/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_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:28:04,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:28:04,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:28:04,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 05:28:04,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:28:04,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:28:04,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:28:04,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:28:04,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:28:04,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:28:04,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:28:04,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:28:04,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:28:04,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:28:04,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:28:04,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:28:04,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:28:04,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:28:04,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:28:04,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:28:04,485 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 05:28:04,498 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:28:04,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:28:04,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:28:04,500 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:28:04,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:28:04,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:28:04,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:28:04,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:28:04,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:28:04,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:28:04,502 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:28:04,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:28:04,502 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:28:04,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:28:04,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:28:04,503 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:28:04,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:28:04,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:28:04,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:28:04,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:28:04,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:28:04,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:28:04,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:28:04,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:28:04,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:28:04,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:28:04,963 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:28:04,964 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:28:04,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label36.c [2020-11-07 05:28:05,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b402f96e5/2dd163b947994749b8e3f7a6a4b0e963/FLAG2f9bd5e46 [2020-11-07 05:28:05,796 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:28:05,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label36.c [2020-11-07 05:28:05,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b402f96e5/2dd163b947994749b8e3f7a6a4b0e963/FLAG2f9bd5e46 [2020-11-07 05:28:06,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b402f96e5/2dd163b947994749b8e3f7a6a4b0e963 [2020-11-07 05:28:06,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:28:06,056 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:28:06,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:28:06,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:28:06,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:28:06,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:28:06" (1/1) ... [2020-11-07 05:28:06,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c017f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:06, skipping insertion in model container [2020-11-07 05:28:06,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:28:06" (1/1) ... [2020-11-07 05:28:06,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:28:06,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:28:06,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:28:06,602 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:28:06,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:28:06,781 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:28:06,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:06 WrapperNode [2020-11-07 05:28:06,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:28:06,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:28:06,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:28:06,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:28:06,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:06" (1/1) ... [2020-11-07 05:28:06,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:06" (1/1) ... [2020-11-07 05:28:06,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:06" (1/1) ... [2020-11-07 05:28:06,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:06" (1/1) ... [2020-11-07 05:28:06,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:06" (1/1) ... [2020-11-07 05:28:06,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:06" (1/1) ... [2020-11-07 05:28:06,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:06" (1/1) ... [2020-11-07 05:28:06,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:28:06,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:28:06,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:28:06,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:28:06,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:06" (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 05:28:07,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:28:07,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:28:07,012 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:28:07,012 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-11-07 05:28:07,012 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:28:07,013 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-11-07 05:28:07,013 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:28:07,014 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:28:07,014 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:28:07,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:28:07,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:28:07,014 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 05:28:07,014 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:28:07,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:28:07,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:28:07,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:28:07,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:28:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:28:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:28:08,669 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:28:08,669 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 05:28:08,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:28:08 BoogieIcfgContainer [2020-11-07 05:28:08,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:28:08,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:28:08,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:28:08,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:28:08,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:28:06" (1/3) ... [2020-11-07 05:28:08,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef2758a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:28:08, skipping insertion in model container [2020-11-07 05:28:08,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:06" (2/3) ... [2020-11-07 05:28:08,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef2758a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:28:08, skipping insertion in model container [2020-11-07 05:28:08,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:28:08" (3/3) ... [2020-11-07 05:28:08,687 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label36.c [2020-11-07 05:28:08,706 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:28:08,715 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:28:08,736 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:28:08,772 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:28:08,772 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:28:08,773 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:28:08,773 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:28:08,773 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:28:08,773 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:28:08,773 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:28:08,773 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:28:08,818 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states. [2020-11-07 05:28:08,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-07 05:28:08,882 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:28:08,884 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] [2020-11-07 05:28:08,884 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:28:08,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:28:08,896 INFO L82 PathProgramCache]: Analyzing trace with hash 2084118926, now seen corresponding path program 1 times [2020-11-07 05:28:08,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:28:08,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250346655] [2020-11-07 05:28:08,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:28:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:09,576 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:28:09,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:28:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:09,711 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 05:28:09,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250346655] [2020-11-07 05:28:09,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:28:09,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 05:28:09,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748964091] [2020-11-07 05:28:09,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 05:28:09,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:28:09,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 05:28:09,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:28:09,749 INFO L87 Difference]: Start difference. First operand 537 states. Second operand 5 states. [2020-11-07 05:28:10,035 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:28:13,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:28:13,846 INFO L93 Difference]: Finished difference Result 1373 states and 1909 transitions. [2020-11-07 05:28:13,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 05:28:13,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-11-07 05:28:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:28:13,887 INFO L225 Difference]: With dead ends: 1373 [2020-11-07 05:28:13,887 INFO L226 Difference]: Without dead ends: 790 [2020-11-07 05:28:13,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:28:13,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2020-11-07 05:28:14,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 755. [2020-11-07 05:28:14,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2020-11-07 05:28:14,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 923 transitions. [2020-11-07 05:28:14,160 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 923 transitions. Word has length 139 [2020-11-07 05:28:14,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:28:14,164 INFO L481 AbstractCegarLoop]: Abstraction has 755 states and 923 transitions. [2020-11-07 05:28:14,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 05:28:14,165 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 923 transitions. [2020-11-07 05:28:14,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-11-07 05:28:14,182 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:28:14,183 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] [2020-11-07 05:28:14,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:28:14,184 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:28:14,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:28:14,185 INFO L82 PathProgramCache]: Analyzing trace with hash -115759860, now seen corresponding path program 1 times [2020-11-07 05:28:14,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:28:14,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347463198] [2020-11-07 05:28:14,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:28:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:14,672 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:28:14,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:28:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:14,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:28:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:15,017 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 05:28:15,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347463198] [2020-11-07 05:28:15,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:28:15,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:28:15,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443828601] [2020-11-07 05:28:15,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:28:15,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:28:15,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:28:15,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:28:15,022 INFO L87 Difference]: Start difference. First operand 755 states and 923 transitions. Second operand 11 states. [2020-11-07 05:28:15,222 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:28:15,542 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:28:15,756 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:28:15,930 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:28:16,362 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 05:28:16,607 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:28:21,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:28:21,281 INFO L93 Difference]: Finished difference Result 2962 states and 3993 transitions. [2020-11-07 05:28:21,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:28:21,282 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 160 [2020-11-07 05:28:21,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:28:21,314 INFO L225 Difference]: With dead ends: 2962 [2020-11-07 05:28:21,315 INFO L226 Difference]: Without dead ends: 2130 [2020-11-07 05:28:21,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:28:21,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2020-11-07 05:28:21,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 1776. [2020-11-07 05:28:21,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1776 states. [2020-11-07 05:28:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2135 transitions. [2020-11-07 05:28:21,770 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2135 transitions. Word has length 160 [2020-11-07 05:28:21,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:28:21,770 INFO L481 AbstractCegarLoop]: Abstraction has 1776 states and 2135 transitions. [2020-11-07 05:28:21,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:28:21,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2135 transitions. [2020-11-07 05:28:21,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-11-07 05:28:21,779 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:28:21,780 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2020-11-07 05:28:21,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:28:21,781 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:28:21,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:28:21,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1592089908, now seen corresponding path program 1 times [2020-11-07 05:28:21,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:28:21,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130004193] [2020-11-07 05:28:21,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:28:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:22,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:28:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:22,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:28:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:28:22,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130004193] [2020-11-07 05:28:22,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:28:22,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:28:22,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700946662] [2020-11-07 05:28:22,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:28:22,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:28:22,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:28:22,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:28:22,475 INFO L87 Difference]: Start difference. First operand 1776 states and 2135 transitions. Second operand 11 states. [2020-11-07 05:28:22,693 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:28:23,001 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:28:23,234 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:28:23,708 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:28:23,928 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:28:24,827 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:28:29,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:28:29,174 INFO L93 Difference]: Finished difference Result 2391 states and 2803 transitions. [2020-11-07 05:28:29,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:28:29,175 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 173 [2020-11-07 05:28:29,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:28:29,190 INFO L225 Difference]: With dead ends: 2391 [2020-11-07 05:28:29,190 INFO L226 Difference]: Without dead ends: 1991 [2020-11-07 05:28:29,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:28:29,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2020-11-07 05:28:29,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1768. [2020-11-07 05:28:29,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1768 states. [2020-11-07 05:28:29,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2104 transitions. [2020-11-07 05:28:29,597 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2104 transitions. Word has length 173 [2020-11-07 05:28:29,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:28:29,598 INFO L481 AbstractCegarLoop]: Abstraction has 1768 states and 2104 transitions. [2020-11-07 05:28:29,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:28:29,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2104 transitions. [2020-11-07 05:28:29,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-11-07 05:28:29,604 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:28:29,605 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-07 05:28:29,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:28:29,605 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:28:29,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:28:29,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1948868314, now seen corresponding path program 1 times [2020-11-07 05:28:29,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:28:29,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915567608] [2020-11-07 05:28:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:28:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:29,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:28:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:29,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:28:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:29,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:28:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-07 05:28:29,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915567608] [2020-11-07 05:28:29,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:28:29,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:28:29,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737382822] [2020-11-07 05:28:29,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:28:29,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:28:29,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:28:29,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:28:29,849 INFO L87 Difference]: Start difference. First operand 1768 states and 2104 transitions. Second operand 7 states. [2020-11-07 05:28:32,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:28:32,958 INFO L93 Difference]: Finished difference Result 4290 states and 5232 transitions. [2020-11-07 05:28:32,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 05:28:32,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-11-07 05:28:32,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:28:32,981 INFO L225 Difference]: With dead ends: 4290 [2020-11-07 05:28:32,981 INFO L226 Difference]: Without dead ends: 2554 [2020-11-07 05:28:32,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:28:32,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2020-11-07 05:28:33,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2220. [2020-11-07 05:28:33,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2220 states. [2020-11-07 05:28:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 2607 transitions. [2020-11-07 05:28:33,476 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 2607 transitions. Word has length 177 [2020-11-07 05:28:33,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:28:33,477 INFO L481 AbstractCegarLoop]: Abstraction has 2220 states and 2607 transitions. [2020-11-07 05:28:33,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:28:33,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 2607 transitions. [2020-11-07 05:28:33,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-11-07 05:28:33,486 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:28:33,486 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:33,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:28:33,487 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:28:33,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:28:33,487 INFO L82 PathProgramCache]: Analyzing trace with hash 835335994, now seen corresponding path program 1 times [2020-11-07 05:28:33,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:28:33,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837205178] [2020-11-07 05:28:33,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:28:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:33,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:28:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:33,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:28:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:33,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:28:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:34,204 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-07 05:28:34,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837205178] [2020-11-07 05:28:34,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:28:34,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:28:34,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297197933] [2020-11-07 05:28:34,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:28:34,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:28:34,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:28:34,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:28:34,207 INFO L87 Difference]: Start difference. First operand 2220 states and 2607 transitions. Second operand 11 states. [2020-11-07 05:28:34,398 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:28:34,556 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:28:35,130 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:28:35,792 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 05:28:36,261 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:28:41,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:28:41,014 INFO L93 Difference]: Finished difference Result 5467 states and 6554 transitions. [2020-11-07 05:28:41,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:28:41,015 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 188 [2020-11-07 05:28:41,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:28:41,037 INFO L225 Difference]: With dead ends: 5467 [2020-11-07 05:28:41,037 INFO L226 Difference]: Without dead ends: 3298 [2020-11-07 05:28:41,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:28:41,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2020-11-07 05:28:41,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 2545. [2020-11-07 05:28:41,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2545 states. [2020-11-07 05:28:41,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 2968 transitions. [2020-11-07 05:28:41,604 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 2968 transitions. Word has length 188 [2020-11-07 05:28:41,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:28:41,604 INFO L481 AbstractCegarLoop]: Abstraction has 2545 states and 2968 transitions. [2020-11-07 05:28:41,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:28:41,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 2968 transitions. [2020-11-07 05:28:41,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-11-07 05:28:41,614 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:28:41,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:41,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 05:28:41,615 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:28:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:28:41,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1473813448, now seen corresponding path program 1 times [2020-11-07 05:28:41,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:28:41,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976111006] [2020-11-07 05:28:41,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:28:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:41,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:28:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:41,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:28:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:41,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:28:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:41,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-11-07 05:28:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:41,899 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 64 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-07 05:28:41,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976111006] [2020-11-07 05:28:41,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:28:41,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-07 05:28:41,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062499073] [2020-11-07 05:28:41,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 05:28:41,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:28:41,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 05:28:41,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-07 05:28:41,902 INFO L87 Difference]: Start difference. First operand 2545 states and 2968 transitions. Second operand 9 states. [2020-11-07 05:28:42,825 WARN L194 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:28:44,817 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:28:49,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:28:49,443 INFO L93 Difference]: Finished difference Result 8196 states and 9648 transitions. [2020-11-07 05:28:49,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-07 05:28:49,444 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 206 [2020-11-07 05:28:49,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:28:49,480 INFO L225 Difference]: With dead ends: 8196 [2020-11-07 05:28:49,481 INFO L226 Difference]: Without dead ends: 5824 [2020-11-07 05:28:49,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2020-11-07 05:28:49,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-11-07 05:28:50,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 4820. [2020-11-07 05:28:50,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4820 states. [2020-11-07 05:28:50,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4820 states to 4820 states and 5599 transitions. [2020-11-07 05:28:50,668 INFO L78 Accepts]: Start accepts. Automaton has 4820 states and 5599 transitions. Word has length 206 [2020-11-07 05:28:50,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:28:50,669 INFO L481 AbstractCegarLoop]: Abstraction has 4820 states and 5599 transitions. [2020-11-07 05:28:50,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 05:28:50,669 INFO L276 IsEmpty]: Start isEmpty. Operand 4820 states and 5599 transitions. [2020-11-07 05:28:50,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-11-07 05:28:50,683 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:28:50,683 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-07 05:28:50,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 05:28:50,684 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:28:50,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:28:50,684 INFO L82 PathProgramCache]: Analyzing trace with hash -500283455, now seen corresponding path program 1 times [2020-11-07 05:28:50,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:28:50,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170527199] [2020-11-07 05:28:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:28:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:50,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:28:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:50,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:28:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:50,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:28:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:50,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-11-07 05:28:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:28:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 68 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-07 05:28:51,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170527199] [2020-11-07 05:28:51,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:28:51,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:28:51,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96319640] [2020-11-07 05:28:51,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:28:51,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:28:51,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:28:51,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:28:51,068 INFO L87 Difference]: Start difference. First operand 4820 states and 5599 transitions. Second operand 10 states. [2020-11-07 05:28:51,525 WARN L194 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-11-07 05:28:52,293 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:28:52,771 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:28:53,562 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:28:53,750 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:28:54,039 WARN L194 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-11-07 05:28:56,244 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:28:59,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:28:59,525 INFO L93 Difference]: Finished difference Result 11814 states and 13895 transitions. [2020-11-07 05:28:59,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-07 05:28:59,526 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 210 [2020-11-07 05:28:59,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:28:59,569 INFO L225 Difference]: With dead ends: 11814 [2020-11-07 05:28:59,570 INFO L226 Difference]: Without dead ends: 7167 [2020-11-07 05:28:59,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2020-11-07 05:28:59,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7167 states. [2020-11-07 05:29:00,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7167 to 5798. [2020-11-07 05:29:00,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5798 states. [2020-11-07 05:29:00,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5798 states to 5798 states and 6730 transitions. [2020-11-07 05:29:00,809 INFO L78 Accepts]: Start accepts. Automaton has 5798 states and 6730 transitions. Word has length 210 [2020-11-07 05:29:00,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:29:00,809 INFO L481 AbstractCegarLoop]: Abstraction has 5798 states and 6730 transitions. [2020-11-07 05:29:00,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:29:00,809 INFO L276 IsEmpty]: Start isEmpty. Operand 5798 states and 6730 transitions. [2020-11-07 05:29:00,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-11-07 05:29:00,826 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:29:00,827 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, 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] [2020-11-07 05:29:00,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 05:29:00,827 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:29:00,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:29:00,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1876623138, now seen corresponding path program 1 times [2020-11-07 05:29:00,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:29:00,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942780922] [2020-11-07 05:29:00,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:29:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:00,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:29:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:00,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:29:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:00,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:29:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:01,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-11-07 05:29:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:01,081 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-07 05:29:01,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942780922] [2020-11-07 05:29:01,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:29:01,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:29:01,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184004595] [2020-11-07 05:29:01,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:29:01,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:29:01,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:29:01,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:29:01,083 INFO L87 Difference]: Start difference. First operand 5798 states and 6730 transitions. Second operand 7 states. [2020-11-07 05:29:04,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:29:04,886 INFO L93 Difference]: Finished difference Result 12885 states and 15082 transitions. [2020-11-07 05:29:04,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 05:29:04,890 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-11-07 05:29:04,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:29:04,929 INFO L225 Difference]: With dead ends: 12885 [2020-11-07 05:29:04,929 INFO L226 Difference]: Without dead ends: 7260 [2020-11-07 05:29:04,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:29:04,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7260 states. [2020-11-07 05:29:06,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7260 to 7156. [2020-11-07 05:29:06,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7156 states. [2020-11-07 05:29:06,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7156 states to 7156 states and 8313 transitions. [2020-11-07 05:29:06,678 INFO L78 Accepts]: Start accepts. Automaton has 7156 states and 8313 transitions. Word has length 217 [2020-11-07 05:29:06,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:29:06,678 INFO L481 AbstractCegarLoop]: Abstraction has 7156 states and 8313 transitions. [2020-11-07 05:29:06,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:29:06,679 INFO L276 IsEmpty]: Start isEmpty. Operand 7156 states and 8313 transitions. [2020-11-07 05:29:06,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-11-07 05:29:06,695 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:29:06,696 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 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] [2020-11-07 05:29:06,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 05:29:06,696 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:29:06,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:29:06,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1698872824, now seen corresponding path program 1 times [2020-11-07 05:29:06,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:29:06,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926376845] [2020-11-07 05:29:06,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:29:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:06,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:29:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:06,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:29:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:06,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:29:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:06,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-11-07 05:29:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 77 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-07 05:29:07,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926376845] [2020-11-07 05:29:07,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:29:07,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:29:07,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992422474] [2020-11-07 05:29:07,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:29:07,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:29:07,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:29:07,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:29:07,022 INFO L87 Difference]: Start difference. First operand 7156 states and 8313 transitions. Second operand 8 states. [2020-11-07 05:29:07,754 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:29:08,820 WARN L194 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:29:12,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:29:12,199 INFO L93 Difference]: Finished difference Result 14516 states and 16891 transitions. [2020-11-07 05:29:12,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 05:29:12,208 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 224 [2020-11-07 05:29:12,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:29:12,256 INFO L225 Difference]: With dead ends: 14516 [2020-11-07 05:29:12,256 INFO L226 Difference]: Without dead ends: 7533 [2020-11-07 05:29:12,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:29:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7533 states. [2020-11-07 05:29:13,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7533 to 7021. [2020-11-07 05:29:13,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7021 states. [2020-11-07 05:29:13,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 8122 transitions. [2020-11-07 05:29:13,853 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 8122 transitions. Word has length 224 [2020-11-07 05:29:13,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:29:13,854 INFO L481 AbstractCegarLoop]: Abstraction has 7021 states and 8122 transitions. [2020-11-07 05:29:13,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:29:13,854 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 8122 transitions. [2020-11-07 05:29:13,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-11-07 05:29:13,868 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:29:13,868 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 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] [2020-11-07 05:29:13,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 05:29:13,869 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:29:13,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:29:13,869 INFO L82 PathProgramCache]: Analyzing trace with hash 41473747, now seen corresponding path program 1 times [2020-11-07 05:29:13,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:29:13,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057819394] [2020-11-07 05:29:13,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:29:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:14,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:29:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:14,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:29:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:14,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:29:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:14,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 05:29:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 82 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-07 05:29:14,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057819394] [2020-11-07 05:29:14,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:29:14,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:29:14,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787153165] [2020-11-07 05:29:14,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:29:14,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:29:14,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:29:14,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:29:14,662 INFO L87 Difference]: Start difference. First operand 7021 states and 8122 transitions. Second operand 11 states. [2020-11-07 05:29:16,087 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:29:16,314 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:29:18,474 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:29:21,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:29:21,466 INFO L93 Difference]: Finished difference Result 14713 states and 17066 transitions. [2020-11-07 05:29:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 05:29:21,467 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 240 [2020-11-07 05:29:21,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:29:21,500 INFO L225 Difference]: With dead ends: 14713 [2020-11-07 05:29:21,500 INFO L226 Difference]: Without dead ends: 6599 [2020-11-07 05:29:21,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2020-11-07 05:29:21,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6599 states. [2020-11-07 05:29:23,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6599 to 6432. [2020-11-07 05:29:23,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6432 states. [2020-11-07 05:29:23,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6432 states to 6432 states and 7133 transitions. [2020-11-07 05:29:23,276 INFO L78 Accepts]: Start accepts. Automaton has 6432 states and 7133 transitions. Word has length 240 [2020-11-07 05:29:23,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:29:23,277 INFO L481 AbstractCegarLoop]: Abstraction has 6432 states and 7133 transitions. [2020-11-07 05:29:23,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:29:23,277 INFO L276 IsEmpty]: Start isEmpty. Operand 6432 states and 7133 transitions. [2020-11-07 05:29:23,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-11-07 05:29:23,286 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:29:23,286 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-11-07 05:29:23,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 05:29:23,286 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:29:23,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:29:23,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1517271380, now seen corresponding path program 1 times [2020-11-07 05:29:23,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:29:23,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327788856] [2020-11-07 05:29:23,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:29:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:23,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:29:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:23,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:29:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:23,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 05:29:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:23,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 05:29:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:23,967 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 89 proven. 24 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-11-07 05:29:23,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327788856] [2020-11-07 05:29:23,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:29:23,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-11-07 05:29:23,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775827664] [2020-11-07 05:29:23,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 05:29:23,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:29:23,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 05:29:23,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-11-07 05:29:23,970 INFO L87 Difference]: Start difference. First operand 6432 states and 7133 transitions. Second operand 14 states. [2020-11-07 05:29:24,192 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:29:24,483 WARN L194 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 95 [2020-11-07 05:29:25,499 WARN L194 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 97 [2020-11-07 05:29:26,638 WARN L194 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2020-11-07 05:29:27,493 WARN L194 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-11-07 05:29:27,710 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:29:31,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:29:31,815 INFO L93 Difference]: Finished difference Result 13195 states and 14631 transitions. [2020-11-07 05:29:31,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 05:29:31,816 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 257 [2020-11-07 05:29:31,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:29:31,851 INFO L225 Difference]: With dead ends: 13195 [2020-11-07 05:29:31,851 INFO L226 Difference]: Without dead ends: 6706 [2020-11-07 05:29:31,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2020-11-07 05:29:31,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6706 states. [2020-11-07 05:29:33,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6706 to 6405. [2020-11-07 05:29:33,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6405 states. [2020-11-07 05:29:33,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6405 states to 6405 states and 7086 transitions. [2020-11-07 05:29:33,212 INFO L78 Accepts]: Start accepts. Automaton has 6405 states and 7086 transitions. Word has length 257 [2020-11-07 05:29:33,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:29:33,212 INFO L481 AbstractCegarLoop]: Abstraction has 6405 states and 7086 transitions. [2020-11-07 05:29:33,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 05:29:33,212 INFO L276 IsEmpty]: Start isEmpty. Operand 6405 states and 7086 transitions. [2020-11-07 05:29:33,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-11-07 05:29:33,224 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:29:33,224 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 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] [2020-11-07 05:29:33,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 05:29:33,224 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:29:33,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:29:33,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1382119098, now seen corresponding path program 1 times [2020-11-07 05:29:33,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:29:33,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822414128] [2020-11-07 05:29:33,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:29:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:33,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:29:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:33,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:29:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:33,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 05:29:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:33,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 05:29:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:33,605 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 128 proven. 16 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-07 05:29:33,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822414128] [2020-11-07 05:29:33,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:29:33,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:29:33,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070274919] [2020-11-07 05:29:33,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:29:33,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:29:33,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:29:33,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:29:33,609 INFO L87 Difference]: Start difference. First operand 6405 states and 7086 transitions. Second operand 10 states. [2020-11-07 05:29:33,931 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:29:34,557 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:29:35,082 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:29:35,656 WARN L194 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-11-07 05:29:35,907 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:29:36,921 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:29:37,640 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:29:38,319 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:29:38,730 WARN L194 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:29:40,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:29:40,722 INFO L93 Difference]: Finished difference Result 13086 states and 14487 transitions. [2020-11-07 05:29:40,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-07 05:29:40,728 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 260 [2020-11-07 05:29:40,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:29:40,750 INFO L225 Difference]: With dead ends: 13086 [2020-11-07 05:29:40,750 INFO L226 Difference]: Without dead ends: 6697 [2020-11-07 05:29:40,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2020-11-07 05:29:40,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6697 states. [2020-11-07 05:29:42,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6697 to 6036. [2020-11-07 05:29:42,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6036 states. [2020-11-07 05:29:42,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6036 states to 6036 states and 6440 transitions. [2020-11-07 05:29:42,022 INFO L78 Accepts]: Start accepts. Automaton has 6036 states and 6440 transitions. Word has length 260 [2020-11-07 05:29:42,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:29:42,023 INFO L481 AbstractCegarLoop]: Abstraction has 6036 states and 6440 transitions. [2020-11-07 05:29:42,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:29:42,023 INFO L276 IsEmpty]: Start isEmpty. Operand 6036 states and 6440 transitions. [2020-11-07 05:29:42,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-11-07 05:29:42,028 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:29:42,029 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 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, 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] [2020-11-07 05:29:42,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 05:29:42,029 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:29:42,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:29:42,029 INFO L82 PathProgramCache]: Analyzing trace with hash 718397992, now seen corresponding path program 1 times [2020-11-07 05:29:42,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:29:42,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871504607] [2020-11-07 05:29:42,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:29:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:42,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:29:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:42,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:29:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:42,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 05:29:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:42,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 05:29:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 173 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-11-07 05:29:42,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871504607] [2020-11-07 05:29:42,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:29:42,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:29:42,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728689811] [2020-11-07 05:29:42,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:29:42,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:29:42,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:29:42,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:29:42,436 INFO L87 Difference]: Start difference. First operand 6036 states and 6440 transitions. Second operand 8 states. [2020-11-07 05:29:42,606 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:29:42,768 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:29:43,981 WARN L194 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:29:45,010 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:29:46,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:29:46,660 INFO L93 Difference]: Finished difference Result 12000 states and 12804 transitions. [2020-11-07 05:29:46,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:29:46,661 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 300 [2020-11-07 05:29:46,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:29:46,681 INFO L225 Difference]: With dead ends: 12000 [2020-11-07 05:29:46,681 INFO L226 Difference]: Without dead ends: 6137 [2020-11-07 05:29:46,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:29:46,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6137 states. [2020-11-07 05:29:47,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6137 to 5768. [2020-11-07 05:29:47,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5768 states. [2020-11-07 05:29:47,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 6128 transitions. [2020-11-07 05:29:47,942 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 6128 transitions. Word has length 300 [2020-11-07 05:29:47,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:29:47,943 INFO L481 AbstractCegarLoop]: Abstraction has 5768 states and 6128 transitions. [2020-11-07 05:29:47,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:29:47,943 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 6128 transitions. [2020-11-07 05:29:47,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-11-07 05:29:47,950 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:29:47,950 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-11-07 05:29:47,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 05:29:47,951 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:29:47,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:29:47,951 INFO L82 PathProgramCache]: Analyzing trace with hash 122295907, now seen corresponding path program 1 times [2020-11-07 05:29:47,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:29:47,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442370871] [2020-11-07 05:29:47,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:29:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:48,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:29:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:48,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:29:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:48,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 05:29:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:48,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 05:29:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:48,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-11-07 05:29:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:29:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 150 proven. 32 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-11-07 05:29:48,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442370871] [2020-11-07 05:29:48,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:29:48,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:29:48,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382681314] [2020-11-07 05:29:48,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:29:48,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:29:48,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:29:48,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:29:48,357 INFO L87 Difference]: Start difference. First operand 5768 states and 6128 transitions. Second operand 7 states. [2020-11-07 05:29:48,551 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:29:49,858 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:29:51,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:29:51,926 INFO L93 Difference]: Finished difference Result 11214 states and 11927 transitions. [2020-11-07 05:29:51,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 05:29:51,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 321 [2020-11-07 05:29:51,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:29:51,932 INFO L225 Difference]: With dead ends: 11214 [2020-11-07 05:29:51,932 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 05:29:51,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:29:51,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 05:29:51,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 05:29:51,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 05:29:51,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 05:29:51,945 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 321 [2020-11-07 05:29:51,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:29:51,945 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 05:29:51,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:29:51,945 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 05:29:51,945 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 05:29:51,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 05:29:51,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 05:29:52,743 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:30:04,095 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 120 [2020-11-07 05:32:09,447 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 144 [2020-11-07 05:33:02,438 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 117 [2020-11-07 05:33:02,557 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 117 [2020-11-07 05:33:02,703 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 123 [2020-11-07 05:33:02,847 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 117 [2020-11-07 05:33:02,988 WARN L194 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 118 [2020-11-07 05:33:03,096 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 118 [2020-11-07 05:33:04,995 WARN L194 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-11-07 05:33:08,445 WARN L194 SmtUtils]: Spent 3.43 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:33:11,927 WARN L194 SmtUtils]: Spent 3.47 s on a formula simplification. DAG size of input: 292 DAG size of output: 91 [2020-11-07 05:33:15,393 WARN L194 SmtUtils]: Spent 3.45 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:33:16,671 WARN L194 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2020-11-07 05:33:18,227 WARN L194 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-11-07 05:33:19,782 WARN L194 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-11-07 05:33:23,256 WARN L194 SmtUtils]: Spent 3.46 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:33:24,565 WARN L194 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-11-07 05:33:27,989 WARN L194 SmtUtils]: Spent 3.41 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:33:29,512 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 218 DAG size of output: 75 [2020-11-07 05:33:31,086 WARN L194 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 215 DAG size of output: 76 [2020-11-07 05:33:32,298 WARN L194 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 213 DAG size of output: 73 [2020-11-07 05:33:33,719 WARN L194 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 172 DAG size of output: 77 [2020-11-07 05:33:34,925 WARN L194 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 161 DAG size of output: 69 [2020-11-07 05:33:37,126 WARN L194 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 221 DAG size of output: 78 [2020-11-07 05:33:40,781 WARN L194 SmtUtils]: Spent 3.64 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:33:42,784 WARN L194 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 233 DAG size of output: 82 [2020-11-07 05:33:44,565 WARN L194 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 217 DAG size of output: 78 [2020-11-07 05:33:48,239 WARN L194 SmtUtils]: Spent 3.66 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:33:51,896 WARN L194 SmtUtils]: Spent 3.65 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:33:53,127 WARN L194 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2020-11-07 05:33:54,452 WARN L194 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 213 DAG size of output: 73 [2020-11-07 05:33:55,868 WARN L194 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 170 DAG size of output: 76 [2020-11-07 05:33:57,244 WARN L194 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 215 DAG size of output: 73 [2020-11-07 05:33:58,462 WARN L194 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 163 DAG size of output: 69 [2020-11-07 05:34:02,155 WARN L194 SmtUtils]: Spent 3.68 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:34:03,523 WARN L194 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-11-07 05:34:04,863 WARN L194 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 168 DAG size of output: 75 [2020-11-07 05:34:06,418 WARN L194 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 215 DAG size of output: 74 [2020-11-07 05:34:07,665 WARN L194 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2020-11-07 05:34:09,160 WARN L194 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 176 DAG size of output: 75 [2020-11-07 05:34:12,879 WARN L194 SmtUtils]: Spent 3.71 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:34:14,460 WARN L194 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 215 DAG size of output: 76 [2020-11-07 05:34:18,223 WARN L194 SmtUtils]: Spent 3.75 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:34:19,534 WARN L194 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 213 DAG size of output: 73 [2020-11-07 05:34:20,997 WARN L194 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 171 DAG size of output: 75 [2020-11-07 05:34:22,411 WARN L194 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 169 DAG size of output: 73 [2020-11-07 05:34:26,109 WARN L194 SmtUtils]: Spent 3.69 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:34:27,502 WARN L194 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 167 DAG size of output: 74 [2020-11-07 05:34:28,718 WARN L194 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2020-11-07 05:34:29,954 WARN L194 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2020-11-07 05:34:31,417 WARN L194 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 171 DAG size of output: 73 [2020-11-07 05:34:33,857 WARN L194 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 185 DAG size of output: 89 [2020-11-07 05:34:35,230 WARN L194 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 171 DAG size of output: 70 [2020-11-07 05:34:36,608 WARN L194 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 166 DAG size of output: 71 [2020-11-07 05:34:40,321 WARN L194 SmtUtils]: Spent 3.70 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:34:41,759 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 166 DAG size of output: 72 [2020-11-07 05:34:43,414 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 217 DAG size of output: 76 [2020-11-07 05:34:44,893 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 175 DAG size of output: 72 [2020-11-07 05:34:46,271 WARN L194 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 167 DAG size of output: 76 [2020-11-07 05:34:47,365 WARN L194 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 164 DAG size of output: 73 [2020-11-07 05:34:49,186 WARN L194 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 215 DAG size of output: 77 [2020-11-07 05:34:50,418 WARN L194 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 161 DAG size of output: 67 [2020-11-07 05:34:51,941 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 218 DAG size of output: 75 [2020-11-07 05:34:53,329 WARN L194 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 175 DAG size of output: 76 [2020-11-07 05:34:54,798 WARN L194 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 171 DAG size of output: 74 [2020-11-07 05:34:58,512 WARN L194 SmtUtils]: Spent 3.70 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:34:59,904 WARN L194 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 169 DAG size of output: 75 [2020-11-07 05:35:00,575 WARN L194 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 64 [2020-11-07 05:35:02,193 WARN L194 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-11-07 05:35:03,443 WARN L194 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 165 DAG size of output: 71 [2020-11-07 05:35:04,672 WARN L194 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 163 DAG size of output: 69 [2020-11-07 05:35:08,423 WARN L194 SmtUtils]: Spent 3.74 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:35:09,781 WARN L194 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-11-07 05:35:13,352 WARN L194 SmtUtils]: Spent 3.56 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:35:16,929 WARN L194 SmtUtils]: Spent 3.57 s on a formula simplification. DAG size of input: 292 DAG size of output: 91 [2020-11-07 05:35:20,458 WARN L194 SmtUtils]: Spent 3.52 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:35:22,096 WARN L194 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-11-07 05:35:23,422 WARN L194 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2020-11-07 05:35:25,003 WARN L194 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-11-07 05:35:28,386 WARN L194 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:35:31,983 WARN L194 SmtUtils]: Spent 3.59 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:35:33,160 WARN L194 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 163 DAG size of output: 69 [2020-11-07 05:35:35,545 WARN L194 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 183 DAG size of output: 85 [2020-11-07 05:35:39,147 WARN L194 SmtUtils]: Spent 3.59 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:35:40,569 WARN L194 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 162 DAG size of output: 72 [2020-11-07 05:35:42,172 WARN L194 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 224 DAG size of output: 76 [2020-11-07 05:35:43,587 WARN L194 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 172 DAG size of output: 78 [2020-11-07 05:35:44,875 WARN L194 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 171 DAG size of output: 77 [2020-11-07 05:35:46,987 WARN L194 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 220 DAG size of output: 78 [2020-11-07 05:35:48,714 WARN L194 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 215 DAG size of output: 77 [2020-11-07 05:35:50,929 WARN L194 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 244 DAG size of output: 80 [2020-11-07 05:35:52,147 WARN L194 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2020-11-07 05:35:53,778 WARN L194 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 223 DAG size of output: 77 [2020-11-07 05:35:55,025 WARN L194 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 166 DAG size of output: 73 [2020-11-07 05:35:58,651 WARN L194 SmtUtils]: Spent 3.62 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:36:00,176 WARN L194 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 167 DAG size of output: 79 [2020-11-07 05:36:01,394 WARN L194 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 166 DAG size of output: 73 [2020-11-07 05:36:02,607 WARN L194 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2020-11-07 05:36:04,121 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 167 DAG size of output: 77 [2020-11-07 05:36:05,543 WARN L194 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 176 DAG size of output: 74 [2020-11-07 05:36:06,858 WARN L194 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-11-07 05:36:08,049 WARN L194 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 162 DAG size of output: 69 [2020-11-07 05:36:11,529 WARN L194 SmtUtils]: Spent 3.47 s on a formula simplification. DAG size of input: 292 DAG size of output: 91 [2020-11-07 05:36:15,181 WARN L194 SmtUtils]: Spent 3.64 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:36:16,756 WARN L194 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-11-07 05:36:20,186 WARN L194 SmtUtils]: Spent 3.42 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:36:23,667 WARN L194 SmtUtils]: Spent 3.47 s on a formula simplification. DAG size of input: 292 DAG size of output: 91 [2020-11-07 05:36:27,118 WARN L194 SmtUtils]: Spent 3.44 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:36:28,386 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2020-11-07 05:36:29,890 WARN L194 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 169 DAG size of output: 74 [2020-11-07 05:36:32,086 WARN L194 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 179 DAG size of output: 78 [2020-11-07 05:36:35,758 WARN L194 SmtUtils]: Spent 3.66 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:36:37,250 WARN L194 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 170 DAG size of output: 75 [2020-11-07 05:36:38,481 WARN L194 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 166 DAG size of output: 72 [2020-11-07 05:36:39,941 WARN L194 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 172 DAG size of output: 77 [2020-11-07 05:36:42,467 WARN L194 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 243 DAG size of output: 82 [2020-11-07 05:36:44,379 WARN L194 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 220 DAG size of output: 77 [2020-11-07 05:36:45,814 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 166 DAG size of output: 72 [2020-11-07 05:36:47,806 WARN L194 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 207 DAG size of output: 79 [2020-11-07 05:36:49,116 WARN L194 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 169 DAG size of output: 74 [2020-11-07 05:36:50,205 WARN L194 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 164 DAG size of output: 73 [2020-11-07 05:36:51,644 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 166 DAG size of output: 75 [2020-11-07 05:36:55,354 WARN L194 SmtUtils]: Spent 3.70 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:36:56,910 WARN L194 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 218 DAG size of output: 75 [2020-11-07 05:37:00,627 WARN L194 SmtUtils]: Spent 3.71 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:37:02,678 WARN L194 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 171 DAG size of output: 77 [2020-11-07 05:37:04,015 WARN L194 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-11-07 05:37:05,621 WARN L194 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-11-07 05:37:09,130 WARN L194 SmtUtils]: Spent 3.50 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:37:10,861 WARN L194 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 219 DAG size of output: 76 [2020-11-07 05:37:13,020 WARN L194 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 172 DAG size of output: 79 [2020-11-07 05:37:16,741 WARN L194 SmtUtils]: Spent 3.71 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:37:18,306 WARN L194 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 173 DAG size of output: 76 [2020-11-07 05:37:19,593 WARN L194 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 166 DAG size of output: 73 [2020-11-07 05:37:20,890 WARN L194 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 164 DAG size of output: 73 [2020-11-07 05:37:22,415 WARN L194 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 167 DAG size of output: 75 [2020-11-07 05:37:23,696 WARN L194 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 164 DAG size of output: 71 [2020-11-07 05:37:25,116 WARN L194 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 165 DAG size of output: 77 [2020-11-07 05:37:28,851 WARN L194 SmtUtils]: Spent 3.72 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:37:30,222 WARN L194 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 213 DAG size of output: 75 [2020-11-07 05:37:31,685 WARN L194 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 168 DAG size of output: 73 [2020-11-07 05:37:33,728 WARN L194 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 172 DAG size of output: 78 [2020-11-07 05:37:34,972 WARN L194 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 162 DAG size of output: 69 [2020-11-07 05:37:36,378 WARN L194 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 166 DAG size of output: 70 [2020-11-07 05:37:37,766 WARN L194 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 213 DAG size of output: 74 [2020-11-07 05:37:39,392 WARN L194 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 170 DAG size of output: 75 [2020-11-07 05:37:40,660 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 164 DAG size of output: 71 [2020-11-07 05:37:42,117 WARN L194 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 174 DAG size of output: 72 [2020-11-07 05:37:43,787 WARN L194 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 197 DAG size of output: 85 [2020-11-07 05:37:45,667 WARN L194 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 239 DAG size of output: 84 [2020-11-07 05:37:47,028 WARN L194 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 168 DAG size of output: 74 [2020-11-07 05:37:48,467 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 174 DAG size of output: 73 [2020-11-07 05:37:49,908 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 168 DAG size of output: 73 [2020-11-07 05:37:52,256 WARN L194 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 200 DAG size of output: 81 [2020-11-07 05:37:53,521 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 166 DAG size of output: 73 [2020-11-07 05:37:54,887 WARN L194 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-11-07 05:37:55,548 WARN L194 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 64 [2020-11-07 05:37:59,080 WARN L194 SmtUtils]: Spent 3.51 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:38:02,601 WARN L194 SmtUtils]: Spent 3.51 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:38:03,260 WARN L194 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 64 [2020-11-07 05:38:03,920 WARN L194 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 64 [2020-11-07 05:38:05,230 WARN L194 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2020-11-07 05:38:06,762 WARN L194 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 173 DAG size of output: 75 [2020-11-07 05:38:10,525 WARN L194 SmtUtils]: Spent 3.75 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:38:11,832 WARN L194 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 166 DAG size of output: 73 [2020-11-07 05:38:13,277 WARN L194 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 167 DAG size of output: 74 [2020-11-07 05:38:14,743 WARN L194 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 172 DAG size of output: 73 [2020-11-07 05:38:18,323 WARN L194 SmtUtils]: Spent 3.57 s on a formula simplification. DAG size of input: 292 DAG size of output: 91 [2020-11-07 05:38:22,088 WARN L194 SmtUtils]: Spent 3.75 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:38:23,695 WARN L194 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 217 DAG size of output: 74 [2020-11-07 05:38:25,050 WARN L194 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 169 DAG size of output: 74 [2020-11-07 05:38:28,660 WARN L194 SmtUtils]: Spent 3.60 s on a formula simplification. DAG size of input: 292 DAG size of output: 91 [2020-11-07 05:38:30,046 WARN L194 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-11-07 05:38:31,359 WARN L194 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2020-11-07 05:38:32,673 WARN L194 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2020-11-07 05:38:36,239 WARN L194 SmtUtils]: Spent 3.56 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:38:37,627 WARN L194 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-11-07 05:38:39,281 WARN L194 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-11-07 05:38:42,835 WARN L194 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:38:44,484 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-11-07 05:38:48,074 WARN L194 SmtUtils]: Spent 3.58 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:38:49,742 WARN L194 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-11-07 05:38:51,034 WARN L194 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:38:52,348 WARN L194 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 164 DAG size of output: 71 [2020-11-07 05:38:53,630 WARN L194 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 161 DAG size of output: 69 [2020-11-07 05:38:57,437 WARN L194 SmtUtils]: Spent 3.79 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:38:59,052 WARN L194 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 217 DAG size of output: 74 [2020-11-07 05:39:02,884 WARN L194 SmtUtils]: Spent 3.82 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:39:04,305 WARN L194 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 167 DAG size of output: 74 [2020-11-07 05:39:05,815 WARN L194 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 171 DAG size of output: 77 [2020-11-07 05:39:07,144 WARN L194 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2020-11-07 05:39:10,765 WARN L194 SmtUtils]: Spent 3.61 s on a formula simplification. DAG size of input: 292 DAG size of output: 91 [2020-11-07 05:39:14,608 WARN L194 SmtUtils]: Spent 3.83 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:39:15,912 WARN L194 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 162 DAG size of output: 71 [2020-11-07 05:39:17,450 WARN L194 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 172 DAG size of output: 75 [2020-11-07 05:39:21,069 WARN L194 SmtUtils]: Spent 3.61 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:39:22,744 WARN L194 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-11-07 05:39:23,483 WARN L194 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 64 [2020-11-07 05:39:24,972 WARN L194 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 166 DAG size of output: 73 [2020-11-07 05:39:26,571 WARN L194 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 215 DAG size of output: 74 [2020-11-07 05:39:27,918 WARN L194 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 168 DAG size of output: 74 [2020-11-07 05:39:29,416 WARN L194 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 168 DAG size of output: 72 [2020-11-07 05:39:33,253 WARN L194 SmtUtils]: Spent 3.83 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:39:37,109 WARN L194 SmtUtils]: Spent 3.85 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:39:38,688 WARN L194 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 172 DAG size of output: 76 [2020-11-07 05:39:40,155 WARN L194 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 172 DAG size of output: 74 [2020-11-07 05:39:41,480 WARN L194 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 162 DAG size of output: 71 [2020-11-07 05:39:42,843 WARN L194 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 167 DAG size of output: 75 [2020-11-07 05:39:44,162 WARN L194 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 161 DAG size of output: 69 [2020-11-07 05:39:45,490 WARN L194 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 164 DAG size of output: 71 [2020-11-07 05:39:47,136 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 217 DAG size of output: 74 [2020-11-07 05:39:48,532 WARN L194 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 164 DAG size of output: 68 [2020-11-07 05:39:50,050 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 166 DAG size of output: 75 [2020-11-07 05:39:51,519 WARN L194 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 165 DAG size of output: 77 [2020-11-07 05:39:52,854 WARN L194 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 161 DAG size of output: 69 [2020-11-07 05:39:54,402 WARN L194 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 176 DAG size of output: 75 [2020-11-07 05:39:58,295 WARN L194 SmtUtils]: Spent 3.88 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:40:00,067 WARN L194 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 192 DAG size of output: 86 [2020-11-07 05:40:02,458 WARN L194 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 180 DAG size of output: 79 [2020-11-07 05:40:03,905 WARN L194 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 167 DAG size of output: 76 [2020-11-07 05:40:05,456 WARN L194 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 171 DAG size of output: 72 [2020-11-07 05:40:09,369 WARN L194 SmtUtils]: Spent 3.90 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:40:11,266 WARN L194 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 167 DAG size of output: 76 [2020-11-07 05:40:15,154 WARN L194 SmtUtils]: Spent 3.88 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:40:16,694 WARN L194 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 174 DAG size of output: 76 [2020-11-07 05:40:18,553 WARN L194 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 169 DAG size of output: 74 [2020-11-07 05:40:20,085 WARN L194 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 169 DAG size of output: 73 [2020-11-07 05:40:23,993 WARN L194 SmtUtils]: Spent 3.90 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:40:25,419 WARN L194 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 164 DAG size of output: 69 [2020-11-07 05:40:28,408 WARN L194 SmtUtils]: Spent 2.98 s on a formula simplification. DAG size of input: 278 DAG size of output: 84 [2020-11-07 05:40:29,764 WARN L194 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2020-11-07 05:40:31,297 WARN L194 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 171 DAG size of output: 74 [2020-11-07 05:40:33,176 WARN L194 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 226 DAG size of output: 75 [2020-11-07 05:40:34,543 WARN L194 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 169 DAG size of output: 74 [2020-11-07 05:40:38,437 WARN L194 SmtUtils]: Spent 3.88 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:40:39,782 WARN L194 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 161 DAG size of output: 69 [2020-11-07 05:40:43,706 WARN L194 SmtUtils]: Spent 3.91 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-11-07 05:40:45,318 WARN L194 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 175 DAG size of output: 75 [2020-11-07 05:40:46,752 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 167 DAG size of output: 76 [2020-11-07 05:40:48,554 WARN L194 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 223 DAG size of output: 77 [2020-11-07 05:40:49,924 WARN L194 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2020-11-07 05:40:53,640 WARN L194 SmtUtils]: Spent 3.71 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:40:55,018 WARN L194 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2020-11-07 05:40:56,461 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-11-07 05:40:57,891 WARN L194 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-11-07 05:41:01,603 WARN L194 SmtUtils]: Spent 3.70 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:41:03,052 WARN L194 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-11-07 05:41:06,738 WARN L194 SmtUtils]: Spent 3.68 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-11-07 05:41:10,686 WARN L194 SmtUtils]: Spent 3.94 s on a formula simplification. DAG size of input: 293 DAG size of output: 93