/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/Problem10_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:19:15,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:19:15,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:19:15,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 06:19:15,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 06:19:15,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 06:19:15,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 06:19:15,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 06:19:15,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 06:19:15,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 06:19:15,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 06:19:15,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 06:19:15,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:19:15,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:19:15,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:19:15,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:19:15,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:19:15,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:19:15,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:19:15,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:19:15,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:19:15,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:19:15,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:19:15,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:19:15,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:19:15,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:19:15,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:19:15,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:19:15,853 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 06:19:15,864 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:19:15,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:19:15,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:19:15,866 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:19:15,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:19:15,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:19:15,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:19:15,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:19:15,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:19:15,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:19:15,868 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:19:15,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:19:15,868 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:19:15,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:19:15,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:19:15,869 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:19:15,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:19:15,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:19:15,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:19:15,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:19:15,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:19:15,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:19:15,870 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:19:16,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:19:16,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:19:16,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:19:16,287 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:19:16,287 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:19:16,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-11-07 06:19:16,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f151e020/8966a3f22f6e4534afcffa03f51e4593/FLAGb1c6ca7a9 [2020-11-07 06:19:17,028 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:19:17,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-11-07 06:19:17,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f151e020/8966a3f22f6e4534afcffa03f51e4593/FLAGb1c6ca7a9 [2020-11-07 06:19:17,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f151e020/8966a3f22f6e4534afcffa03f51e4593 [2020-11-07 06:19:17,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:19:17,303 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:19:17,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:19:17,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:19:17,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:19:17,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:19:17" (1/1) ... [2020-11-07 06:19:17,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e59fcaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:19:17, skipping insertion in model container [2020-11-07 06:19:17,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:19:17" (1/1) ... [2020-11-07 06:19:17,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:19:17,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:19:17,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:19:17,863 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:19:18,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:19:18,098 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:19:18,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:19:18 WrapperNode [2020-11-07 06:19:18,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:19:18,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:19:18,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:19:18,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:19:18,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:19:18" (1/1) ... [2020-11-07 06:19:18,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:19:18" (1/1) ... [2020-11-07 06:19:18,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:19:18" (1/1) ... [2020-11-07 06:19:18,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:19:18" (1/1) ... [2020-11-07 06:19:18,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:19:18" (1/1) ... [2020-11-07 06:19:18,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:19:18" (1/1) ... [2020-11-07 06:19:18,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:19:18" (1/1) ... [2020-11-07 06:19:18,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:19:18,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:19:18,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:19:18,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:19:18,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:19:18" (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 06:19:18,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:19:18,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:19:18,359 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:19:18,359 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-11-07 06:19:18,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:19:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-11-07 06:19:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:19:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:19:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:19:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:19:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 06:19:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 06:19:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:19:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:19:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:19:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:19:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:19:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:19:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:19:20,120 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:19:20,120 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 06:19:20,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:19:20 BoogieIcfgContainer [2020-11-07 06:19:20,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:19:20,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:19:20,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:19:20,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:19:20,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:19:17" (1/3) ... [2020-11-07 06:19:20,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dff11f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:19:20, skipping insertion in model container [2020-11-07 06:19:20,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:19:18" (2/3) ... [2020-11-07 06:19:20,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dff11f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:19:20, skipping insertion in model container [2020-11-07 06:19:20,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:19:20" (3/3) ... [2020-11-07 06:19:20,133 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label39.c [2020-11-07 06:19:20,149 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:19:20,153 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:19:20,174 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:19:20,198 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:19:20,199 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:19:20,199 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:19:20,199 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:19:20,199 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:19:20,199 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:19:20,199 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:19:20,200 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:19:20,225 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states. [2020-11-07 06:19:20,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-07 06:19:20,237 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:19:20,238 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] [2020-11-07 06:19:20,238 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:19:20,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:19:20,244 INFO L82 PathProgramCache]: Analyzing trace with hash -68466208, now seen corresponding path program 1 times [2020-11-07 06:19:20,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:19:20,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494399127] [2020-11-07 06:19:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:19:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:20,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:19:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:20,806 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 06:19:20,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494399127] [2020-11-07 06:19:20,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:19:20,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 06:19:20,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942265890] [2020-11-07 06:19:20,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 06:19:20,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:19:20,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 06:19:20,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 06:19:20,836 INFO L87 Difference]: Start difference. First operand 468 states. Second operand 5 states. [2020-11-07 06:19:24,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:19:24,173 INFO L93 Difference]: Finished difference Result 1239 states and 1811 transitions. [2020-11-07 06:19:24,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 06:19:24,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-11-07 06:19:24,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:19:24,207 INFO L225 Difference]: With dead ends: 1239 [2020-11-07 06:19:24,207 INFO L226 Difference]: Without dead ends: 716 [2020-11-07 06:19:24,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-07 06:19:24,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-11-07 06:19:24,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 704. [2020-11-07 06:19:24,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-11-07 06:19:24,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 935 transitions. [2020-11-07 06:19:24,452 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 935 transitions. Word has length 54 [2020-11-07 06:19:24,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:19:24,453 INFO L481 AbstractCegarLoop]: Abstraction has 704 states and 935 transitions. [2020-11-07 06:19:24,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 06:19:24,453 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 935 transitions. [2020-11-07 06:19:24,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-11-07 06:19:24,461 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:19:24,462 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, 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] [2020-11-07 06:19:24,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:19:24,463 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:19:24,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:19:24,464 INFO L82 PathProgramCache]: Analyzing trace with hash 397085007, now seen corresponding path program 1 times [2020-11-07 06:19:24,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:19:24,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533552854] [2020-11-07 06:19:24,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:19:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:24,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:19:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:24,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:19:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:19:24,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533552854] [2020-11-07 06:19:24,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:19:24,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 06:19:24,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804795600] [2020-11-07 06:19:24,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 06:19:24,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:19:25,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 06:19:25,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 06:19:25,004 INFO L87 Difference]: Start difference. First operand 704 states and 935 transitions. Second operand 8 states. [2020-11-07 06:19:27,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:19:27,952 INFO L93 Difference]: Finished difference Result 1569 states and 2140 transitions. [2020-11-07 06:19:27,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 06:19:27,953 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-11-07 06:19:27,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:19:27,966 INFO L225 Difference]: With dead ends: 1569 [2020-11-07 06:19:27,966 INFO L226 Difference]: Without dead ends: 888 [2020-11-07 06:19:27,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-11-07 06:19:27,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2020-11-07 06:19:28,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 862. [2020-11-07 06:19:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 862 states. [2020-11-07 06:19:28,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1099 transitions. [2020-11-07 06:19:28,125 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1099 transitions. Word has length 137 [2020-11-07 06:19:28,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:19:28,126 INFO L481 AbstractCegarLoop]: Abstraction has 862 states and 1099 transitions. [2020-11-07 06:19:28,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 06:19:28,126 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1099 transitions. [2020-11-07 06:19:28,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-11-07 06:19:28,155 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:19:28,156 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, 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] [2020-11-07 06:19:28,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:19:28,156 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:19:28,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:19:28,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1553344420, now seen corresponding path program 1 times [2020-11-07 06:19:28,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:19:28,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670801239] [2020-11-07 06:19:28,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:19:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:28,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:19:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:28,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:19:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:19:28,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670801239] [2020-11-07 06:19:28,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:19:28,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-07 06:19:28,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483411561] [2020-11-07 06:19:28,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 06:19:28,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:19:28,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 06:19:28,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 06:19:28,449 INFO L87 Difference]: Start difference. First operand 862 states and 1099 transitions. Second operand 5 states. [2020-11-07 06:19:30,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:19:30,993 INFO L93 Difference]: Finished difference Result 2359 states and 3137 transitions. [2020-11-07 06:19:30,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 06:19:30,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-11-07 06:19:30,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:19:31,013 INFO L225 Difference]: With dead ends: 2359 [2020-11-07 06:19:31,013 INFO L226 Difference]: Without dead ends: 1520 [2020-11-07 06:19:31,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-07 06:19:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2020-11-07 06:19:31,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1326. [2020-11-07 06:19:31,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1326 states. [2020-11-07 06:19:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1664 transitions. [2020-11-07 06:19:31,320 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1664 transitions. Word has length 143 [2020-11-07 06:19:31,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:19:31,321 INFO L481 AbstractCegarLoop]: Abstraction has 1326 states and 1664 transitions. [2020-11-07 06:19:31,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 06:19:31,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1664 transitions. [2020-11-07 06:19:31,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-11-07 06:19:31,326 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:19:31,327 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, 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 06:19:31,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:19:31,327 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:19:31,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:19:31,328 INFO L82 PathProgramCache]: Analyzing trace with hash 817772306, now seen corresponding path program 1 times [2020-11-07 06:19:31,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:19:31,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935635406] [2020-11-07 06:19:31,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:19:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:31,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:19:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:31,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:19:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:19:31,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935635406] [2020-11-07 06:19:31,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:19:31,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 06:19:31,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685766357] [2020-11-07 06:19:31,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 06:19:31,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:19:31,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 06:19:31,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 06:19:31,683 INFO L87 Difference]: Start difference. First operand 1326 states and 1664 transitions. Second operand 7 states. [2020-11-07 06:19:34,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:19:34,640 INFO L93 Difference]: Finished difference Result 3161 states and 4104 transitions. [2020-11-07 06:19:34,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 06:19:34,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-11-07 06:19:34,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:19:34,662 INFO L225 Difference]: With dead ends: 3161 [2020-11-07 06:19:34,662 INFO L226 Difference]: Without dead ends: 1858 [2020-11-07 06:19:34,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-11-07 06:19:34,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2020-11-07 06:19:34,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1496. [2020-11-07 06:19:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1496 states. [2020-11-07 06:19:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1750 transitions. [2020-11-07 06:19:34,956 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1750 transitions. Word has length 152 [2020-11-07 06:19:34,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:19:34,957 INFO L481 AbstractCegarLoop]: Abstraction has 1496 states and 1750 transitions. [2020-11-07 06:19:34,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 06:19:34,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1750 transitions. [2020-11-07 06:19:34,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-07 06:19:34,960 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:19:34,960 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, 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 06:19:34,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 06:19:34,961 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:19:34,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:19:34,962 INFO L82 PathProgramCache]: Analyzing trace with hash -866404089, now seen corresponding path program 1 times [2020-11-07 06:19:34,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:19:34,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162420971] [2020-11-07 06:19:34,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:19:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:35,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:19:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:35,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:19:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:35,616 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:19:35,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162420971] [2020-11-07 06:19:35,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:19:35,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 06:19:35,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939813194] [2020-11-07 06:19:35,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 06:19:35,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:19:35,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 06:19:35,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-07 06:19:35,619 INFO L87 Difference]: Start difference. First operand 1496 states and 1750 transitions. Second operand 12 states. [2020-11-07 06:19:36,266 WARN L194 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2020-11-07 06:19:36,486 WARN L194 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-11-07 06:19:36,947 WARN L194 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-11-07 06:19:37,855 WARN L194 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-11-07 06:19:38,116 WARN L194 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-11-07 06:19:38,323 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2020-11-07 06:19:38,782 WARN L194 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-11-07 06:19:38,985 WARN L194 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2020-11-07 06:19:41,190 WARN L194 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-11-07 06:19:41,448 WARN L194 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-11-07 06:19:43,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:19:43,344 INFO L93 Difference]: Finished difference Result 4697 states and 5605 transitions. [2020-11-07 06:19:43,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-07 06:19:43,346 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 181 [2020-11-07 06:19:43,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:19:43,373 INFO L225 Difference]: With dead ends: 4697 [2020-11-07 06:19:43,373 INFO L226 Difference]: Without dead ends: 3224 [2020-11-07 06:19:43,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=265, Invalid=857, Unknown=0, NotChecked=0, Total=1122 [2020-11-07 06:19:43,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2020-11-07 06:19:43,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 2473. [2020-11-07 06:19:43,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2473 states. [2020-11-07 06:19:43,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 2924 transitions. [2020-11-07 06:19:43,885 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 2924 transitions. Word has length 181 [2020-11-07 06:19:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:19:43,886 INFO L481 AbstractCegarLoop]: Abstraction has 2473 states and 2924 transitions. [2020-11-07 06:19:43,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 06:19:43,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 2924 transitions. [2020-11-07 06:19:43,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-07 06:19:43,892 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:19:43,893 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-11-07 06:19:43,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 06:19:43,893 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:19:43,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:19:43,894 INFO L82 PathProgramCache]: Analyzing trace with hash 352163714, now seen corresponding path program 1 times [2020-11-07 06:19:43,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:19:43,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401258294] [2020-11-07 06:19:43,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:19:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:44,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:19:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:44,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:19:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:44,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-11-07 06:19:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-11-07 06:19:44,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401258294] [2020-11-07 06:19:44,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:19:44,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-07 06:19:44,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546960831] [2020-11-07 06:19:44,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 06:19:44,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:19:44,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 06:19:44,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 06:19:44,241 INFO L87 Difference]: Start difference. First operand 2473 states and 2924 transitions. Second operand 5 states. [2020-11-07 06:19:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:19:47,270 INFO L93 Difference]: Finished difference Result 5925 states and 7106 transitions. [2020-11-07 06:19:47,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 06:19:47,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 255 [2020-11-07 06:19:47,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:19:47,297 INFO L225 Difference]: With dead ends: 5925 [2020-11-07 06:19:47,298 INFO L226 Difference]: Without dead ends: 3475 [2020-11-07 06:19:47,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-07 06:19:47,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2020-11-07 06:19:47,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3126. [2020-11-07 06:19:47,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3126 states. [2020-11-07 06:19:47,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 3741 transitions. [2020-11-07 06:19:47,968 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 3741 transitions. Word has length 255 [2020-11-07 06:19:47,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:19:47,968 INFO L481 AbstractCegarLoop]: Abstraction has 3126 states and 3741 transitions. [2020-11-07 06:19:47,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 06:19:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 3741 transitions. [2020-11-07 06:19:47,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-11-07 06:19:47,979 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:19:47,980 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-11-07 06:19:47,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 06:19:47,980 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:19:47,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:19:47,981 INFO L82 PathProgramCache]: Analyzing trace with hash 31932449, now seen corresponding path program 1 times [2020-11-07 06:19:47,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:19:47,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814604294] [2020-11-07 06:19:47,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:19:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:48,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:19:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:48,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:19:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:48,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-11-07 06:19:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-07 06:19:48,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814604294] [2020-11-07 06:19:48,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:19:48,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 06:19:48,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740676243] [2020-11-07 06:19:48,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 06:19:48,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:19:48,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 06:19:48,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-07 06:19:48,727 INFO L87 Difference]: Start difference. First operand 3126 states and 3741 transitions. Second operand 11 states. [2020-11-07 06:19:49,412 WARN L194 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2020-11-07 06:19:49,876 WARN L194 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-11-07 06:19:50,908 WARN L194 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-11-07 06:19:52,324 WARN L194 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-11-07 06:19:52,923 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2020-11-07 06:19:54,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:19:54,749 INFO L93 Difference]: Finished difference Result 7935 states and 9721 transitions. [2020-11-07 06:19:54,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-07 06:19:54,749 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 260 [2020-11-07 06:19:54,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:19:54,786 INFO L225 Difference]: With dead ends: 7935 [2020-11-07 06:19:54,786 INFO L226 Difference]: Without dead ends: 4832 [2020-11-07 06:19:54,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2020-11-07 06:19:54,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2020-11-07 06:19:55,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 3594. [2020-11-07 06:19:55,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3594 states. [2020-11-07 06:19:55,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 4258 transitions. [2020-11-07 06:19:55,731 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 4258 transitions. Word has length 260 [2020-11-07 06:19:55,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:19:55,732 INFO L481 AbstractCegarLoop]: Abstraction has 3594 states and 4258 transitions. [2020-11-07 06:19:55,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 06:19:55,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 4258 transitions. [2020-11-07 06:19:55,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-11-07 06:19:55,739 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:19:55,739 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-11-07 06:19:55,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 06:19:55,740 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:19:55,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:19:55,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2036617923, now seen corresponding path program 1 times [2020-11-07 06:19:55,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:19:55,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736849282] [2020-11-07 06:19:55,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:19:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:55,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:19:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:55,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:19:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:55,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-11-07 06:19:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:19:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-07 06:19:56,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736849282] [2020-11-07 06:19:56,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:19:56,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 06:19:56,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377710376] [2020-11-07 06:19:56,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 06:19:56,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:19:56,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 06:19:56,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-11-07 06:19:56,136 INFO L87 Difference]: Start difference. First operand 3594 states and 4258 transitions. Second operand 10 states. [2020-11-07 06:20:02,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:20:02,073 INFO L93 Difference]: Finished difference Result 8555 states and 10241 transitions. [2020-11-07 06:20:02,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-07 06:20:02,074 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 270 [2020-11-07 06:20:02,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:20:02,103 INFO L225 Difference]: With dead ends: 8555 [2020-11-07 06:20:02,103 INFO L226 Difference]: Without dead ends: 4672 [2020-11-07 06:20:02,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2020-11-07 06:20:02,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4672 states. [2020-11-07 06:20:02,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4672 to 3584. [2020-11-07 06:20:02,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3584 states. [2020-11-07 06:20:02,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3584 states to 3584 states and 4227 transitions. [2020-11-07 06:20:02,892 INFO L78 Accepts]: Start accepts. Automaton has 3584 states and 4227 transitions. Word has length 270 [2020-11-07 06:20:02,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:20:02,893 INFO L481 AbstractCegarLoop]: Abstraction has 3584 states and 4227 transitions. [2020-11-07 06:20:02,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 06:20:02,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3584 states and 4227 transitions. [2020-11-07 06:20:02,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-11-07 06:20:02,900 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:20:02,901 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2020-11-07 06:20:02,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 06:20:02,901 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:20:02,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:20:02,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1068313890, now seen corresponding path program 1 times [2020-11-07 06:20:02,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:20:02,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700687069] [2020-11-07 06:20:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:20:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:03,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:20:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:03,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:20:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:03,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-11-07 06:20:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 84 proven. 94 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-07 06:20:03,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700687069] [2020-11-07 06:20:03,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:20:03,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-11-07 06:20:03,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885327526] [2020-11-07 06:20:03,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 06:20:03,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:20:03,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 06:20:03,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-11-07 06:20:03,853 INFO L87 Difference]: Start difference. First operand 3584 states and 4227 transitions. Second operand 16 states. [2020-11-07 06:20:05,054 WARN L194 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-11-07 06:20:06,448 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-11-07 06:20:07,878 WARN L194 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-11-07 06:20:08,751 WARN L194 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-11-07 06:20:08,938 WARN L194 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-11-07 06:20:09,346 WARN L194 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-11-07 06:20:11,604 WARN L194 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-11-07 06:20:13,851 WARN L194 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2020-11-07 06:20:14,399 WARN L194 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-11-07 06:20:14,832 WARN L194 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-11-07 06:20:16,233 WARN L194 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-11-07 06:20:17,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:20:17,596 INFO L93 Difference]: Finished difference Result 10206 states and 12311 transitions. [2020-11-07 06:20:17,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-07 06:20:17,598 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 305 [2020-11-07 06:20:17,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:20:17,635 INFO L225 Difference]: With dead ends: 10206 [2020-11-07 06:20:17,635 INFO L226 Difference]: Without dead ends: 6645 [2020-11-07 06:20:17,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=660, Invalid=2532, Unknown=0, NotChecked=0, Total=3192 [2020-11-07 06:20:17,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6645 states. [2020-11-07 06:20:18,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6645 to 5175. [2020-11-07 06:20:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5175 states. [2020-11-07 06:20:18,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 6117 transitions. [2020-11-07 06:20:18,877 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 6117 transitions. Word has length 305 [2020-11-07 06:20:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:20:18,878 INFO L481 AbstractCegarLoop]: Abstraction has 5175 states and 6117 transitions. [2020-11-07 06:20:18,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 06:20:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 6117 transitions. [2020-11-07 06:20:18,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-11-07 06:20:18,888 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:20:18,888 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2020-11-07 06:20:18,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 06:20:18,889 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:20:18,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:20:18,889 INFO L82 PathProgramCache]: Analyzing trace with hash -345023563, now seen corresponding path program 1 times [2020-11-07 06:20:18,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:20:18,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429425565] [2020-11-07 06:20:18,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:20:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:19,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:20:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:19,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:20:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:19,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-11-07 06:20:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:19,510 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-11-07 06:20:19,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429425565] [2020-11-07 06:20:19,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:20:19,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-07 06:20:19,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049287133] [2020-11-07 06:20:19,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 06:20:19,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:20:19,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 06:20:19,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-07 06:20:19,513 INFO L87 Difference]: Start difference. First operand 5175 states and 6117 transitions. Second operand 9 states. [2020-11-07 06:20:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:20:26,342 INFO L93 Difference]: Finished difference Result 13587 states and 16747 transitions. [2020-11-07 06:20:26,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 06:20:26,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 329 [2020-11-07 06:20:26,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:20:26,390 INFO L225 Difference]: With dead ends: 13587 [2020-11-07 06:20:26,390 INFO L226 Difference]: Without dead ends: 7941 [2020-11-07 06:20:26,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-11-07 06:20:26,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7941 states. [2020-11-07 06:20:28,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7941 to 6382. [2020-11-07 06:20:28,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6382 states. [2020-11-07 06:20:28,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6382 states to 6382 states and 7556 transitions. [2020-11-07 06:20:28,043 INFO L78 Accepts]: Start accepts. Automaton has 6382 states and 7556 transitions. Word has length 329 [2020-11-07 06:20:28,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:20:28,044 INFO L481 AbstractCegarLoop]: Abstraction has 6382 states and 7556 transitions. [2020-11-07 06:20:28,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 06:20:28,044 INFO L276 IsEmpty]: Start isEmpty. Operand 6382 states and 7556 transitions. [2020-11-07 06:20:28,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-11-07 06:20:28,056 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:20:28,057 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2020-11-07 06:20:28,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 06:20:28,057 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:20:28,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:20:28,058 INFO L82 PathProgramCache]: Analyzing trace with hash -772495789, now seen corresponding path program 1 times [2020-11-07 06:20:28,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:20:28,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536959615] [2020-11-07 06:20:28,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:20:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:28,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:20:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:28,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:20:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:28,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-11-07 06:20:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:28,553 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-11-07 06:20:28,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536959615] [2020-11-07 06:20:28,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:20:28,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-07 06:20:28,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739496564] [2020-11-07 06:20:28,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 06:20:28,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:20:28,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 06:20:28,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-07 06:20:28,556 INFO L87 Difference]: Start difference. First operand 6382 states and 7556 transitions. Second operand 9 states. [2020-11-07 06:20:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:20:35,399 INFO L93 Difference]: Finished difference Result 14632 states and 17704 transitions. [2020-11-07 06:20:35,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 06:20:35,399 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 346 [2020-11-07 06:20:35,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:20:35,414 INFO L225 Difference]: With dead ends: 14632 [2020-11-07 06:20:35,414 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 06:20:35,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-11-07 06:20:35,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 06:20:35,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 06:20:35,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 06:20:35,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 06:20:35,453 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 346 [2020-11-07 06:20:35,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:20:35,453 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 06:20:35,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 06:20:35,454 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 06:20:35,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 06:20:35,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 06:20:35,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 06:20:37,172 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2020-11-07 06:20:37,374 WARN L194 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 132 [2020-11-07 06:20:39,801 WARN L194 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 132 [2020-11-07 06:21:17,715 WARN L194 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 296 [2020-11-07 06:21:33,358 WARN L194 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 296 [2020-11-07 06:21:49,818 WARN L194 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 296 [2020-11-07 06:21:50,195 WARN L194 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 296 [2020-11-07 06:21:50,574 WARN L194 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 296 [2020-11-07 06:22:08,788 WARN L194 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 296 [2020-11-07 06:22:18,965 WARN L194 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 295 [2020-11-07 06:22:20,130 WARN L194 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 295 [2020-11-07 06:22:21,300 WARN L194 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 295 [2020-11-07 06:22:21,791 WARN L194 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 296 [2020-11-07 06:22:48,648 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 183 [2020-11-07 06:22:49,014 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 185 [2020-11-07 06:22:49,289 WARN L194 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 232 [2020-11-07 06:22:49,907 WARN L194 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 231 [2020-11-07 06:22:50,172 WARN L194 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 228 [2020-11-07 06:22:50,343 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 184 [2020-11-07 06:22:50,917 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 190 [2020-11-07 06:22:51,036 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 195 [2020-11-07 06:22:51,151 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 195 [2020-11-07 06:22:52,290 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 186 [2020-11-07 06:22:52,443 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 164 [2020-11-07 06:22:52,712 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 197 [2020-11-07 06:22:53,490 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 183 [2020-11-07 06:22:53,875 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 185 [2020-11-07 06:22:54,150 WARN L194 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 232 [2020-11-07 06:22:54,763 WARN L194 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 231 [2020-11-07 06:22:55,027 WARN L194 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 228 [2020-11-07 06:22:55,197 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 184 [2020-11-07 06:22:55,789 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 190 [2020-11-07 06:22:55,899 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 195 [2020-11-07 06:22:56,017 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 195 [2020-11-07 06:22:57,182 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 186 [2020-11-07 06:22:57,583 WARN L194 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 197 [2020-11-07 06:24:03,900 WARN L194 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 256 DAG size of output: 55 [2020-11-07 06:24:05,333 WARN L194 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 254 DAG size of output: 59 [2020-11-07 06:24:06,776 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 291 DAG size of output: 58 [2020-11-07 06:24:08,543 WARN L194 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 257 DAG size of output: 61 [2020-11-07 06:24:10,146 WARN L194 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 295 DAG size of output: 52 [2020-11-07 06:24:12,135 WARN L194 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 289 DAG size of output: 59 [2020-11-07 06:24:13,499 WARN L194 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 253 DAG size of output: 60 [2020-11-07 06:24:14,965 WARN L194 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 289 DAG size of output: 59 [2020-11-07 06:24:16,747 WARN L194 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 294 DAG size of output: 57 [2020-11-07 06:24:18,429 WARN L194 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 295 DAG size of output: 58 [2020-11-07 06:24:23,027 WARN L194 SmtUtils]: Spent 4.58 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:24:27,485 WARN L194 SmtUtils]: Spent 4.44 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:24:28,905 WARN L194 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 264 DAG size of output: 67 [2020-11-07 06:24:30,789 WARN L194 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 267 DAG size of output: 64 [2020-11-07 06:24:32,458 WARN L194 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 255 DAG size of output: 65 [2020-11-07 06:24:34,047 WARN L194 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 264 DAG size of output: 65 [2020-11-07 06:24:35,576 WARN L194 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 257 DAG size of output: 64 [2020-11-07 06:24:36,745 WARN L194 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 262 DAG size of output: 64 [2020-11-07 06:24:41,245 WARN L194 SmtUtils]: Spent 4.48 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:24:42,977 WARN L194 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 255 DAG size of output: 63 [2020-11-07 06:24:44,348 WARN L194 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 253 DAG size of output: 60 [2020-11-07 06:24:45,619 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 255 DAG size of output: 53 [2020-11-07 06:24:50,189 WARN L194 SmtUtils]: Spent 4.55 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:24:54,743 WARN L194 SmtUtils]: Spent 4.54 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:24:59,284 WARN L194 SmtUtils]: Spent 4.53 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:25:03,722 WARN L194 SmtUtils]: Spent 4.42 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:25:05,600 WARN L194 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 308 DAG size of output: 68 [2020-11-07 06:25:06,743 WARN L194 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 260 DAG size of output: 53 [2020-11-07 06:25:08,153 WARN L194 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 258 DAG size of output: 59 [2020-11-07 06:25:09,644 WARN L194 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 264 DAG size of output: 66 [2020-11-07 06:25:11,327 WARN L194 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 259 DAG size of output: 71 [2020-11-07 06:25:13,087 WARN L194 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 309 DAG size of output: 58 [2020-11-07 06:25:14,367 WARN L194 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 276 DAG size of output: 55 [2020-11-07 06:25:17,491 WARN L194 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:25:20,613 WARN L194 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:25:23,752 WARN L194 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:25:24,875 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:25:25,973 WARN L194 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:25:27,073 WARN L194 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:25:30,194 WARN L194 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:25:31,287 WARN L194 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:25:32,376 WARN L194 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:25:35,424 WARN L194 SmtUtils]: Spent 3.03 s on a formula simplification. DAG size of input: 468 DAG size of output: 54 [2020-11-07 06:25:36,516 WARN L194 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:25:37,607 WARN L194 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 237 DAG size of output: 43 [2020-11-07 06:25:40,742 WARN L194 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:25:41,828 WARN L194 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 237 DAG size of output: 43 [2020-11-07 06:25:44,954 WARN L194 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:25:48,154 WARN L194 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:25:51,316 WARN L194 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:25:52,460 WARN L194 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:25:53,583 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:25:54,695 WARN L194 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:25:57,847 WARN L194 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:26:00,933 WARN L194 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 468 DAG size of output: 54 [2020-11-07 06:26:02,381 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 258 DAG size of output: 59 [2020-11-07 06:26:04,068 WARN L194 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 298 DAG size of output: 59 [2020-11-07 06:26:05,468 WARN L194 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 254 DAG size of output: 59 [2020-11-07 06:26:06,955 WARN L194 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 256 DAG size of output: 63 [2020-11-07 06:26:08,458 WARN L194 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 265 DAG size of output: 61 [2020-11-07 06:26:09,697 WARN L194 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 257 DAG size of output: 61 [2020-11-07 06:26:10,880 WARN L194 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 262 DAG size of output: 53 [2020-11-07 06:26:12,335 WARN L194 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 257 DAG size of output: 63 [2020-11-07 06:26:13,648 WARN L194 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 259 DAG size of output: 57 [2020-11-07 06:26:15,331 WARN L194 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 298 DAG size of output: 59 [2020-11-07 06:26:16,978 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 262 DAG size of output: 63 [2020-11-07 06:26:18,739 WARN L194 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 252 DAG size of output: 63 [2020-11-07 06:26:23,433 WARN L194 SmtUtils]: Spent 4.68 s on a formula simplification. DAG size of input: 586 DAG size of output: 69 [2020-11-07 06:26:28,159 WARN L194 SmtUtils]: Spent 4.71 s on a formula simplification. DAG size of input: 586 DAG size of output: 69 [2020-11-07 06:26:29,992 WARN L194 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 300 DAG size of output: 60 [2020-11-07 06:26:31,417 WARN L194 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 254 DAG size of output: 59 [2020-11-07 06:26:36,716 WARN L194 SmtUtils]: Spent 5.28 s on a formula simplification. DAG size of input: 621 DAG size of output: 71 [2020-11-07 06:26:38,308 WARN L194 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 291 DAG size of output: 57 [2020-11-07 06:26:42,814 WARN L194 SmtUtils]: Spent 4.49 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:26:44,597 WARN L194 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 294 DAG size of output: 57 [2020-11-07 06:26:49,128 WARN L194 SmtUtils]: Spent 4.51 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:26:50,800 WARN L194 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 290 DAG size of output: 55 [2020-11-07 06:26:52,446 WARN L194 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 257 DAG size of output: 57 [2020-11-07 06:26:54,746 WARN L194 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 304 DAG size of output: 62 [2020-11-07 06:26:56,167 WARN L194 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 255 DAG size of output: 57 [2020-11-07 06:26:57,479 WARN L194 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 258 DAG size of output: 57 [2020-11-07 06:26:58,963 WARN L194 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 257 DAG size of output: 62 [2020-11-07 06:27:00,458 WARN L194 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 257 DAG size of output: 54 [2020-11-07 06:27:01,783 WARN L194 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 256 DAG size of output: 61 [2020-11-07 06:27:03,045 WARN L194 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 251 DAG size of output: 55 [2020-11-07 06:27:04,537 WARN L194 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 255 DAG size of output: 60 [2020-11-07 06:27:06,144 WARN L194 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 255 DAG size of output: 61 [2020-11-07 06:27:07,649 WARN L194 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 255 DAG size of output: 55 [2020-11-07 06:27:08,884 WARN L194 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 261 DAG size of output: 53 [2020-11-07 06:27:10,033 WARN L194 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:27:11,179 WARN L194 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:27:13,101 WARN L194 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 312 DAG size of output: 63 [2020-11-07 06:27:14,972 WARN L194 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 309 DAG size of output: 58 [2020-11-07 06:27:19,791 WARN L194 SmtUtils]: Spent 4.80 s on a formula simplification. DAG size of input: 586 DAG size of output: 69 [2020-11-07 06:27:21,581 WARN L194 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 259 DAG size of output: 67 [2020-11-07 06:27:23,443 WARN L194 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 254 DAG size of output: 59 [2020-11-07 06:27:25,145 WARN L194 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 266 DAG size of output: 60 [2020-11-07 06:27:26,708 WARN L194 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 293 DAG size of output: 58 [2020-11-07 06:27:28,430 WARN L194 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 262 DAG size of output: 63 [2020-11-07 06:27:30,284 WARN L194 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 293 DAG size of output: 58 [2020-11-07 06:27:31,884 WARN L194 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 269 DAG size of output: 58 [2020-11-07 06:27:36,538 WARN L194 SmtUtils]: Spent 4.64 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:27:41,213 WARN L194 SmtUtils]: Spent 4.66 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:27:43,042 WARN L194 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 281 DAG size of output: 47 [2020-11-07 06:27:47,727 WARN L194 SmtUtils]: Spent 4.67 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:27:49,178 WARN L194 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 268 DAG size of output: 60 [2020-11-07 06:27:50,366 WARN L194 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:27:53,728 WARN L194 SmtUtils]: Spent 3.35 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:27:57,459 WARN L194 SmtUtils]: Spent 3.71 s on a formula simplification. DAG size of input: 498 DAG size of output: 59 [2020-11-07 06:27:59,004 WARN L194 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 277 DAG size of output: 51 [2020-11-07 06:28:03,933 WARN L194 SmtUtils]: Spent 4.91 s on a formula simplification. DAG size of input: 586 DAG size of output: 69 [2020-11-07 06:28:08,895 WARN L194 SmtUtils]: Spent 4.95 s on a formula simplification. DAG size of input: 586 DAG size of output: 69 [2020-11-07 06:28:10,972 WARN L194 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 289 DAG size of output: 59 [2020-11-07 06:28:12,493 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 259 DAG size of output: 63 [2020-11-07 06:28:14,576 WARN L194 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 267 DAG size of output: 63 [2020-11-07 06:28:16,205 WARN L194 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 255 DAG size of output: 61 [2020-11-07 06:28:17,607 WARN L194 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 263 DAG size of output: 60 [2020-11-07 06:28:19,121 WARN L194 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 299 DAG size of output: 66 [2020-11-07 06:28:20,294 WARN L194 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:28:23,687 WARN L194 SmtUtils]: Spent 3.38 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:28:27,006 WARN L194 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 468 DAG size of output: 54 [2020-11-07 06:28:30,392 WARN L194 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:28:31,789 WARN L194 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 276 DAG size of output: 55 [2020-11-07 06:28:32,984 WARN L194 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:28:34,164 WARN L194 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:28:37,568 WARN L194 SmtUtils]: Spent 3.39 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:28:39,561 WARN L194 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 312 DAG size of output: 63 [2020-11-07 06:28:44,354 WARN L194 SmtUtils]: Spent 4.78 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:28:45,690 WARN L194 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 261 DAG size of output: 57 [2020-11-07 06:28:47,344 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 266 DAG size of output: 54 [2020-11-07 06:28:52,140 WARN L194 SmtUtils]: Spent 4.78 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:28:56,966 WARN L194 SmtUtils]: Spent 4.81 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:28:58,864 WARN L194 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 281 DAG size of output: 47 [2020-11-07 06:29:00,443 WARN L194 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 258 DAG size of output: 63 [2020-11-07 06:29:02,090 WARN L194 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 260 DAG size of output: 57 [2020-11-07 06:29:03,795 WARN L194 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 298 DAG size of output: 65 [2020-11-07 06:29:08,682 WARN L194 SmtUtils]: Spent 4.87 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:29:09,967 WARN L194 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 262 DAG size of output: 53 [2020-11-07 06:29:11,553 WARN L194 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 252 DAG size of output: 59 [2020-11-07 06:29:13,100 WARN L194 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 261 DAG size of output: 59 [2020-11-07 06:29:18,013 WARN L194 SmtUtils]: Spent 4.90 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:29:22,937 WARN L194 SmtUtils]: Spent 4.91 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:29:24,753 WARN L194 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 258 DAG size of output: 63 [2020-11-07 06:29:29,682 WARN L194 SmtUtils]: Spent 4.91 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:29:34,621 WARN L194 SmtUtils]: Spent 4.92 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:29:36,064 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 266 DAG size of output: 61 [2020-11-07 06:29:38,305 WARN L194 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 259 DAG size of output: 72 [2020-11-07 06:29:39,715 WARN L194 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 260 DAG size of output: 59 [2020-11-07 06:29:41,521 WARN L194 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 292 DAG size of output: 57 [2020-11-07 06:29:43,519 WARN L194 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 296 DAG size of output: 66 [2020-11-07 06:29:44,933 WARN L194 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 254 DAG size of output: 51 [2020-11-07 06:29:46,532 WARN L194 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 255 DAG size of output: 61 [2020-11-07 06:29:51,669 WARN L194 SmtUtils]: Spent 5.12 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:29:53,768 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 309 DAG size of output: 58 [2020-11-07 06:29:55,207 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 259 DAG size of output: 63 [2020-11-07 06:30:00,417 WARN L194 SmtUtils]: Spent 5.20 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:30:05,269 WARN L194 SmtUtils]: Spent 4.84 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:30:06,532 WARN L194 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 261 DAG size of output: 53 [2020-11-07 06:30:11,679 WARN L194 SmtUtils]: Spent 5.13 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:30:13,519 WARN L194 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 301 DAG size of output: 64 [2020-11-07 06:30:15,017 WARN L194 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 250 DAG size of output: 48 [2020-11-07 06:30:20,244 WARN L194 SmtUtils]: Spent 5.21 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:30:21,931 WARN L194 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 262 DAG size of output: 66 [2020-11-07 06:30:23,577 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 300 DAG size of output: 55 [2020-11-07 06:30:25,772 WARN L194 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 312 DAG size of output: 63 [2020-11-07 06:30:27,839 WARN L194 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 281 DAG size of output: 47 [2020-11-07 06:30:29,891 WARN L194 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 281 DAG size of output: 47 [2020-11-07 06:30:31,932 WARN L194 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 281 DAG size of output: 47 [2020-11-07 06:30:33,204 WARN L194 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:30:34,407 WARN L194 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:30:37,930 WARN L194 SmtUtils]: Spent 3.51 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:30:39,250 WARN L194 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:30:42,973 WARN L194 SmtUtils]: Spent 3.71 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:30:44,754 WARN L194 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 300 DAG size of output: 65 [2020-11-07 06:30:46,533 WARN L194 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 256 DAG size of output: 63 [2020-11-07 06:30:48,816 WARN L194 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 287 DAG size of output: 61 [2020-11-07 06:30:51,128 WARN L194 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 295 DAG size of output: 59 [2020-11-07 06:30:56,608 WARN L194 SmtUtils]: Spent 5.46 s on a formula simplification. DAG size of input: 586 DAG size of output: 69 [2020-11-07 06:31:02,117 WARN L194 SmtUtils]: Spent 5.49 s on a formula simplification. DAG size of input: 586 DAG size of output: 69 [2020-11-07 06:31:04,194 WARN L194 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 291 DAG size of output: 61 [2020-11-07 06:31:07,883 WARN L194 SmtUtils]: Spent 3.67 s on a formula simplification. DAG size of input: 468 DAG size of output: 54 [2020-11-07 06:31:09,135 WARN L194 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:31:12,964 WARN L194 SmtUtils]: Spent 3.81 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:31:16,697 WARN L194 SmtUtils]: Spent 3.72 s on a formula simplification. DAG size of input: 467 DAG size of output: 57 [2020-11-07 06:31:20,514 WARN L194 SmtUtils]: Spent 3.80 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:31:21,800 WARN L194 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:31:25,658 WARN L194 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:31:26,984 WARN L194 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:31:28,282 WARN L194 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:31:29,620 WARN L194 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-11-07 06:31:33,452 WARN L194 SmtUtils]: Spent 3.82 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:31:35,001 WARN L194 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 276 DAG size of output: 55 [2020-11-07 06:31:39,259 WARN L194 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 498 DAG size of output: 59 [2020-11-07 06:31:41,965 WARN L194 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 304 DAG size of output: 62 [2020-11-07 06:31:43,791 WARN L194 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 253 DAG size of output: 63 [2020-11-07 06:31:45,361 WARN L194 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 276 DAG size of output: 55 [2020-11-07 06:31:49,099 WARN L194 SmtUtils]: Spent 3.72 s on a formula simplification. DAG size of input: 468 DAG size of output: 54 [2020-11-07 06:31:50,693 WARN L194 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 276 DAG size of output: 55 [2020-11-07 06:31:54,491 WARN L194 SmtUtils]: Spent 3.78 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:31:58,349 WARN L194 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-11-07 06:32:03,745 WARN L194 SmtUtils]: Spent 5.38 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:32:05,841 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 281 DAG size of output: 47 [2020-11-07 06:32:11,318 WARN L194 SmtUtils]: Spent 5.46 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:32:12,898 WARN L194 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 253 DAG size of output: 60 [2020-11-07 06:32:15,136 WARN L194 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 312 DAG size of output: 63 [2020-11-07 06:32:16,712 WARN L194 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 268 DAG size of output: 57 [2020-11-07 06:32:22,196 WARN L194 SmtUtils]: Spent 5.47 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:32:27,725 WARN L194 SmtUtils]: Spent 5.51 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:32:33,209 WARN L194 SmtUtils]: Spent 5.47 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-11-07 06:32:35,114 WARN L194 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 260 DAG size of output: 73 [2020-11-07 06:32:36,826 WARN L194 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 259 DAG size of output: 63 [2020-11-07 06:32:38,594 WARN L194 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 256 DAG size of output: 61 [2020-11-07 06:32:40,253 WARN L194 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 256 DAG size of output: 58 [2020-11-07 06:32:42,300 WARN L194 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 292 DAG size of output: 55