 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:30:44,256 WARN L194 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:30:44,552 WARN L194 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:30:45,206 WARN L194 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:30:48,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:30:48,353 INFO L93 Difference]: Finished difference Result 14750 states and 16335 transitions. [2020-11-07 05:30:48,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-07 05:30:48,354 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 328 [2020-11-07 05:30:48,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:30:48,391 INFO L225 Difference]: With dead ends: 14750 [2020-11-07 05:30:48,391 INFO L226 Difference]: Without dead ends: 8335 [2020-11-07 05:30:48,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2020-11-07 05:30:48,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8335 states. [2020-11-07 05:30:50,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8335 to 7944. [2020-11-07 05:30:50,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7944 states. [2020-11-07 05:30:50,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7944 states to 7944 states and 8579 transitions. [2020-11-07 05:30:50,364 INFO L78 Accepts]: Start accepts. Automaton has 7944 states and 8579 transitions. Word has length 328 [2020-11-07 05:30:50,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:30:50,365 INFO L481 AbstractCegarLoop]: Abstraction has 7944 states and 8579 transitions. [2020-11-07 05:30:50,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:30:50,365 INFO L276 IsEmpty]: Start isEmpty. Operand 7944 states and 8579 transitions. [2020-11-07 05:30:50,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-11-07 05:30:50,383 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:30:50,383 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:30:50,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 05:30:50,384 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:30:50,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:30:50,384 INFO L82 PathProgramCache]: Analyzing trace with hash 566248431, now seen corresponding path program 1 times [2020-11-07 05:30:50,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:30:50,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113265646] [2020-11-07 05:30:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:30:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:50,615 WARN L194 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:30:50,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:30:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:50,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:30:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:50,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 05:30:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:50,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 05:30:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:50,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-11-07 05:30:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:50,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-11-07 05:30:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:30:50,867 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 258 proven. 80 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-11-07 05:30:50,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113265646] [2020-11-07 05:30:50,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:30:50,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:30:50,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164754364] [2020-11-07 05:30:50,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:30:50,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:30:50,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:30:50,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:30:50,870 INFO L87 Difference]: Start difference. First operand 7944 states and 8579 transitions. Second operand 7 states. [2020-11-07 05:30:51,550 WARN L194 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:30:52,526 WARN L194 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:30:55,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:30:55,784 INFO L93 Difference]: Finished difference Result 15827 states and 17085 transitions. [2020-11-07 05:30:55,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 05:30:55,790 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 399 [2020-11-07 05:30:55,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:30:55,804 INFO L225 Difference]: With dead ends: 15827 [2020-11-07 05:30:55,805 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 05:30:55,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:30:55,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 05:30:55,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 05:30:55,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 05:30:55,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 05:30:55,836 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 399 [2020-11-07 05:30:55,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:30:55,836 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 05:30:55,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:30:55,836 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 05:30:55,836 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 05:30:55,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 05:30:55,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 05:30:56,430 WARN L194 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:30:56,876 WARN L194 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:31:22,545 WARN L194 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 241 [2020-11-07 05:31:52,616 WARN L194 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 241 [2020-11-07 05:31:54,238 WARN L194 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 241 [2020-11-07 05:31:54,429 WARN L194 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 241 [2020-11-07 05:32:09,901 WARN L194 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 241 [2020-11-07 05:33:20,981 WARN L194 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 241 [2020-11-07 05:34:06,077 WARN L194 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 241 [2020-11-07 05:34:06,266 WARN L194 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 241 [2020-11-07 05:34:06,458 WARN L194 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 241 [2020-11-07 05:34:08,724 WARN L194 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 241 [2020-11-07 05:34:18,226 WARN L194 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 222 DAG size of output: 73 [2020-11-07 05:34:22,976 WARN L194 SmtUtils]: Spent 4.73 s on a formula simplification. DAG size of input: 323 DAG size of output: 85 [2020-11-07 05:34:27,601 WARN L194 SmtUtils]: Spent 4.61 s on a formula simplification. DAG size of input: 324 DAG size of output: 84 [2020-11-07 05:34:32,308 WARN L194 SmtUtils]: Spent 4.69 s on a formula simplification. DAG size of input: 323 DAG size of output: 85 [2020-11-07 05:34:33,986 WARN L194 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 225 DAG size of output: 72 [2020-11-07 05:34:35,659 WARN L194 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 222 DAG size of output: 73 [2020-11-07 05:34:37,331 WARN L194 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 222 DAG size of output: 73 [2020-11-07 05:34:42,052 WARN L194 SmtUtils]: Spent 4.69 s on a formula simplification. DAG size of input: 323 DAG size of output: 85 [2020-11-07 05:34:43,744 WARN L194 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 224 DAG size of output: 80 [2020-11-07 05:34:48,461 WARN L194 SmtUtils]: Spent 4.70 s on a formula simplification. DAG size of input: 323 DAG size of output: 85 [2020-11-07 05:34:50,451 WARN L194 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 233 DAG size of output: 77 [2020-11-07 05:34:52,405 WARN L194 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 229 DAG size of output: 76 [2020-11-07 05:34:54,046 WARN L194 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 224 DAG size of output: 71 [2020-11-07 05:34:56,090 WARN L194 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 182 DAG size of output: 74 [2020-11-07 05:34:57,645 WARN L194 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 174 DAG size of output: 68 [2020-11-07 05:34:59,374 WARN L194 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 178 DAG size of output: 73 [2020-11-07 05:35:04,608 WARN L194 SmtUtils]: Spent 5.22 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:35:08,303 WARN L194 SmtUtils]: Spent 3.68 s on a formula simplification. DAG size of input: 253 DAG size of output: 80 [2020-11-07 05:35:10,994 WARN L194 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 232 DAG size of output: 77 [2020-11-07 05:35:16,085 WARN L194 SmtUtils]: Spent 5.07 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:35:21,135 WARN L194 SmtUtils]: Spent 5.04 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:35:22,611 WARN L194 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 174 DAG size of output: 68 [2020-11-07 05:35:24,227 WARN L194 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 224 DAG size of output: 71 [2020-11-07 05:35:26,417 WARN L194 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 176 DAG size of output: 74 [2020-11-07 05:35:28,505 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 225 DAG size of output: 73 [2020-11-07 05:35:29,913 WARN L194 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 177 DAG size of output: 69 [2020-11-07 05:35:35,069 WARN L194 SmtUtils]: Spent 5.14 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:35:36,818 WARN L194 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 224 DAG size of output: 80 [2020-11-07 05:35:38,342 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 172 DAG size of output: 70 [2020-11-07 05:35:41,120 WARN L194 SmtUtils]: Spent 2.77 s on a formula simplification. DAG size of input: 253 DAG size of output: 79 [2020-11-07 05:35:42,686 WARN L194 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 174 DAG size of output: 68 [2020-11-07 05:35:44,866 WARN L194 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 188 DAG size of output: 75 [2020-11-07 05:35:49,973 WARN L194 SmtUtils]: Spent 5.09 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:35:51,831 WARN L194 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 229 DAG size of output: 76 [2020-11-07 05:35:57,008 WARN L194 SmtUtils]: Spent 5.16 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:35:58,515 WARN L194 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 224 DAG size of output: 71 [2020-11-07 05:35:59,963 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 173 DAG size of output: 69 [2020-11-07 05:36:01,532 WARN L194 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 177 DAG size of output: 70 [2020-11-07 05:36:06,628 WARN L194 SmtUtils]: Spent 5.08 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:36:08,498 WARN L194 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 180 DAG size of output: 72 [2020-11-07 05:36:10,040 WARN L194 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 174 DAG size of output: 68 [2020-11-07 05:36:11,626 WARN L194 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 176 DAG size of output: 70 [2020-11-07 05:36:13,513 WARN L194 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 179 DAG size of output: 78 [2020-11-07 05:36:16,579 WARN L194 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 197 DAG size of output: 84 [2020-11-07 05:36:18,129 WARN L194 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 173 DAG size of output: 66 [2020-11-07 05:36:19,694 WARN L194 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 171 DAG size of output: 66 [2020-11-07 05:36:25,014 WARN L194 SmtUtils]: Spent 5.31 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:36:27,119 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 186 DAG size of output: 79 [2020-11-07 05:36:29,227 WARN L194 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 226 DAG size of output: 73 [2020-11-07 05:36:31,614 WARN L194 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 188 DAG size of output: 75 [2020-11-07 05:36:33,276 WARN L194 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 174 DAG size of output: 72 [2020-11-07 05:36:34,829 WARN L194 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 176 DAG size of output: 68 [2020-11-07 05:36:37,024 WARN L194 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 243 DAG size of output: 80 [2020-11-07 05:36:38,493 WARN L194 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 175 DAG size of output: 66 [2020-11-07 05:36:40,393 WARN L194 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 233 DAG size of output: 77 [2020-11-07 05:36:41,910 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 177 DAG size of output: 70 [2020-11-07 05:36:43,760 WARN L194 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 179 DAG size of output: 78 [2020-11-07 05:36:48,953 WARN L194 SmtUtils]: Spent 5.18 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:36:50,547 WARN L194 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 175 DAG size of output: 71 [2020-11-07 05:36:52,675 WARN L194 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 211 DAG size of output: 64 [2020-11-07 05:36:54,479 WARN L194 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 222 DAG size of output: 73 [2020-11-07 05:36:55,947 WARN L194 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 177 DAG size of output: 69 [2020-11-07 05:36:57,406 WARN L194 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 177 DAG size of output: 69 [2020-11-07 05:37:02,702 WARN L194 SmtUtils]: Spent 5.28 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:37:04,537 WARN L194 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 224 DAG size of output: 80 [2020-11-07 05:37:09,580 WARN L194 SmtUtils]: Spent 5.03 s on a formula simplification. DAG size of input: 323 DAG size of output: 85 [2020-11-07 05:37:14,533 WARN L194 SmtUtils]: Spent 4.94 s on a formula simplification. DAG size of input: 324 DAG size of output: 84 [2020-11-07 05:37:19,589 WARN L194 SmtUtils]: Spent 5.04 s on a formula simplification. DAG size of input: 323 DAG size of output: 85 [2020-11-07 05:37:21,386 WARN L194 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 222 DAG size of output: 73 [2020-11-07 05:37:23,198 WARN L194 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 225 DAG size of output: 72 [2020-11-07 05:37:25,017 WARN L194 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 222 DAG size of output: 73 [2020-11-07 05:37:30,051 WARN L194 SmtUtils]: Spent 5.02 s on a formula simplification. DAG size of input: 323 DAG size of output: 85 [2020-11-07 05:37:35,308 WARN L194 SmtUtils]: Spent 5.24 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:37:36,768 WARN L194 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 177 DAG size of output: 69 [2020-11-07 05:37:40,001 WARN L194 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 195 DAG size of output: 81 [2020-11-07 05:37:44,950 WARN L194 SmtUtils]: Spent 4.94 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:37:46,455 WARN L194 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 176 DAG size of output: 68 [2020-11-07 05:37:48,804 WARN L194 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 242 DAG size of output: 78 [2020-11-07 05:37:50,733 WARN L194 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 182 DAG size of output: 74 [2020-11-07 05:37:52,274 WARN L194 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 188 DAG size of output: 76 [2020-11-07 05:37:53,878 WARN L194 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 176 DAG size of output: 71 [2020-11-07 05:37:57,421 WARN L194 SmtUtils]: Spent 3.53 s on a formula simplification. DAG size of input: 239 DAG size of output: 80 [2020-11-07 05:38:00,592 WARN L194 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 257 DAG size of output: 81 [2020-11-07 05:38:02,063 WARN L194 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 176 DAG size of output: 70 [2020-11-07 05:38:03,929 WARN L194 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 232 DAG size of output: 72 [2020-11-07 05:38:05,728 WARN L194 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 178 DAG size of output: 71 [2020-11-07 05:38:10,693 WARN L194 SmtUtils]: Spent 4.95 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:38:12,645 WARN L194 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 186 DAG size of output: 84 [2020-11-07 05:38:14,437 WARN L194 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 176 DAG size of output: 68 [2020-11-07 05:38:15,808 WARN L194 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 176 DAG size of output: 68 [2020-11-07 05:38:18,070 WARN L194 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 183 DAG size of output: 82 [2020-11-07 05:38:19,659 WARN L194 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 178 DAG size of output: 73 [2020-11-07 05:38:21,387 WARN L194 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 224 DAG size of output: 80 [2020-11-07 05:38:22,763 WARN L194 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 176 DAG size of output: 69 [2020-11-07 05:38:27,724 WARN L194 SmtUtils]: Spent 4.95 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:38:32,731 WARN L194 SmtUtils]: Spent 4.99 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:38:34,429 WARN L194 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 222 DAG size of output: 73 [2020-11-07 05:38:39,216 WARN L194 SmtUtils]: Spent 4.77 s on a formula simplification. DAG size of input: 323 DAG size of output: 85 [2020-11-07 05:38:43,918 WARN L194 SmtUtils]: Spent 4.69 s on a formula simplification. DAG size of input: 324 DAG size of output: 84 [2020-11-07 05:38:48,718 WARN L194 SmtUtils]: Spent 4.79 s on a formula simplification. DAG size of input: 323 DAG size of output: 85 [2020-11-07 05:38:50,427 WARN L194 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 225 DAG size of output: 72 [2020-11-07 05:38:52,764 WARN L194 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 179 DAG size of output: 78 [2020-11-07 05:38:56,117 WARN L194 SmtUtils]: Spent 3.34 s on a formula simplification. DAG size of input: 195 DAG size of output: 81 [2020-11-07 05:39:01,099 WARN L194 SmtUtils]: Spent 4.97 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:39:02,607 WARN L194 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 175 DAG size of output: 70 [2020-11-07 05:39:04,011 WARN L194 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 180 DAG size of output: 72 [2020-11-07 05:39:05,601 WARN L194 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 178 DAG size of output: 73 [2020-11-07 05:39:10,063 WARN L194 SmtUtils]: Spent 4.45 s on a formula simplification. DAG size of input: 249 DAG size of output: 83 [2020-11-07 05:39:12,644 WARN L194 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 232 DAG size of output: 77 [2020-11-07 05:39:14,272 WARN L194 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 195 DAG size of output: 78 [2020-11-07 05:39:17,339 WARN L194 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 210 DAG size of output: 81 [2020-11-07 05:39:18,856 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 186 DAG size of output: 73 [2020-11-07 05:39:20,369 WARN L194 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 176 DAG size of output: 68 [2020-11-07 05:39:22,588 WARN L194 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 193 DAG size of output: 77 [2020-11-07 05:39:27,581 WARN L194 SmtUtils]: Spent 4.98 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:39:29,414 WARN L194 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 233 DAG size of output: 77 [2020-11-07 05:39:34,412 WARN L194 SmtUtils]: Spent 4.99 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:39:36,033 WARN L194 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 177 DAG size of output: 71 [2020-11-07 05:39:37,772 WARN L194 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 224 DAG size of output: 80 [2020-11-07 05:39:39,486 WARN L194 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 222 DAG size of output: 73 [2020-11-07 05:39:44,300 WARN L194 SmtUtils]: Spent 4.80 s on a formula simplification. DAG size of input: 323 DAG size of output: 85 [2020-11-07 05:39:46,371 WARN L194 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 224 DAG size of output: 71 [2020-11-07 05:39:48,858 WARN L194 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 187 DAG size of output: 81 [2020-11-07 05:39:53,861 WARN L194 SmtUtils]: Spent 4.99 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:39:55,387 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 178 DAG size of output: 74 [2020-11-07 05:39:56,886 WARN L194 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 178 DAG size of output: 73 [2020-11-07 05:39:58,382 WARN L194 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 181 DAG size of output: 72 [2020-11-07 05:40:00,393 WARN L194 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 187 DAG size of output: 80 [2020-11-07 05:40:02,274 WARN L194 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 177 DAG size of output: 73 [2020-11-07 05:40:03,808 WARN L194 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 176 DAG size of output: 70 [2020-11-07 05:40:08,829 WARN L194 SmtUtils]: Spent 5.01 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:40:10,705 WARN L194 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 224 DAG size of output: 70 [2020-11-07 05:40:12,274 WARN L194 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 179 DAG size of output: 72 [2020-11-07 05:40:13,914 WARN L194 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 177 DAG size of output: 70 [2020-11-07 05:40:15,434 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 175 DAG size of output: 70 [2020-11-07 05:40:16,923 WARN L194 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 176 DAG size of output: 68 [2020-11-07 05:40:18,571 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 223 DAG size of output: 74 [2020-11-07 05:40:20,445 WARN L194 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 177 DAG size of output: 73 [2020-11-07 05:40:22,934 WARN L194 SmtUtils]: Spent 2.48 s on a formula simplification. DAG size of input: 189 DAG size of output: 84 [2020-11-07 05:40:25,037 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 184 DAG size of output: 68 [2020-11-07 05:40:28,117 WARN L194 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 200 DAG size of output: 85 [2020-11-07 05:40:30,722 WARN L194 SmtUtils]: Spent 2.59 s on a formula simplification. DAG size of input: 244 DAG size of output: 82 [2020-11-07 05:40:32,645 WARN L194 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 179 DAG size of output: 74 [2020-11-07 05:40:34,277 WARN L194 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 175 DAG size of output: 69 [2020-11-07 05:40:35,878 WARN L194 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 178 DAG size of output: 73 [2020-11-07 05:40:38,805 WARN L194 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 195 DAG size of output: 81 [2020-11-07 05:40:40,640 WARN L194 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 176 DAG size of output: 68 [2020-11-07 05:40:42,402 WARN L194 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 224 DAG size of output: 80 [2020-11-07 05:40:44,426 WARN L194 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 211 DAG size of output: 64 [2020-11-07 05:40:49,307 WARN L194 SmtUtils]: Spent 4.87 s on a formula simplification. DAG size of input: 323 DAG size of output: 85 [2020-11-07 05:40:54,171 WARN L194 SmtUtils]: Spent 4.85 s on a formula simplification. DAG size of input: 323 DAG size of output: 85 [2020-11-07 05:40:56,186 WARN L194 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 211 DAG size of output: 64 [2020-11-07 05:40:58,201 WARN L194 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 211 DAG size of output: 64 [2020-11-07 05:40:59,939 WARN L194 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 225 DAG size of output: 72 [2020-11-07 05:41:01,454 WARN L194 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 181 DAG size of output: 72 [2020-11-07 05:41:06,504 WARN L194 SmtUtils]: Spent 5.04 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:41:08,379 WARN L194 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 179 DAG size of output: 73 [2020-11-07 05:41:10,331 WARN L194 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 195 DAG size of output: 75 [2020-11-07 05:41:12,523 WARN L194 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 176 DAG size of output: 74 [2020-11-07 05:41:17,311 WARN L194 SmtUtils]: Spent 4.78 s on a formula simplification. DAG size of input: 324 DAG size of output: 84 [2020-11-07 05:41:22,381 WARN L194 SmtUtils]: Spent 5.06 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:41:25,005 WARN L194 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 235 DAG size of output: 76 [2020-11-07 05:41:26,548 WARN L194 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 186 DAG size of output: 73 [2020-11-07 05:41:31,351 WARN L194 SmtUtils]: Spent 4.79 s on a formula simplification. DAG size of input: 324 DAG size of output: 84 [2020-11-07 05:41:33,118 WARN L194 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 224 DAG size of output: 80 [2020-11-07 05:41:34,860 WARN L194 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 225 DAG size of output: 72 [2020-11-07 05:41:36,611 WARN L194 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 225 DAG size of output: 72 [2020-11-07 05:41:41,511 WARN L194 SmtUtils]: Spent 4.88 s on a formula simplification. DAG size of input: 323 DAG size of output: 85 [2020-11-07 05:41:43,276 WARN L194 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 224 DAG size of output: 80 [2020-11-07 05:41:45,022 WARN L194 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 222 DAG size of output: 73 [2020-11-07 05:41:49,917 WARN L194 SmtUtils]: Spent 4.88 s on a formula simplification. DAG size of input: 323 DAG size of output: 85 [2020-11-07 05:41:51,658 WARN L194 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 222 DAG size of output: 73 [2020-11-07 05:41:56,568 WARN L194 SmtUtils]: Spent 4.90 s on a formula simplification. DAG size of input: 323 DAG size of output: 85 [2020-11-07 05:41:58,308 WARN L194 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 222 DAG size of output: 73 [2020-11-07 05:41:59,892 WARN L194 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 173 DAG size of output: 68 [2020-11-07 05:42:01,946 WARN L194 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 177 DAG size of output: 70 [2020-11-07 05:42:03,573 WARN L194 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 175 DAG size of output: 71 [2020-11-07 05:42:09,148 WARN L194 SmtUtils]: Spent 5.56 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:42:11,969 WARN L194 SmtUtils]: Spent 2.81 s on a formula simplification. DAG size of input: 235 DAG size of output: 76 [2020-11-07 05:42:17,428 WARN L194 SmtUtils]: Spent 5.45 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:42:19,515 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 180 DAG size of output: 72 [2020-11-07 05:42:21,163 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 177 DAG size of output: 73 [2020-11-07 05:42:22,968 WARN L194 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 225 DAG size of output: 72 [2020-11-07 05:42:27,902 WARN L194 SmtUtils]: Spent 4.92 s on a formula simplification. DAG size of input: 324 DAG size of output: 84 [2020-11-07 05:42:33,105 WARN L194 SmtUtils]: Spent 5.19 s on a formula simplification. DAG size of input: 329 DAG size of output: 85 [2020-11-07 05:42:34,747 WARN L194 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 179 DAG size of output: 69 [2020-11-07 05:42:37,161 WARN L194 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 176 DAG size of output: 74 [2020-11-07 05:42:42,429 WARN L194 SmtUtils]: Spent 5.25 s on a formula simplification. DAG size of input: 323 DAG size of output: 85